{"product_id":"sta-9x","title":"NuPrime STA-9X Power Amplifier","description":"\u003cp\u003e\u003cspan\u003eThe NuPrime STA-9X, a 2 X 130W Class A+D stereo amp, bridgeable into a 330W mono amp, is designed with enhanced even-order harmonic circuitry that mimics the most attractive features of tubed and Class-A amp sound without incurring their drawbacks and limitations. The STA-9X’s frequency response to 50 kHz elevates vocals into emotional experiences; similarly, instrumental upper registers mimic a live performance’s shimmering heights.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" decoding=\"async\" class=\"wp-image-13575 alignnone\" src=\"https:\/\/nuprimeaudio.com\/\/wp-content\/uploads\/sites\/7\/STA-9X_ClassA-Pre-333x400.jpg\" alt=\"\" width=\"250\" height=\"300\" srcset=\"https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/STA-9X_ClassA-Pre-333x400.jpg.webp 333w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/STA-9X_ClassA-Pre-247x296.jpg 247w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/STA-9X_ClassA-Pre-208x250.jpg 208w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/STA-9X_ClassA-Pre-417x500.jpg.webp 417w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/STA-9X_ClassA-Pre.jpg.webp 500w\" sizes=\"auto, (max-width: 250px) 100vw, 250px\"\u003e     \u003cimg loading=\"lazy\" decoding=\"async\" class=\"wp-image-13576 alignnone\" src=\"https:\/\/nuprimeaudio.com\/\/wp-content\/uploads\/sites\/7\/STA-9X_ClassD_Output-267x400.jpg\" alt=\"\" width=\"200\" height=\"300\" srcset=\"https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/STA-9X_ClassD_Output-267x400.jpg.webp 267w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/STA-9X_ClassD_Output-510x765.jpg 510w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/STA-9X_ClassD_Output-167x250.jpg.webp 167w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/STA-9X_ClassD_Output-333x500.jpg.webp 333w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/STA-9X_ClassD_Output.jpg.webp 600w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe STA-9X amplifier improved upon the ULCAM (Ultra Linear Class A Module)+Class D design of STA-9 with the design concept from AMG-STA. By joining a robust high impedance singled-ended non-negative feedback amplifier circuit in the preamp stage with a dual feedback Class-D power stage, the STA-9X sounded warm and dynamic with remarkable speed and clarity. NuPrime amplifier improves on traditional Class-D switching design by using a self-oscillating circuit to generate pulse-width modulation. STA-9X switches at a frequency of 750kHz (highest on the market), well beyond the compact disc’s 44.1kHz sampling rate. Most class-D amps switch at 300kHz or lower.\u003c\/p\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-13585\" src=\"https:\/\/nuprimeaudio.com\/\/wp-content\/uploads\/sites\/7\/STA-9X_PCB_3-400x400.jpg\" alt=\"\" width=\"200\" height=\"200\" srcset=\"https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/STA-9X_PCB_3-400x400.jpg.webp 400w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/STA-9X_PCB_3-100x100.jpg.webp 100w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/STA-9X_PCB_3-250x250.jpg.webp 250w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/STA-9X_PCB_3.jpg.webp 500w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\"\u003e     \u003cimg loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-13583\" src=\"https:\/\/nuprimeaudio.com\/\/wp-content\/uploads\/sites\/7\/STA-9X_PCB_5-400x400.jpg\" alt=\"\" width=\"200\" height=\"200\" srcset=\"https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/STA-9X_PCB_5-400x400.jpg.webp 400w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/STA-9X_PCB_5-100x100.jpg.webp 100w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/STA-9X_PCB_5-250x250.jpg.webp 250w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/STA-9X_PCB_5.jpg.webp 476w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\"\u003e     \u003cimg loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-13584\" src=\"https:\/\/nuprimeaudio.com\/\/wp-content\/uploads\/sites\/7\/STA-9X_PCB_4-400x400.jpg\" alt=\"\" width=\"200\" height=\"200\" srcset=\"https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/STA-9X_PCB_4-400x400.jpg.webp 400w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/STA-9X_PCB_4-100x100.jpg.webp 100w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/STA-9X_PCB_4-250x250.jpg.webp 250w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/STA-9X_PCB_4.jpg.webp 476w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\"\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eCompleting the ensemble is NuPrime’s new linear power supply with its high-efficiency toroidal transformer for reduced high-frequency noise and strengthened low-frequency performance. The damping effect of the NuPrime proprietary isolation feet absorbs and cancels vibrations that degrade audio performance. The overall result is unprecedented transient speed and an almost shocking level of dynamic impact.