{"title":"Headphone Amplifiers","description":"\u003cp\u003eA dedicated headphone amplifier provides the voltage and current that demanding headphones need, with lower noise than the headphone jack on most equipment. Many models also include a DAC, so they can play straight from a computer or streamer. This collection includes tube and solid-state headphone amplifiers and DAC\/amp combinations from \u003ca href=\"\/collections\/unison-research\"\u003eUnison Research\u003c\/a\u003e and \u003ca href=\"\/collections\/nuprime\"\u003eNuPrime\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eDo I need a headphone amplifier?\u003c\/h3\u003e\n\u003cp\u003eHigh-impedance or low-sensitivity headphones benefit most. Sensitive headphones can still gain from a quieter, more capable amplifier.\u003c\/p\u003e\n\u003ch3\u003eWhat is a DAC\/headphone amp combo?\u003c\/h3\u003e\n\u003cp\u003eIt combines a DAC and a headphone amplifier in one unit, so you can connect a computer or digital source directly.\u003c\/p\u003e\n\u003ch3\u003eCan a headphone amp also work as a preamp?\u003c\/h3\u003e\n\u003cp\u003eSome models have line outputs with volume control, so they can feed a power amplifier or active speakers.\u003c\/p\u003e\n","products":[{"product_id":"unison-research-sh","title":"Unison Research SH","description":"\u003cp\u003eUnison Research's tradition of Single Ended is well known in markets around the world and has been used to make a component aimed solely at quality. SH is a Single Ended Class A headphone amplifier, made with a two-stage tube circuit and preceded by a passive volume control. The refinement of the tubes is combined with modernity through the internal Dac and the USB input, making the SH the ideal instrument for listening to liquid music with headphones.\u003c\/p\u003e\n\u003cp\u003eAsynchronous USB interface compatible with USB 2.0 Audio Class\u003cbr\u003e Accepts PCM up to 384kHz and DSD up to 128\u003cbr\u003e Resolution up to 32 bit\u003cbr\u003e Latest generation ESS Saber DAC (ESS ES9010K2M) with jitter elimination circuit\u003cbr\u003e Galvanic isolation between USB interface and\u003cbr\u003e Clock conversion circuit low phase noise residing in the \"clean\" power supply area to preserve the performance guaranteed by the low jitter\u003cbr\u003e 110dB SNR (at 1kHz, \"A\" weighted, 192kHZ)\u003cbr\u003e 0.008% THD + N (at 1kHz, -3dBFS)\u003c\/p\u003e\n\u003cp\u003eSpecifications\u003c\/p\u003e\n\u003cp\u003eMaximum output voltage (THD 1%):\u003cbr\u003e \"High sensitivity\" output\u003cbr\u003e 0.5 V into 150 ohm, 0.45 V into 33 ohm, 0.4 V into 10 ohm\u003cbr\u003e \"Low sensitivity\" output\u003cbr\u003e 1.4 V into 150 ohm, 1.1 V into 33 ohm, 0.6 V into 10 ohms\u003c\/p\u003e\n\u003cp\u003eFrequency response:\u003cbr\u003e -0.1 dB @ 10Hz \/ 3-dB @ 50 kHz (\"Low sensitivity\" output into 33 ohms)\u003c\/p\u003e\n\u003cp\u003eInput impedance: 20k ohm \/\/ 100 pF\u003c\/p\u003e\n\u003cp\u003eSensitivity:\u003cbr\u003e 0.67 V input for 0.33 V output (\"High sensitivity\" output, 10 ohm)\u003cbr\u003e      0.67 V input for 1 V output (\"Low sensitivity\" output, 33 ohm)\u003c\/p\u003e\n\u003cp\u003eInput stage:\u003cbr\u003e Pure Class A, ECC83 \/ 12AX7\u003c\/p\u003e\n\u003cp\u003eOutput stage:\u003cbr\u003e Class A, 2 EL84 connected to triode\u003c\/p\u003e\n\u003cp\u003eInputs: 1 RCA line, 1 USB\u003c\/p\u003e\n\u003cp\u003eOutputs: 2 in parallel\u003c\/p\u003e\n\u003cp\u003eFeedback factor: 16 dB\u003c\/p\u003e\n\u003cp\u003eOutput Impedance: 6.9ohm.\u003c\/p\u003e\n\u003cp\u003eDamping factor: 3 to 20 ohms\u003c\/p\u003e\n\u003cp\u003eTHD: \u0026lt;0.2% @ 1kHz, 0.5V, \u0026lt;0.8% up to 1 V (\"Low sens.\" Output on 33 ohm)\u003c\/p\u003e\n\u003cp\u003eAbsorption: 45 W\u003c\/p\u003e\n\u003cp\u003eDimensions: 22.5cm x 12.6cm x 32.2cm\u003c\/p\u003e\n\u003cp\u003eWeight: 6 kg\u003c\/p\u003e","brand":"Unison Research","offers":[{"title":"Cherry","offer_id":41659687469253,"sku":"SH Cherry","price":1399.0,"currency_code":"USD","in_stock":false},{"title":"Black (Special Order)","offer_id":41659687502021,"sku":"SH Black","price":1399.