{"product_id":"evolution-sta-se","title":"NuPrime Evolution STA Power Amplifier","description":"\u003cp\u003e\u003cspan\u003eThe Evolution STA-SE sets a new standard in distortion reduction with its Only Distortion Cancellation (ODC) technology and proprietary ultra-low-noise GaN (Gallium Nitride) power supply. This combination delivers exceptional clarity, a deep and expansive soundstage, high dynamic range, and warm, Class A-like tonal characteristics. Featuring a dual-mono stereo configuration, the amplifier outputs 400W x 2 at both 8 Ohm and 4 Ohm loads.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eThe New Benchmark in Reference Stereo Power\u003c\/h3\u003e\n\u003cp\u003eThe NuPrime Evolution STA-SE is not merely an update; it is a reimagining of what a reference-class stereo power amplifier can achieve. By combining our award-winning Only Distortion Cancellation (ODC) technology with a revolutionary ANC GaN (Gallium Nitride) Power Supply, the STA-SE delivers an staggering 400W per channel of pure, effortless authority.\u003c\/p\u003e\n\u003cp\u003eBuilding on the “giant-killing” reputation of its predecessor, the Special Edition pushes the boundaries of transparency, speed, and musicality, offering the liquid warmth of Class-A with the surgical precision and explosive dynamics that define the NuPrime sound.\u003c\/p\u003e\n\u003cp\u003eThe STA-SE continues to utilize NuPrime’s breakthrough Only Distortion Cancellation (ODC) Class-D design:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUnlike traditional designs that use a global feedback loop, ODC derives its error signal directly from the MOSFET devices and output filter. This approach resulted in a substantial reduction in distortion THD+N of 0.002%. This surgical level of precision results in a sound that is entirely neutral and transparent.\u003c\/li\u003e\n\u003cli\u003eHigh-Speed Resolution: Operating at a 650kHz switching frequency, the STA-SE captures the complex harmonic structure of live music, delivering a “holographic” soundstage that is both wider and deeper than its predecessor.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-21658\" src=\"https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/Evolution-STA-SE_PCB_4.jpg\" alt=\"\" width=\"800\" height=\"270\" srcset=\"https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/Evolution-STA-SE_PCB_4.jpg 800w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/Evolution-STA-SE_PCB_4-250x84.jpg 250w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/Evolution-STA-SE_PCB_4-768x259.jpg 768w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/Evolution-STA-SE_PCB_4-510x172.jpg 510w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\"\u003e\u003c\/p\u003e\n\u003ch3\u003eRevolutionary ANC GaN Power Supply Technology\u003c\/h3\u003e\n\u003ch4\u003eAdvanced GaN Power Factor Correction with Active Noise Cancellation\u003c\/h4\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-20741 size-large\" src=\"https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/PFC-Graph-500x500.jpg\" alt=\"\" width=\"500\" height=\"500\" srcset=\"https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/PFC-Graph-500x500.jpg 500w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/PFC-Graph-600x600.jpg 600w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/PFC-Graph-100x100.jpg 100w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/PFC-Graph-400x400.jpg 400w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/PFC-Graph-250x250.jpg 250w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/PFC-Graph-768x768.jpg 768w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/PFC-Graph-1536x1536.jpg 1536w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/PFC-Graph-32x32.jpg 32w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/PFC-Graph.jpg 2000w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eHow it Works:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe ANC Feedback Loop:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMuch like high-end noise-canceling headphones, the STA-SE’s power supply monitors the AC line for noise and ripple. It then generates an “anti-noise” signal to cancel out interference in real-time. This