{"product_id":"nuprimeevolutionstasesi","title":"NuPrime Evolution STA-SE Stereo Power Amplifier, Silver","description":"\u003cp\u003eThe NuPrime Evolution STA-SE is a stereo power amplifier that combines two independent mono amplifiers with a GaN power supply in a slim chassis.\u003c\/p\u003e\u003cp\u003eIt is aimed at anyone who wants to combine the power of a power plant with the sensitivity of a good tube – without having to haul hundredweight transformer behemoths into the rack.\u003c\/p\u003e\u003ch2\u003eWhy the Evolution STA-SE?\u003c\/h2\u003e\u003cp\u003eThe heart is the ANC GaN power supply. Imagine high-end noise cancelling for your electricity: the supply actively monitors the line and cancels out interference in real time. This purity used to be achievable only with huge, outrageously expensive toroidal transformers. On top of that comes ODC technology, which corrects errors right at the components and pushes distortion down to 0.002 percent.\u003c\/p\u003e\u003cp\u003eNuPrime describes the Evolution series as reference class: detailed, wide, relaxed. The STA-SE is the power source in it – 400 watts per channel, at 8 as well as 4 ohms, and according to the manufacturer with the warmth of a Class-A circuit («Class-A-like warmth»).\u003c\/p\u003e\u003ch2\u003eWhat you get\u003c\/h2\u003e\u003cp\u003eThanks to the consistent dual-mono design, instruments stand razor-sharp on a wide, deep stage. The high switching frequency of 650 kilohertz exposes every detail of your source components – in the workshop we like to call it \"Liquid Precision\": it flows like liquid gold and still hits with the force of a hammer blow when the music demands it. Furutech RCA inputs and Eichmann speaker terminals provide clean connections; with first-class cables, the power amplifier thanks you audibly. Via the trigger input and output, the STA-SE switches on and off with your preamplifier – never again forget a power amplifier quietly glowing away.\u003c\/p\u003e\u003ch2\u003eVideo\u003c\/h2\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;max-width:100%;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/t2rAZ5fKThs\" title=\"NuPrime Audio Evolution STA\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/div\u003e\u003ch3\u003eWho is the Evolution STA-SE suited for – and who not?\u003c\/h3\u003e\u003cp\u003eIt is a true endgame device: even demanding electrostatic or magnetostatic speakers with a high appetite for current (up to 40 amperes of peak current) are driven effortlessly. Plainly put: if you are looking for the typically \"muddy\" or artificially sweetened sound of old classics, the STA-SE is almost too honest. It does not colour, it shows – a precision tool that gives you a truthful snapshot of your recordings.\u003c\/p\u003e\u003ch2\u003eOur verdict\u003c\/h2\u003e\u003cp\u003eOne of the most exciting power amplifiers in its class: compact, cool, quiet and yet brutally commanding. If you want the melt of a tube but do not want to give up the authority and bass control of a 400-watt power plant, you are in the right place. The low noise floor pays off especially at night – details emerge out of nothing.\u003c\/p\u003e\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Stereo power amplifier, dual mono, Class-D hybrid with ODC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput power (RMS):\u003c\/strong\u003e 2 x 400 watts at 8 and 4 ohms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower supply:\u003c\/strong\u003e ANC GaN with active noise cancellation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwitching frequency:\u003c\/strong\u003e 650 kilohertz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDistortion (THD+N):\u003c\/strong\u003e 0.002 percent at 5 watts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency response:\u003c\/strong\u003e 10 hertz to 50,000 hertz (-3 dB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal-to-noise ratio (S\/N):\u003c\/strong\u003e 110 decibels at 100 watts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput impedance:\u003c\/strong\u003e 47 kilohms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePeak current:\u003c\/strong\u003e up to 40 amperes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter capacitance:\u003c\/strong\u003e 52,000 µF total\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnections:\u003c\/strong\u003e Furutech FP900 RCA, balanced XLR, Eichmann binding posts, trigger input and output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (W x H x D):\u003c\/strong\u003e 430 × 57 × 375 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 9.0 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour:\u003c\/strong\u003e Silver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat's in the box:\u003c\/strong\u003e Power amplifier, power cable, trigger cable, user manual\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFAQ\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eDoes the STA-SE really deliver the same power at 4 and 8 ohms?