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0607\/3643\/8469\/products\/SH_Cherryfront2.jpg?v=1661440521"},{"product_id":"nuprime-dac-10h-dac-headphone-amp","title":"NuPrime DAC-10H DAC \/ Headphone Amp","description":"\u003cp\u003eHiFi Boutique is a proud dealer for NuPrime.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDAC-10H DAC \/ Headphone Amp\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe NuPrime DAC-10H combines leading-edge technology that offers PCM 384K \u0026amp; DSD256 decoding with a high-power balanced headphone amplifier. To excel beyond high performance DACs cluttering the marketplace, NuPrime recognizes that merely supporting standard sampling rates and hi-res music formats using state-of-the-art chips or proprietary digital signal processing is not sufficient. To satisfy the most discerning audiophiles, the NuPrime DAC-10H must do three things exceptionally well: 1) drive any headphones with ease; 2) deliver the utmost detail during a symphony’s quietest passages or a soundtrack’s heart-pounding explosion; and 3) all of this in the most natural sound. Simply put, the DAC-10H is a truly musical device.\u003c\/p\u003e\n\u003cp\u003eNuPrime DAC-10H:\u003cbr\u003eReference DAC \/ Preamp \/ Headphone Amp • Sabre32 ES9018 • PCM384k \/ DSD256 • Balanced \u0026amp; Unbalanced Outputs\u003c\/p\u003e\n\u003cp\u003eHighlights:\u003cbr\u003eReference-grade DAC: Sabre32 ES9018 chip\u003cbr\u003eHeadphone amp: Balanced XLR-4 + 6.3mm outputs\u003cbr\u003ePreamp: Thin-film resistor ladder volume control\u003cbr\u003eDynamic range up to 135dB, THD+N down to –120dB\u003cbr\u003eMultiple digital \u0026amp; analog inputs\/outputs (RCA, XLR, USB, Optical, Coax)\u003cbr\u003e\u003c\/p\u003e","brand":"NuPrime","offers":[{"title":"Default Title","offer_id":45075235995845,"sku":"Nuprime_dac10h","price":1250.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0607\/3643\/8469\/files\/dac-10h-black-side_1_jpg.jpg?v=1757180970"},{"product_id":"nuprime-dac-9x-dac-preamp-headphone-amp","title":"NuPrime DAC-9X DAC, Preamp \u0026 Headphone Amplifier","description":"\u003cp\u003e\u003cstrong\u003eThe NuPrime DAC-9X is a reference-class DAC, preamplifier and headphone amplifier with dual ESS9028Q2M converters, decoding PCM up to 384kHz, DSD256 and MQA.\u003c\/strong\u003e It has six digital inputs, including two I2S\/DSD inputs, plus one analog input, balanced XLR and RCA outputs, and a 6.3mm headphone output rated at 1700mW into 32 ohms. At HiFi Boutique it ships free anywhere in the USA, with sales tax already included.\u003c\/p\u003e\n\n\u003ch2\u003eNuPrime DAC-9X at a Glance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDAC:\u003c\/strong\u003e dual ESS Technology ES9028Q2M 32-bit DACs, one per channel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFormats:\u003c\/strong\u003e PCM to 384kHz, DSD256, MQA decoding\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDigital inputs:\u003c\/strong\u003e USB, 2 x I2S\/DSD, optical, coaxial, and an extension port for an optional wireless receiver\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnalog input:\u003c\/strong\u003e 1 x stereo RCA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutputs:\u003c\/strong\u003e XLR balanced (8Vrms), RCA (4Vrms), optical, and a front 6.3mm headphone output\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeadphone power:\u003c\/strong\u003e 1700mW @ 32Ω, 135mW @ 600Ω\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePerformance:\u003c\/strong\u003e THD+N below 0.0005%, SNR above 110dB\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVolume:\u003c\/strong\u003e digitally controlled dual-mono analog shunt-to-ground volume, adjustable for each input\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e black or silver\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose the DAC-9X\u003c\/h2\u003e\n\u003cp\u003eThe DAC-9X can be the centre of a system. Two ESS9028Q2M converters decode the left and right channels independently for better channel separation and lower noise. Vishay professional MELF film resistors sit in the signal path, and the power supply has anti-vibration treatment to keep hum low.