reduces power supply noise to levels previously thought achievable only by massive, expensive linear transformers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Phase Interleaved Topology:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBy interleaving two power phases, the STA-SE significantly reduces ripple current and ensures a smoother, more stable delivery of energy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEfficiency Meets Authority:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe GaN semiconductors operate at switching speeds far beyond traditional silicon. This allows for near-instantaneous current delivery (up to 40A) and a near-perfect power factor, ensuring that the amplifier remains cool and unshakeable even when driving the most difficult, low-impedance speakers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eGallium Nitride High Frequency High Efficiency Power Module (Gan HFHFPM)\u003c\/h4\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-21657 size-large\" src=\"https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/Evolution-STA-SE_PCB_3-564x500.jpg\" alt=\"\" width=\"564\" height=\"500\" srcset=\"https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/Evolution-STA-SE_PCB_3-564x500.jpg 564w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/Evolution-STA-SE_PCB_3-451x400.jpg 451w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/Evolution-STA-SE_PCB_3-250x222.jpg 250w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/Evolution-STA-SE_PCB_3-768x681.jpg 768w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/Evolution-STA-SE_PCB_3-510x452.jpg 510w, https:\/\/us-nuprimeaudio.b-cdn.net\/wp-content\/uploads\/Evolution-STA-SE_PCB_3.jpg 800w\" sizes=\"auto, (max-width: 564px) 100vw, 564px\"\u003e\u003c\/p\u003e\n\u003cp\u003eBeyond the PFC stage, the Evolution STA-SE employs new-generation GaN semiconductor modules for the critical power conversion stages that supply the amplifier circuits. The choice of GaN semiconductors over traditional silicon-based solutions enables this extraordinary power density (400W x 2) while maintaining excellent thermal characteristics and switching efficiency. This translates to reduced heat generation and improved long-term reliability.\u003c\/p\u003e\n\u003ch4\u003eEngineering Excellence Through Miniaturization\u003c\/h4\u003e\n\u003cp\u003ePerhaps most remarkably, this advanced power supply system delivers performance equivalent to traditional transformer-based power supplies while\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eoccupying only one-fourth the physical space and weighing merely 20% of conventional designs\u003c\/em\u003e. This dramatic reduction in size and weight opens new possibilities for amplifier design and placement flexibility without compromising performance.\u003c\/p\u003e\n\u003ch3\u003eThe Sonic Signature: “Liquid Precision”\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Bass:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAuthoritative, rock-solid, and richly textured. With high current capability and exceptional control, low frequencies are delivered with speed, weight, and precision — not just heard, but felt, maintaining perfect timing even in complex passages.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Midrange:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFull-bodied, natural, and saturated with a Class-A-like warmth inspired by the NJR MUSES8820 op-amp stage. Vocals and instruments possess a lifelike presence, allowing the speakers to disappear within a wide and deep soundstage that reveals even the most subtle details without artificial enhancement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Treble:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRefined, airy, and extended, free from the ringing or brightness often associated with high-power switching amplifiers. Ultra-low distortion and a clean background ensure delicate nuances emerge with purity and realism.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDynamics:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFast, expansive, and effortlessly powerful. From the subtlest micro-details to large-scale orchestral crescendos, the presentation maintains clarity at the deepest layers, offering greater dynamic range, scale, and transparency throughout.