{"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","url":"https:\/\/www.hifiboutique.us\/products\/nuprime-pra-9x-balanced-preamplifier","provider":"HiFi Boutique","version":"1.0","type":"link"}