\u003c\/p\u003e\n\u003cp\u003eIts preamp section uses a digitally controlled, dual-mono analog shunt-to-ground volume control, so it can drive a power amplifier directly with no extra preamp and fewer cables. Volume can be set for each input to match source levels.\u003c\/p\u003e\n\n\n\u003ch3\u003eMQA Decoding\u003c\/h3\u003e\n\u003cp\u003eThe DAC-9X decodes MQA files and streams. A front LED glows green or blue to show MQA decoding, with blue for MQA Studio, and magenta when it renders an MQA stream.\u003c\/p\u003e\n\n\u003ch3\u003eInputs and Outputs\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eUSB Type B: up to 384kHz\/24-bit and native DSD256 on Windows; up to 384kHz\/24-bit and DoP DSD128 on Mac and Linux\u003c\/li\u003e\n  \u003cli\u003eI2S\/DSD x 2: PCM 44.1kHz to 384kHz\/32-bit, DSD64 to DSD256, for connection to other NuPrime products\u003c\/li\u003e\n  \u003cli\u003eCoaxial: PCM to 384kHz\/24-bit, DoP 64 and 128\u003c\/li\u003e\n  \u003cli\u003eOptical: PCM to 192kHz\/24-bit, DoP 64\u003c\/li\u003e\n  \u003cli\u003eExtension port (USB Type A): S\/PDIF data and 5V power for a NuPrime BTR-HD or LP10 NuPrime Edition, PCM to 192kHz\/24-bit\u003c\/li\u003e\n  \u003cli\u003eRCA analog input: up to 1Vrms\u003c\/li\u003e\n  \u003cli\u003eXLR and RCA outputs, optical output, and front-panel 6.3mm headphone output\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For and System Pairing\u003c\/h2\u003e\n\u003cp\u003eThe DAC-9X suits a listener who wants one box to handle digital sources, volume and headphones. Run its XLR outputs straight into a power amplifier such as the \u003ca href=\"\/products\/nuprime-sta-9x-stereo-power-amplifier\" title=\"NuPrime STA-9X\"\u003eNuPrime STA-9X\u003c\/a\u003e for a two-box system, and add the \u003ca href=\"\/products\/nuprime-stream-9x-network-streamer\" title=\"NuPrime Stream 9X\"\u003eNuPrime Stream 9X\u003c\/a\u003e through I2S for network streaming. Browse the full \u003ca href=\"\/collections\/nuprime\" title=\"NuPrime collection at HiFi Boutique\"\u003eNuPrime collection\u003c\/a\u003e to build out your system.\u003c\/p\u003e\n\n\u003ch2\u003eDAC-9X Specifications\u003c\/h2\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth style=\"text-align:left; padding:8px; border:1px solid #ddd;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"text-align:left; padding:8px; border:1px solid #ddd;\"\u003eDAC-9X\u003c\/th\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eDAC-9X\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eDAC, preamplifier and headphone amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eDAC Chips\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eDual ESS ES9028Q2M\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eUSB Input\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eType B 2.0 Hi-Speed; Windows: 384kHz\/24-bit, native DSD256; Mac\/Linux: 384kHz\/24-bit, DoP DSD128\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eI2S\/DSD Inputs\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e2 x; PCM 44.1–384kHz\/32-bit, DSD64–DSD256\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eCoaxial Input\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003ePCM 44.1–384kHz\/24-bit, DoP 64 and 128\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eOptical Input\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003ePCM 44.1–192kHz\/24-bit, DoP 64\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eExtension Input\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003ePCM 44.1–192kHz\/24-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eAnalog Input\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eRCA, up to 1Vrms\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eHeadphone Output\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e6.3mm TRS; 1700mW @ 32Ω (\u0026lt;0.01% THD), 135mW @ 600Ω (\u0026lt;0.005% THD)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eLine Outputs\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eRCA 4Vrms; XLR 