{"product_id":"pra-9x","title":"NuPrime PRA-9X Preamp","description":"\u003cp\u003e\u003cspan\u003eThe NuPrime PRA-9X is a fully balanced preamplifier designed for ultra-low distortion (THD+N of 0.0004%) that includes a MM phono input and a 6.3mm headphone output. There are a variety of settings for matching different MM cartridges.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eNuPrime PRA-9X is a pre-amplifier with a fully balanced design and includes a MM phono input. The input and output use a special audio Relay Switch, which has the lowest interference and highly accurate transmission, to switch the source.\u003c\/p\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-13961\" src=\"https:\/\/nuprimeaudio.com\/\/wp-content\/uploads\/sites\/7\/PRA-9-relay.jpg\" alt=\"\" width=\"767\" height=\"400\" srcset=\"https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/PRA-9-relay.jpg 800w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/PRA-9-relay-510x266.jpg 510w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/PRA-9-relay-250x130.jpg 250w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/PRA-9-relay-767x400.jpg 767w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/PRA-9-relay-768x400.jpg 768w\" sizes=\"auto, (max-width: 767px) 100vw, 767px\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe phono input has a variety of settings for input resistors and capacitors to match different MM cartridges. PRA-9X phono amplifier is a 2-stage RIAA amplifier that utilises NJR MUSES8820 audio quality op-amp to provide an accurate RIAA curve and low distortion at high amplification and performance.\u003c\/p\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-13960\" src=\"https:\/\/nuprimeaudio.com\/\/wp-content\/uploads\/sites\/7\/PRA-9-MM-switch.jpg\" alt=\"\" width=\"448\" height=\"400\" srcset=\"https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/PRA-9-MM-switch.jpg 600w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/PRA-9-MM-switch-510x456.jpg 510w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/PRA-9-MM-switch-250x223.jpg 250w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/PRA-9-MM-switch-448x400.jpg 448w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/PRA-9-MM-switch-560x500.jpg 560w\" sizes=\"auto, (max-width: 448px) 100vw, 448px\"\u003e\u003c\/p\u003e\n\u003cp\u003eLine Outputs include four NuPrime’s new ultra-low distortion amplifier modules (THD=0.0004%) composed of MUSES8820 op-amp in a new amplifying circuit. It has excellent ultra-low distortion and high driving force characteristics.\u003c\/p\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-13959\" src=\"https:\/\/nuprimeaudio.com\/\/wp-content\/uploads\/sites\/7\/PRA-9-amp-modules.jpg\" alt=\"\" width=\"503\" height=\"400\" srcset=\"https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/PRA-9-amp-modules.jpg 600w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/PRA-9-amp-modules-510x405.jpg 510w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/PRA-9-amp-modules-250x199.jpg 250w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/PRA-9-amp-modules-503x400.jpg 503w\" sizes=\"auto, (max-width: 503px) 100vw, 503px\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch4\u003ePrecision Volume Control\u003c\/h4\u003e\n\u003cp\u003eThe PRA-9X features digitally controlled volume adjustment with fine 0.5dB steps and memory recall. It uses\u003cspan\u003e \u003c\/span\u003e\u003cem\u003ehigh-conductivity analog switches and integrates high-precision internal chip resistors\u003c\/em\u003e. Unlike conventional digital attenuation, each volume step activates a dedicated analog switch\u003cem\u003e,\u003c\/em\u003e\u003cspan\u003e \u003c\/span\u003eminimizing audio degradation and preserving sound quality.\u003c\/p\u003e\n\u003cp\u003eThis design delivers exceptional channel separation and ultra-low harmonic distortion, achieving outstanding performance with a signal-to-noise ratio (S\/N) of 114dB and total harmonic distortion (THD) of just 0.0004%. These characteristics ensure high-fidelity electronic volume control.