{"product_id":"nuprime-evolution-sta-stereo-amplifier","title":"NuPrime Evolution STA Stereo Amplifier","description":"\u003cdiv style=\"max-width:720px;margin:0 auto;padding:32px 24px 48px 24px;background:#ffffff;\"\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:0 0 0.35em 0;font-weight:600;\"\u003eTwo Hundred and Thirty Watts That Get Quieter\u003c\/h2\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eThe Evolution STA is NuPrime's full-size statement stereo amplifier, and the numbers are the least interesting thing about it. It makes 230 watts per channel into 8 ohms and 310 into 4, with peaks of 270 and 360.\u003c\/p\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eWhat sets it apart is how quiet it gets as it works harder. Distortion measures 0.0025% at 5 watts, and signal-to-noise improves from 95dB at 5 watts to 110dB at 100. Most amplifiers go the other way.\u003c\/p\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eIt is a hybrid Class-D design in dual-mono configuration, so each channel has its own signal path rather than sharing one. At 430mm wide and 5.2kg it is full-size in footprint but not in weight.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eInside the Chassis\u003c\/h2\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eFrequency response runs 10Hz to 50kHz at −3dB, and gain is a straightforward 21 times. Input impedance is 47k ohms, so the amplifier sits behind a valve preamplifier as comfortably as a solid-state one.\u003c\/p\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eThe input connectors are Furutech FP900 RCA, which is the kind of part most manufacturers save for a flagship. In an amplifier the connector is the first thing every note passes through.\u003c\/p\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eIt measures 430mm wide, 375 deep and 57 high, and weighs 5.2kg, in black or silver. NuPrime covers the Evolution STA with a 3-year warranty, three times what it gives the STA-9 series.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eWho Is This Amplifier Best For?\u003c\/h2\u003e\n\n\u003cul style=\"margin:0 0 0.9em 0;padding-left:1.4em;line-height:1.6;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eYou listen at real levels\u003c\/strong\u003e — 230 watts into 8 ohms and 310 into 4 handles the great majority of speakers, and distortion actually falls as the amplifier settles into its stride.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYou care about the noise floor\u003c\/strong\u003e — signal-to-noise climbs from 95dB at 5 watts to 110dB at 100, so the background gets quieter the harder the amplifier works, not louder.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYou want dual-mono without two boxes\u003c\/strong\u003e — each channel runs its own signal path in one chassis, so channel separation does not depend on a shared layout.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYou are buying for the long term\u003c\/strong\u003e — NuPrime backs the Evolution STA for 3 years, against 1 year on its STA-9 series, which tells you how the company rates it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYou do not own a preamplifier yet\u003c\/strong\u003e — the Evolution STA is a power amplifier, with no volume control and no input switching. Pick a partner from our \u003ca href=\"https:\/\/www.audioadvisor.com\/collections\/preamplifiers\" style=\"color:#8a5a2b;\"\u003epreamplifiers\u003c\/a\u003e and the two make a system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eHow Does It Connect to Your System?\u003c\/h2\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eConnect your preamplifier to the Furutech FP900 RCA inputs, and speakers to the binding posts. The 47k ohm input impedance means a valve preamplifier will drive it without strain.\u003c\/p\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eGive it a normal shelf. It is full-width at 430mm but only 57mm high, so it stacks under or over other components without a special arrangement.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003ePairs Well With\u003c\/h2\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eHere are some great companions:\u003c\/p\u003e\n\n\u003cul style=\"margin:0 0 0.9em 0;padding-left:1.4em;line-height:1.6;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreamplifier:\u003c\/strong\u003e Required, and the natural next decision — see our \u003ca href=\"https:\/\/www.audioadvisor.com\/collections\/preamplifiers\" style=\"color:#8a5a2b;\"\u003ePreamplifiers\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeaker Cables:\u003c\/strong\u003e Carry the current properly — see our \u003ca href=\"https:\/\/www.audioadvisor.com\/collections\/speaker-cables\" style=\"color:#8a5a2b;\"\u003eSpeaker Cables\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterconnects:\u003c\/strong\u003e Balanced XLR is the better run from preamp to amp — see our \u003ca href=\"https:\/\/www.audioadvisor.com\/collections\/interconnect-cables\" style=\"color:#8a5a2b;\"\u003eInterconnect Cables\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAudio Rack:\u003c\/strong\u003e Give the amplifier a proper shelf — see our \u003ca href=\"https:\/\/www.audioadvisor.com\/collections\/audio-racks\" style=\"color:#8a5a2b;\"\u003eAudio Racks\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eHow much power does it make?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003e230 watts per channel into 8 ohms and 310 into 4 ohms, with peaks of 270 and 360 watts.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eWhy does the noise figure improve with power?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eSignal-to-noise is quoted at three levels: 95dB at 5 watts, 105dB at 50 and 110dB at 100. The amplifier's noise floor stays put while the signal rises.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eIs it fully dual-mono?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eIt is a hybrid Class-D design in dual-mono configuration, so each channel runs its own signal path within the one chassis.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eWhat inputs does it have?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eFurutech FP900 RCA input connectors, at 47k ohms input impedance, with a gain of 21 times.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eHow big is it?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003e430mm wide, 375mm deep and 57mm high, weighing 5.2kg, in black or silver.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eWhat warranty does it carry?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eNuPrime covers the Evolution STA with a 3-year warranty.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eWhy Audio Advisor?\u003c\/h2\u003e\n\n\u003cul style=\"margin:0 0 0.9em 0;padding-left:1.4em;line-height:1.6;\"\u003e\n\u003cli\u003e40+ Years of Expertise — Since 1981, we've helped over a million music lovers find the right gear.\u003c\/li\u003e\n\u003cli\u003e60-Day Money-Back Guarantee — Take your time. Listen, enjoy, and make sure it's right for you.\u003c\/li\u003e\n\u003cli\u003eReal Experts, Real Help — Our team is here to answer your questions at 800-942-0220, weekdays 9am–6pm EST.\u003c\/li\u003e\n\u003cli\u003eFree Shipping — On orders over $49, delivered to your door.\u003c\/li\u003e\n\u003cli\u003eFlexible Payment Options — Financing available so you can start listening now.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eLearn More\u003c\/h2\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eWant to learn more about power amplifiers, bridging an amplifier to mono, or building a separates system? Visit our \u003ca href=\"https:\/\/learningcenter.audioadvisor.com\/\" style=\"color:#8a5a2b;\"\u003eLearning Center\u003c\/a\u003e for guides, tips, and expert advice.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Audio Advisor","offers":[{"title":"Black \/ New","offer_id":45982021877933,"sku":"NEW-NPEVOSTA-BLK","price":4995.0,"currency_code":"USD","in_stock":false},{"title":"Black \/ Demo","offer_id":45982021910701,"sku":"DEMO-NPEVOSTA-BLK","price":2999.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/3708\/1773\/files\/NPEVOSTA_SIL_01-Large__10312.1724172665.1280.1280_ce460de4-14e6-47c4-a7e4-d7cab99968b4.jpg?v=1778103485","url":"https:\/\/www.audioadvisor.com\/products\/nuprime-evolution-sta-stereo-amplifier","provider":"Audio Advisor","version":"1.0","type":"link"}