\u003cbr\u003eIn summary, NuPrime STA-9X has a sound characteristic that is spacious, transparent, dynamic, luxuriously textured with extended high-frequency.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eImproved over STA-9, the STA-9X Single End Non-Negative Feedback Class A and Dual Feedback Class D amplifier design derives from AMG STA. This design allows STA-9X to produce more details and higher resolution than STA-9.\u003c\/li\u003e\n\u003cli\u003eStereo mode bridgeable into mono mode.\u003c\/li\u003e\n\u003cli\u003eEnhanced even-order harmonic (H2) circuitry creates warmth and natural sound characteristic.\u003c\/li\u003e\n\u003cli\u003eHighly reliable under no-load condition and enhanced short circuit protection.\u003c\/li\u003e\n\u003cli\u003e130% higher output current drive capability than STA-9 allows low impedance speakers to have better dynamic and power.\u003c\/li\u003e\n\u003cli\u003eOperating at 750 kHz switching frequency, it produces high resolution with extended frequency.\u003c\/li\u003e\n\u003cli\u003eA new linear power supply with a high-efficiency toroidal transformer reduces high-frequency noise and strengthened low-frequency performance.\u003c\/li\u003e\n\u003cli\u003eThe signal path avoids cross-linking capacitors, thus achieving a frequency response at the DC level for pure musical enjoyment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eThe NuPrime Sound\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVast soundstage\u003c\/li\u003e\n\u003cli\u003eWide, lightning-fast dynamics\u003c\/li\u003e\n\u003cli\u003eUltra-low distortion and noise\u003c\/li\u003e\n\u003cli\u003eMusic emerges from a pristine background, with delicate details and nuances intact\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn summary, NuPrime’s sonic character stands well apart from – and indeed above – the soft, cushy sound we often associate with most tubed amplification or the dry, clinically edgy sound we often associate with solid-state and switching technology. Rarely does an amp achieve an ideal balance of richly textured timbres and harmonics, bottom-end authority, startling dynamics, exquisite low-level detail, and a fully revealed, fully dimensional soundstage against a backdrop of mile-deep silence.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInputs:\n\u003cul\u003e\n\u003cli\u003eRCA: Un-Balanced input x 1\u003c\/li\u003e\n\u003cli\u003eXLR: Balanced input x 1\u003c\/li\u003e\n\u003cli\u003eTRIGGER IN (12V)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eOutputs:\n\u003cul\u003e\n\u003cli\u003eStereo Speaker Out x 1\u003c\/li\u003e\n\u003cli\u003eMono Speaker Out x 1\u003c\/li\u003e\n\u003cli\u003eTRIGGER OUT (12V)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003ePower: 2 X 130W \/ 1 X 330W @ 8 \u0026amp; 4 Ohms\u003c\/li\u003e\n\u003cli\u003ePeak Output Power: 2 X 170W \/ 1 X 370W @ 8 Ohms\u003c\/li\u003e\n\u003cli\u003eInput Impedance: 47k Ohms\u003c\/li\u003e\n\u003cli\u003eOutput Impedance: 20m Ohm\u003c\/li\u003e\n\u003cli\u003eGain: 29.10 dB; Voltage Gain: 28.5\u003c\/li\u003e\n\u003cli\u003eSignal to Noise Ratio: \u0026gt; 90dB at 1W, 10W, 100W\u003c\/li\u003e\n\u003cli\u003eTHD+N: 0.005% (Stereo) \/ 0.005% (Mono)\u003c\/li\u003e\n\u003cli\u003eFrequency Response: 10Hz to 50kHz\u003c\/li\u003e\n\u003cli\u003eInput Sensitivity is 1.1 Vrms (to rated power)\u003c\/li\u003e\n\u003cli\u003eWorldwide AC voltage: (115 VAC \/ 230 VAC) with Voltage Select Switch\u003c\/li\u003e\n\u003cli\u003eAC Fuse: Slow-blow, 3A, 250VAC\u003c\/li\u003e\n\u003cli\u003eColor: Black or Silver\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: 4kg\u003c\/li\u003e\n\u003cli\u003ePackage Weight: 5kg\u003c\/li\u003e\n\u003cli\u003eWarranty: 1 year.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIMPORTANT: Do not connect both RCA and XLR inputs and use the toggle switch to select between the two inputs. The toggle switch is only for configuring the RCA or XLR inputs.\u003c\/p\u003e","brand":"NuPrime","offers":[{"title":"Black","offer_id":62750296408223,"sku":null,"price":1629.0,"currency_code":"CAD","in_stock":true},{"title":"Silver","offer_id":62750325964959,"sku":null,"price":1629.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/5532\/6111\/files\/STA-9X_8-510x267_e69817cb-80d2-4c0d-8379-b90d04a5cb8a.jpg?v=1775164862","url":"https:\/\/altitudoaudio.ca\/products\/sta-9x","provider":"Altitudo Audio","version":"1.0","type":"link"}