{"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\/products\/nuprime-amg-hpa-headphone-amplifier","provider":"HiFi Boutique","version":"1.0","type":"link"}