8Vrms\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eDigital Output\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eOptical, PCM to 192kHz, DoP DSD64\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eFrequency Response\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e20Hz – 20kHz, ±0.3dB\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eSNR\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u0026gt;110dB\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eTHD+N\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u0026lt;0.0005%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eAC Voltage\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e90–130VAC or 210–250VAC, voltage select switch\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eFuse\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eSlow-blow, 2.5A, 250V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eFinish\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eBlack or silver\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eDimensions (H x W x D)\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e55 x 235 x 281 mm (2.2 x 9.3 x 11.1 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eNet Weight\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e3 kg (6.6 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eShipping Weight\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e4 kg (8.8 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eNuPrime DAC-9X FAQ\u003c\/h2\u003e\n\u003ch3\u003eWhich DAC chip does the DAC-9X use?\u003c\/h3\u003e\n\u003cp\u003eTwo ESS ES9028Q2M 32-bit DACs, one for each channel.\u003c\/p\u003e\n\n\u003ch3\u003eCan the DAC-9X be used as a preamplifier?\u003c\/h3\u003e\n\u003cp\u003eYes. Its analog shunt-to-ground volume control and 8Vrms XLR output let it drive a power amplifier directly.\u003c\/p\u003e\n\n\u003ch3\u003eDoes the DAC-9X decode MQA?\u003c\/h3\u003e\n\u003cp\u003eYes. It decodes and renders MQA files and streams, with a front LED that shows MQA status.\u003c\/p\u003e\n\n\u003ch3\u003eHow powerful is the headphone output?\u003c\/h3\u003e\n\u003cp\u003eThe 6.3mm output delivers 1700mW into 32 ohms and 135mW into 600 ohms.\u003c\/p\u003e\n\n\u003ch3\u003eWill the I2S inputs work with any source?\u003c\/h3\u003e\n\u003cp\u003eNuPrime designs its I2S connections for use with other NuPrime products, such as the Stream 9X, and notes that they may not work with other devices.\u003c\/p\u003e\n\n\u003ch3\u003eCan I add wireless streaming?\u003c\/h3\u003e\n\u003cp\u003eYes. The extension port connects an optional NuPrime BTR-HD Bluetooth receiver or LP10 NuPrime Edition streamer with one USB cable.\u003c\/p\u003e\n\n\u003ch3\u003eHow big and heavy is the DAC-9X?\u003c\/h3\u003e\n\u003cp\u003eIt measures 55 x 235 x 281 mm (H x W x D) and weighs 3 kg.\u003c\/p\u003e\n\n\u003ch3\u003eWhat warranty does the NuPrime DAC-9X have?\u003c\/h3\u003e\n\u003cp\u003eNuPrime lists a 1-year manufacturer warranty for the DAC-9X.\u003c\/p\u003e\n\n\u003ch3\u003eDoes HiFi Boutique charge shipping or sales tax on the DAC-9X?\u003c\/h3\u003e\n\u003cp\u003eNo. The DAC-9X ships free anywhere in the USA, and sales tax is already included, so the price you see is what you pay.\u003c\/p\u003e\n\n\n\u003ch2\u003eShipping and Pricing at HiFi Boutique\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eFree shipping anywhere in the USA, with sales tax included in the price.\u003c\/strong\u003e No extra fees at checkout.\u003c\/p\u003e","brand":"NuPrime","offers":[{"title":"Black","offer_id":50852193468613,"sku":"NP-DAC-9X-BLK","price":1199.0,"currency_code":"USD","in_stock":false},{"title":"Silver","offer_id":50852193501381,"sku":"NP-DAC-9X-SVR","price":1199.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0607\/3643\/8469\/files\/DAC-9X_4.jpg?v=1793472164"},{"product_id":"nuprime-pra-9x-balanced-preamplifier","title":"NuPrime PRA-9X Balanced Preamplifier with MM Phono \u0026 Headphone Output","description":"\u003cp\u003e\u003cstrong\u003eThe NuPrime PRA-9X is a fully balanced analog preamplifier with a THD+N of 0.0004%, a built-in MM phono stage, and a 6.3mm headphone output.