\u003c\/p\u003e\n\u003cp\u003eThe system employs independent 4-channel volume control (L+\/L-, R+\/R-) for a true fully balanced architecture.\u003c\/p\u003e\n\u003cp\u003eAt this price point, a fully balanced high-end preamp like the PRA9X is a rare find, offering unmatched cost-performance (C\/P) value and exceptional overall performance.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLP vinyl RIAA phono amplifier circuit, with adjustable input capacitance and impedance.\u003c\/li\u003e\n\u003cli\u003eInput and output fully balanced preamp.\u003c\/li\u003e\n\u003cli\u003eUtilizing the MUSES8820 bipolar-input dual op-amp module, PRA-9X can reproduce the presence of an orchestra as experienced in a symphony concert and the breathing sound of a player in a live music house.\u003c\/li\u003e\n\u003cli\u003eNuPrime’s next generation current booster circuit, providing top 0.0004% (7.5Vrms) THD performance and 114dB signal-to-noise ratio (S\/N).\u003c\/li\u003e\n\u003cli\u003eHigh-performance headphone amp output.\u003c\/li\u003e\n\u003cli\u003eInput and output Trigger for power on\/off control of multiple devices.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eInputs:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Phono Stage\u003c\/li\u003e\n\u003cli\u003e2 x Analog Stereo RCA\u003c\/li\u003e\n\u003cli\u003e1 x Analog Stereo XLR\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOutputs:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 x 6.3mm headphones out\u003c\/li\u003e\n\u003cli\u003e1 x pair of stereo RCA out\u003c\/li\u003e\n\u003cli\u003e1 x pair of stereo XLR out\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePhono Stage:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInput resistance: 32K ohm \/ 47K ohm \/ 100K ohm\u003c\/li\u003e\n\u003cli\u003eInput capacitance: 100 pF \/ 220 pF \/ 320 pF\u003c\/li\u003e\n\u003cli\u003eMM Input Sensitivity: 4.0 mV @ 1KHz\u003c\/li\u003e\n\u003cli\u003eGAIN: MM input to LINE output (Vol.\/Max.) =\u0026gt; 50dB @ 1KHz\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePRE Stage:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInput resistance: 20K ohm\u003c\/li\u003e\n\u003cli\u003eOutput resistance: 10 ohm\u003c\/li\u003e\n\u003cli\u003eTHD+N: 0.0004% @ 7.5V Vrms\u003c\/li\u003e\n\u003cli\u003eS\/N ratio \u0026gt;115dB @ 7.5V Vrms\u003c\/li\u003e\n\u003cli\u003eFrequency Response: 0Hz to 50KHz (0.2dB), 200KHz (-3dB)\u003c\/li\u003e\n\u003cli\u003eGAIN: LINE input to LINE output (Vol.\/Max.) =\u0026gt; 17dB @ 1KHz\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eHeadphone Stage:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e560mW @ 32 ohm \/ 110mW @ 600ohm\u003c\/li\u003e\n\u003cli\u003eTHD+N: 0.004% @ 32 ohm \/ 480mW, 0.0015% @ 600 ohm \/ 100mW\u003c\/li\u003e\n\u003cli\u003eS\/N ratio \u0026gt;110dB @ 32 ohm \/ 450mW\u003c\/li\u003e\n\u003cli\u003eFrequency Response: 0Hz to 50KHz (0.2dB), 200KHz (-3dB)\u003c\/li\u003e\n\u003cli\u003eGAIN: LINE input to LINE output (Vol.\/Max.) =\u0026gt; 17dB @ 1KHz\u003c\/li\u003e\n\u003cli\u003eDynamic Range \u0026gt; 115dB\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDimensions and Weight:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWorldwide AC voltage: (90VAC~130VAC \/\/ 210VAC~250VAC) With Voltage Select Switch\u003c\/li\u003e\n\u003cli\u003eAC Fuse: Slow-blow, T1A, 250VAC\u003c\/li\u003e\n\u003cli\u003eProduct Dimension:  55 x 235 x 281 mm (H x W x D)\u003c\/li\u003e\n\u003cli\u003ePackage Dimension: 80 x 390 x 360 mm (H x W x D)\u003c\/li\u003e\n\u003cli\u003eProduct Weight: 3kg\u003c\/li\u003e\n\u003cli\u003ePackage Weight: 4kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eWarranty: 1 year.\u003c\/span\u003e\u003c\/p\u003e","brand":"NuPrime","offers":[{"title":"Black","offer_id":62750243356831,"sku":null,"price":1548.99,"currency_code":"CAD","in_stock":true},{"title":"Silver","offer_id":62750243389599,"sku":null,"price":1548.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/5532\/6111\/files\/PRA-9_2-1200x628px-510x267_3488f804-a29d-464e-be01-77555606cc81.jpg?v=1775162106","url":"https:\/\/altitudoaudio.ca\/products\/pra-9x","provider":"Altitudo Audio","version":"1.0","type":"link"}