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Highlights\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMassive Output: 400W x 2 RMS @ 8 Ohms and 4 Ohms. The maximum RMS output is 400W per channel; therefore, both 4-ohm and 8-ohm loads receive the same power.\u003c\/li\u003e\n\u003cli\u003eDual-Mono Configuration: Truly independent power paths for left and right channels to eliminate crosstalk and maximize imaging precision.\u003c\/li\u003e\n\u003cli\u003eHigh-Speed Switching: Operating at 650kHz, the switching frequency allows for a resolution that approaches the finest analog designs.\u003c\/li\u003e\n\u003cli\u003eThe entire power path fully adopts\u003cspan\u003e \u003c\/span\u003e\u003cem\u003e40A ultra-high current\u003c\/em\u003e\u003cspan\u003e \u003c\/span\u003eand low resistance terminals. Improve current dynamic capability. Total of 52,000uF power supply filter capacitors.\u003c\/li\u003e\n\u003cli\u003ePreamp stage and Class D oscillation circuit utilizing high-end NJR MUSES8820 op-amp.\u003c\/li\u003e\n\u003cli\u003eFeaturing Furutech FP900 RCA inputs and high-conductivity binding posts for an uncompromized connection.\u003c\/li\u003e\n\u003cli\u003eHigh quality copper PCB trace instead of usual cables are used to connect the power supply to the amplifier’s circuitry, maximizing power delivery.\u003c\/li\u003e\n\u003cli\u003eResonant-Free Chassis: Mounted on NuPrime’s proprietary vibration-damping isolation feet.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-path-to-node=\"24\"\u003eWhy the Evolution STA-SE?\u003c\/h3\u003e\n\u003cp data-path-to-node=\"25\"\u003eReviewers of the original STA noted it was “difficult to criticize” and “kept them listening late into the night.” The\u003cspan\u003e \u003c\/span\u003e\u003cb data-path-to-node=\"25\" data-index-in-node=\"119\"\u003eSTA-SE\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003etakes that winning formula and adds nearly double the power and a next-generation GaN power architecture. It is the ultimate choice for the audiophile who demands the soul of a tube amp and the muscle of a powerhouse solid-state, without the heat, weight, or distortion of either.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePower Output (RMS): 400W @ 8 Ohms , 400W @ 4 Ohms\u003c\/li\u003e\n\u003cli\u003eGain: x21\u003c\/li\u003e\n\u003cli\u003eSensitivity (to rated power): 2Vrms\u003c\/li\u003e\n\u003cli\u003eInput Impedance: 47K Ohms\u003c\/li\u003e\n\u003cli\u003eOutput Impedance: 4m Ohm\u003c\/li\u003e\n\u003cli\u003eFurutech FP900 RCA input connectors and Eichmann binding post.\u003c\/li\u003e\n\u003cli\u003eWATT \/ THD \/ S\/N (typical) : @5W (0.0025% ,95db) , @50W (0.007% , 105db) , @100W (0.01% , 110db)\u003c\/li\u003e\n\u003cli\u003eFrequency Response: 10Hz to 50kHz (-3dB)\u003c\/li\u003e\n\u003cli\u003eTrigger IN and OUT\u003c\/li\u003e\n\u003cli\u003eStandby Power : 1.5W @ 115V outlet, 1.7W @ 230V outlet\u003c\/li\u003e\n\u003cli\u003eIdle Power : 24W @ 115V outlet, 26W @ 230V outlet\u003c\/li\u003e\n\u003cli\u003eWorldwide AC voltage: (115VAC \/ 230VAC) with Voltage Select Switch\u003c\/li\u003e\n\u003cli\u003eAC Fuse : Slow blow , 7A , 250VAC\u003c\/li\u003e\n\u003cli\u003eColor : Black or Silver\u003c\/li\u003e\n\u003cli\u003eProduct Dimension:  57 x 430 x 375 mm (H x W x D)\u003c\/li\u003e\n\u003cli\u003ePackage Dimension: 642 x 594 x 254 mm (H x W x D)\u003c\/li\u003e\n\u003cli\u003eProduct Weight: 5.2kg\u003c\/li\u003e\n\u003cli\u003ePackage Weight: 7.5kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"25\"\u003e\u003cspan\u003eWarranty: 3 years.\u003c\/span\u003e\u003c\/p\u003e","brand":"NuPrime","offers":[{"title":"Black","offer_id":62756346921119,"sku":null,"price":6475.0,"currency_code":"CAD","in_stock":true},{"title":"Silver","offer_id":62756346953887,"sku":null,"price":6475.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/5532\/6111\/files\/EVO-STA_4-510x267_c17e4130-1d73-4cd3-8ce0-78e1cda1c232.jpg?v=1775597517","url":"https:\/\/altitudoaudio.ca\/products\/evolution-sta-se","provider":"Altitudo Audio","version":"1.0","type":"link"}