\u003c\/strong\u003e It has one phono, two RCA and one XLR input, XLR and RCA outputs, and a digitally controlled analog volume in 0.5dB steps. At HiFi Boutique it ships free anywhere in the USA, with sales tax already included.\u003c\/p\u003e\n\n\u003ch2\u003eNuPrime PRA-9X at a Glance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e fully balanced, with audio relay input and output switching\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLine stage:\u003c\/strong\u003e four NuPrime ultra-low distortion amplifier modules with MUSES8820 op-amps, THD+N 0.0004% @ 7.5Vrms\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSNR:\u003c\/strong\u003e above 115dB @ 7.5Vrms\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePhono stage:\u003c\/strong\u003e MM, two-stage RIAA with MUSES8820, 32k\/47k\/100k ohm and 100\/220\/320pF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInputs:\u003c\/strong\u003e 1 x MM phono, 2 x stereo RCA, 1 x stereo XLR\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutputs:\u003c\/strong\u003e 1 x stereo XLR, 1 x stereo RCA, 1 x 6.3mm headphone\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeadphone power:\u003c\/strong\u003e 560mW @ 32Ω, 110mW @ 600Ω\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVolume:\u003c\/strong\u003e 0.5dB steps with memory, using analog switches and precision chip resistors\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e black or silver\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose the PRA-9X\u003c\/h2\u003e\n\u003cp\u003eThe PRA-9X is a fully balanced preamplifier for an analog system or a system with separate DAC and power amplifiers. The line outputs use four of NuPrime's ultra-low distortion amplifier modules, built around MUSES8820 op-amps, for THD+N of 0.0004%. Inputs and outputs switch through audio relays.\u003c\/p\u003e\n\u003cp\u003eIts volume control is digitally controlled but analog in operation. Each 0.5dB step engages a dedicated analog switch and precision chip resistors, rather than attenuating the signal digitally.\u003c\/p\u003e\n\n\n\u003ch3\u003ePhono Stage\u003c\/h3\u003e\n\u003cp\u003eThe phono input is a two-stage RIAA amplifier using NJR MUSES8820 op-amps. Input resistance can be set to 32k, 47k or 100k ohms, and capacitance to 100, 220 or 320pF, to match moving magnet cartridges. Gain from the MM input to the line output is 50dB at 1kHz.\u003c\/p\u003e\n\n\u003ch3\u003eHeadphone Output\u003c\/h3\u003e\n\u003cp\u003eThe front 6.3mm output delivers 560mW into 32 ohms and 110mW into 600 ohms, with THD+N of 0.004% and 0.0015% respectively.\u003c\/p\u003e\n\n\u003ch2\u003eWho It's For and System Pairing\u003c\/h2\u003e\n\u003cp\u003eThe PRA-9X is for listeners building a separates system around a turntable or analog sources. Pair it with the \u003ca href=\"\/products\/nuprime-sta-9x-stereo-power-amplifier\" title=\"NuPrime STA-9X\"\u003eNuPrime STA-9X\u003c\/a\u003e power amplifier over balanced XLR, and feed it a DAC such as the \u003ca href=\"\/products\/nuprime-dac-9x-dac-preamp-headphone-amp\" title=\"NuPrime DAC-9X\"\u003eNuPrime DAC-9X\u003c\/a\u003e for digital sources. Browse the full \u003ca href=\"\/collections\/nuprime\" title=\"NuPrime collection at HiFi Boutique\"\u003eNuPrime collection\u003c\/a\u003e to build out your system.\u003c\/p\u003e\n\n\u003ch2\u003ePRA-9X Specifications\u003c\/h2\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth style=\"text-align:left; padding:8px; border:1px solid #ddd;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"text-align:left; padding:8px; border:1px solid #ddd;\"\u003ePRA-9X\u003c\/th\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003ePRA-9X\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eBalanced preamplifier with MM phono and headphone output\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eInputs\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e1 x MM phono; 2 x stereo RCA; 1 x stereo XLR\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eOutputs\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e1 x stereo RCA; 1 x stereo