\u003c\/strong\u003e\u003cbr\u003eYes. The GaN power supply works so controlled that the power amplifier stably delivers 2 x 400 watts RMS at 8 as well as 4 ohms. Where many amplifiers collapse at low impedance, the STA-SE keeps control – ideal for current-hungry or capacitive speakers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does gallium nitride (GaN) bring compared to classic silicon?\u003c\/strong\u003e\u003cbr\u003eGaN semiconductors switch significantly faster and more efficiently. This allows a very powerful power supply in a small space that generates less heat and reacts lightning-fast to the dynamic jumps of the music. The result is a calm, black background.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the STA-SE a Class-D power amplifier – doesn't that sound harsh?\u003c\/strong\u003e\u003cbr\u003eIt is Class-D, but a special one. Thanks to ODC error correction and the high switching rate of 650 kilohertz, it avoids the typical digital harshness and sounds natural and fine, more like a good Class-A circuit than a switching amplifier.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the STA-SE suit my speakers?\u003c\/strong\u003e\u003cbr\u003eIn the vast majority of cases yes – especially power-hungry or electrically tricky speakers benefit. Which preamplifier and power amplifier combination suits your room and your speakers, we are happy to clarify with you in person at HD Zürisee in Wädenswil.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy the NuPrime Evolution STA-SE at HD Zürisee?\u003c\/strong\u003e\u003cbr\u003eWe are an experienced specialist shop on Lake Zurich and know on which speakers such a power amplifier shines and on which it does not. Plus our own technician for delivery and setup, honest advice on the matching preamplifier and proper warranty handling. Call or write to us.\u003c\/p\u003e\u003ch2\u003eGoes well with\u003c\/h2\u003e\u003cp\u003eA power amplifier is only as good as what hangs in front of and behind it – this is how the chain sensibly grows further:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSource and preamplifier:\u003c\/strong\u003e The \u003ca href=\"\/en\/collections\/dac\"\u003eDAC\u003c\/a\u003e Evolution DAC-2 from the same series comes with a reference preamplifier and can drive the STA-SE directly. Alternatively a separate \u003ca href=\"\/en\/collections\/vorverstarker\"\u003epreamplifier\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDigital:\u003c\/strong\u003e A \u003ca href=\"\/en\/collections\/streamer\"\u003estreamer\u003c\/a\u003e or the Evolution Stream Server as a Roon hub – only necessary if you listen to music from the network; a subscription is not required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeakers:\u003c\/strong\u003e \u003ca href=\"\/en\/collections\/lautsprecher\"\u003eSpeakers\u003c\/a\u003e with a hunger for current are its territory – with 400 watts per channel you can afford to be choosy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCabling:\u003c\/strong\u003e \u003ca href=\"\/en\/collections\/xlr-kabel\"\u003eXLR cables\u003c\/a\u003e for the balanced connection and a good \u003ca href=\"\/en\/collections\/netzkabel\"\u003epower cable\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMains:\u003c\/strong\u003e If you like it clean: the Pure AC-6 power conditioner from the Power series. Honestly, the audible effect depends on the rest of the system – we will tell you openly whether it is worthwhile for you.\u003c\/li\u003e\n\u003cli\u003eMore from the series: \u003ca href=\"\/en\/collections\/nuprime\"\u003eNuPrime\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NuPrime","offers":[{"title":"Default Title","offer_id":52989544399184,"sku":"NP-EVOSTASE-SILVER","price":5499.0,"currency_code":"CHF","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0932\/3262\/8048\/files\/nuprime-evolution-sta-se-stereo-endstufe-silber-frontansicht.png?v=1786615109","url":"https:\/\/hdzuerisee.ch\/en\/products\/nuprimeevolutionstasesi","provider":"HD Zürisee AG","version":"1.0","type":"link"}