XLR; 1 x 6.3mm headphone\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003ePhono Loading\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e32kΩ \/ 47kΩ \/ 100kΩ; 100pF \/ 220pF \/ 320pF\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eMM Input Sensitivity\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e4.0mV @ 1kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003ePhono Gain\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e50dB @ 1kHz (MM in to line out, max volume)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eLine Input Resistance\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e20kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eOutput Resistance\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e10Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eTHD+N (Line)\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e0.0004% @ 7.5Vrms\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eS\/N Ratio (Line)\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u0026gt;115dB @ 7.5Vrms\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eFrequency Response\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e0Hz – 50kHz (0.2dB), 200kHz (-3dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eLine Gain\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e17dB @ 1kHz (max volume)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eHeadphone Output\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e560mW @ 32Ω; 110mW @ 600Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eHeadphone THD+N\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e0.004% @ 32Ω \/ 480mW; 0.0015% @ 600Ω \/ 100mW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eDynamic Range\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u0026gt;115dB\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eAC Voltage\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e90–130VAC or 210–250VAC, voltage select switch\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eFuse\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eSlow-blow, T1A, 250VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eFinish\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eBlack or silver\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eDimensions (H x W x D)\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e55 x 235 x 281 mm (2.2 x 9.3 x 11.1 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eNet Weight\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e3 kg (6.6 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eShipping Weight\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e4 kg (8.8 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eNuPrime PRA-9X FAQ\u003c\/h2\u003e\n\u003ch3\u003eIs the PRA-9X fully balanced?\u003c\/h3\u003e\n\u003cp\u003eYes. NuPrime describes it as a fully balanced preamplifier, with XLR input and output as well as RCA.\u003c\/p\u003e\n\n\u003ch3\u003eDoes the PRA-9X have a phono stage?\u003c\/h3\u003e\n\u003cp\u003eYes, for moving magnet cartridges, with selectable 32k, 47k or 100k ohm loading and 100, 220 or 320pF capacitance.\u003c\/p\u003e\n\n\u003ch3\u003eDoes the PRA-9X have a DAC?\u003c\/h3\u003e\n\u003cp\u003eNo. It is an analog preamplifier. Connect a DAC to its RCA or XLR inputs for digital sources.\u003c\/p\u003e\n\n\u003ch3\u003eHow powerful is the headphone output?\u003c\/h3\u003e\n\u003cp\u003eIt delivers 560mW into 32 ohms and 110mW into 600 ohms.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the volume control work?\u003c\/h3\u003e\n\u003cp\u003eIt is digitally controlled in 0.5dB steps with memory, but each step switches precision resistors through analog switches.\u003c\/p\u003e\n\n\u003ch3\u003eWhat warranty does the NuPrime PRA-9X have?\u003c\/h3\u003e\n\u003cp\u003eNuPrime lists a 1-year manufacturer warranty for the PRA-9X.\u003c\/p\u003e\n\n\u003ch3\u003eDoes HiFi Boutique charge shipping or sales tax on the PRA-9X?\u003c\/h3\u003e\n\u003cp\u003eNo. The PRA-9X ships free anywhere in the USA, and sales tax is already included, so the price you see is what you pay.\u003c\/p\u003e\n\n\n\u003ch2\u003eShipping and Pricing at HiFi Boutique\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eFree shipping anywhere in the USA, with sales tax included in the price.\u003c\/strong\u003e No extra fees at checkout.\u003c\/p\u003e","brand":"NuPrime","offers":[{"title":"Black","offer_id":50852193697989,"sku":"NP-PRA-9X-BLK","price":1199.0,"currency_code":"USD","in_stock":false},{"title":"Silver","offer_id":50852193730757,"sku":"NP-PRA-9X-SVR","price":1199.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0607\/3643\/8469\/files\/PRA-9_5-1200x628px.jpg?v=1793472167"},{"product_id":"nuprime-amg-hpa-headphone-amplifier","title":"NuPrime AMG HPA Balanced Headphone Amplifier \u0026 Preamp","description":"\u003cp\u003e\u003cstrong\u003eThe NuPrime AMG HPA is a fully balanced headphone amplifier with 1MΩ input impedance and a single-ended, non-negative-feedback Class A amplification module.\u003c\/strong\u003e NuPrime describes it as the first headphone amplifier with a 1MΩ input design, carried over from its flagship Evolution One amplifiers. It also works as a reference-level preamp through XLR and RCA outputs. At HiFi Boutique it ships free anywhere in the USA, with sales tax already included.\u003c\/p\u003e\n\n\u003ch2\u003eNuPrime AMG HPA at a Glance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInputs:\u003c\/strong\u003e 1 x balanced XLR, 3 x stereo RCA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeadphone outputs:\u003c\/strong\u003e 6.3mm, 4.4mm balanced, 4-pin XLR balanced\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePreamp outputs:\u003c\/strong\u003e 1 x XLR, 1 x RCA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e balanced: 3,500mW @ 32Ω, 300mW @ 600Ω; 6.3mm: 2,000mW @ 32Ω, 150mW @ 600Ω\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVolume:\u003c\/strong\u003e two MUSES72320, 100 balanced steps\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower supply:\u003c\/strong\u003e custom R-core transformer, 26,000µF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e grey\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose the AMG HPA\u003c\/h2\u003e\n\u003cp\u003eThe input stage uses an ultra-high-bandwidth, low-noise JFET for the 1MΩ input. Amplification is a single-ended, non-negative-feedback Class A module for wide bandwidth and rich second-order harmonics.\u003c\/p\u003e\n\u003cp\u003eInput, volume, amplification and output stages are independent for each side of the balanced signal. Two MUSES72320 chips give 100 balanced volume steps, which NuPrime calls the best volume control it has put into a product. The AMG front panel is milled from 15mm hardened aerospace aluminum alloy on a four-axis CNC machine with a diamond cutter, in a 48-step process, with a 3D floating logo and diamond-cut edges.\u003c\/p\u003e\n\n\n\u003ch2\u003eWho It's For and System Pairing\u003c\/h2\u003e\n\u003cp\u003eThe AMG HPA is for headphone listeners with demanding or sensitive headphones, from 8 ohms up to 600 ohms. Pair it with the \u003ca href=\"\/products\/nuprime-amg-dac-dac-preamp\" title=\"NuPrime AMG DAC\"\u003eNuPrime AMG DAC\u003c\/a\u003e as a source, and use its preamp outputs to feed a power amplifier such as the \u003ca href=\"\/products\/nuprime-amg-sta-se-stereo-amplifier\" title=\"NuPrime AMG STA-SE\"\u003eNuPrime AMG STA-SE\u003c\/a\u003e. Browse the full \u003ca href=\"\/collections\/nuprime\" title=\"NuPrime collection at HiFi Boutique\"\u003eNuPrime collection\u003c\/a\u003e to build out your system.\u003c\/p\u003e\n\n\u003ch2\u003eAMG HPA Specifications\u003c\/h2\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth style=\"text-align:left; padding:8px; border:1px solid #ddd;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"text-align:left; padding:8px; border:1px solid #ddd;\"\u003eAMG HPA\u003c\/th\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eAMG HPA\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eBalanced headphone amplifier and preamplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eInputs\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e1 x balanced XLR; 3 x stereo RCA\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eHeadphone Outputs\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e6.3mm; 4.4mm balanced; 4-pin XLR balanced\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eLine Outputs\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e1 x XLR; 1 x RCA\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eInput Impedance\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e1MΩ, 10Hz – 200kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eHeadphone Power (6.3mm)\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e2,000mW @ 32Ω; 150mW @ 600Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eHeadphone Power (balanced)\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e3,500mW @ 32Ω; 300mW @ 600Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eMinimum Headphone Impedance\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e8Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eDynamic Range\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u0026gt;80dB\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eTHD+N\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e0.05%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eS\/N\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u0026gt;100dB\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eFrequency Response\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e20Hz – 200kHz (-3dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eCrosstalk\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003emin. 80dB @ 1kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eAC Voltage\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e90–130VAC \/ 210–250VAC, voltage select switch\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eFinish\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eGrey\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eDimensions (H x W x D)\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e55 x 235 x 300 mm (2.2 x 9.3 x 11.8 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eNet Weight\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e2.5 kg (5.5 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eShipping Weight\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e5 kg (11 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eNuPrime AMG HPA FAQ\u003c\/h2\u003e\n\u003ch3\u003eWhich headphone outputs does the AMG HPA have?\u003c\/h3\u003e\n\u003cp\u003eA 6.3mm output, a 4.4mm balanced output and a 4-pin XLR balanced output.\u003c\/p\u003e\n\n\u003ch3\u003eHow much power does it deliver?\u003c\/h3\u003e\n\u003cp\u003eUp to 3,500mW into 32 ohms from the balanced outputs, and 300mW into 600 ohms. It drives headphones as low as 8 ohms.\u003c\/p\u003e\n\n\u003ch3\u003eCan the AMG HPA be used as a preamp?\u003c\/h3\u003e\n\u003cp\u003eYes. It has XLR and RCA line outputs and can be used as a reference-level preamp.\u003c\/p\u003e\n\n\u003ch3\u003eWhat inputs does it have?\u003c\/h3\u003e\n\u003cp\u003eOne balanced XLR input and three stereo RCA inputs.\u003c\/p\u003e\n\n\u003ch3\u003eWhat warranty does the NuPrime AMG HPA have?\u003c\/h3\u003e\n\u003cp\u003eNuPrime lists a 2-year manufacturer warranty for the AMG HPA.\u003c\/p\u003e\n\n\u003ch3\u003eDoes HiFi Boutique charge shipping or sales tax on the AMG HPA?\u003c\/h3\u003e\n\u003cp\u003eNo. The AMG HPA ships free anywhere in the USA, and sales tax is already included, so the price you see is what you pay.\u003c\/p\u003e\n\n\n\u003ch2\u003eShipping and Pricing at HiFi Boutique\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eFree shipping anywhere in the USA, with sales tax included in the price.\u003c\/strong\u003e No extra fees at checkout.\u003c\/p\u003e","brand":"NuPrime","offers":[{"title":"Default Title","offer_id":50852196221125,"sku":"NP-AMG-HPA","price":1999.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0607\/3643\/8469\/files\/AMG_HPA_left.jpg?v=1793472211"}],"url":"https:\/\/www.hifiboutique.us\/collections\/headphone-amplifiers.oembed","provider":"HiFi Boutique","version":"1.0","type":"link"}