{"product_id":"accuphase-a-80","title":"A-80 Class A Power Amplifier","description":"\u003cdiv class=\"pa-d5\" style=\"color:#080808;line-height:1.6;font-size:15px\"\u003e\n\u003cp style=\"margin:0 0 6px;font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:#8d1935;font-weight:600\"\u003eAccuphase · A Series\u003c\/p\u003e\n\u003cp style=\"margin:0 0 14px;font-size:18px;line-height:1.45;font-weight:600\"\u003eThe A-80 is the stereo version of Accuphase's fiftieth-anniversary A-300: 65 watts of pure Class A per channel that doubles to 130, 260 and 520 watts into 4, 2 and 1 ohm from ten-parallel push-pull MOS-FETs.\u003c\/p\u003e\n\u003cp style=\"display:inline-block;margin:0 0 18px;padding:4px 10px;border:1px solid #d8d5ce;border-radius:2px;font-size:13px;color:#55524c\"\u003ePrice is for one unit.\u003c\/p\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:#d8d5ce;border:1px solid #d8d5ce;margin:0 0 22px\"\u003e\n\u003cdiv style=\"background:#f7f6f2;padding:12px 14px\"\u003e\n\u003cdiv style=\"font-size:20px;font-weight:600;line-height:1.2\"\u003e65 W\/ch\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px;color:#55524c;line-height:1.35;margin-top:3px\"\u003epure Class A into 8 Ω; 520 W\/ch into 1 Ω\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#f7f6f2;padding:12px 14px\"\u003e\n\u003cdiv style=\"font-size:20px;font-weight:600;line-height:1.2\"\u003e1,000+\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px;color:#55524c;line-height:1.35;margin-top:3px\"\u003edamping factor\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#f7f6f2;padding:12px 14px\"\u003e\n\u003cdiv style=\"font-size:20px;font-weight:600;line-height:1.2\"\u003e123 dB\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px;color:#55524c;line-height:1.35;margin-top:3px\"\u003esignal-to-noise ratio\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#f7f6f2;padding:12px 14px\"\u003e\n\u003cdiv style=\"font-size:20px;font-weight:600;line-height:1.2\"\u003e98 lb\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px;color:#55524c;line-height:1.35;margin-top:3px\"\u003e44.6 kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin:0 0 12px\"\u003eAccuphase developed the A-80 as a stereo amplifier version of the A-300, and it inherits the anniversary model's architecture. Ten parallel push-pull power MOS-FETs per channel run in pure Class A, arranged as an instrumentation amplifier with balanced inputs, behind a toroidal transformer and 120,000 µF of filter capacitance; output doubles with each halving of impedance, to 520 watts into 1 ohm on music signals, and in bridged mono it delivers 260 watts into 8 ohms. MCS+ parallel voltage amplification, current feedback and balanced remote sensing give a damping factor above 1,000.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 20px\"\u003eClass A biasing means the A-80 idles at 211 watts and runs warm, and it rewards that with the effortless, grain-free sound that has made Accuphase's A series the choice of listeners who value texture over sheer level. MOS-FET switches handle protection without contacts in the signal path, and a four-position gain selector matches any preamplifier. With a C-3900S in front of it and speakers of moderate sensitivity, it is one of the finest stereo amplifiers we offer.\u003c\/p\u003e\n\u003ch3 style=\"margin:0 0 8px;font-size:16px\"\u003eKey technologies\u003c\/h3\u003e\n\u003cul style=\"margin:0 0 20px;padding-left:18px\"\u003e\n\u003cli style=\"margin:0 0 5px\"\u003e\n\u003cstrong\u003ePure Class A MOS-FET output stage.\u003c\/strong\u003e Ten parallel push-pull power MOS-FETs per channel in Class A: 65 W into 8 Ω, 130 W into 4 Ω, 260 W into 2 Ω, 520 W into 1 Ω (music signals).\u003c\/li\u003e\n\u003cli style=\"margin:0 0 5px\"\u003e\n\u003cstrong\u003eInstrumentation amplifier with MCS+.\u003c\/strong\u003e Balanced inputs feed a two-parallel voltage-amplification stage and current-feedback topology for a 123 dB signal-to-noise ratio.\u003c\/li\u003e\n\u003cli style=\"margin:0 0 5px\"\u003e\n\u003cstrong\u003eBalanced remote sensing.\u003c\/strong\u003e Feeds the ground reference at the speaker terminals back to the amplifier, raising the effective damping factor at the speaker rather than at the chassis.\u003c\/li\u003e\n\u003cli style=\"margin:0 0 5px\"\u003e\n\u003cstrong\u003eBridged and bi-amp modes.\u003c\/strong\u003e 260 W into 8 Ω, 520 W into 4 Ω or 1,040 W into 2 Ω bridged; four-position gain selector.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:0 0 8px;font-size:16px\"\u003eFinishes\u003c\/h3\u003e\n\u003cul style=\"list-style:none;margin:0 0 6px;padding:0\"\u003e\n\u003cli style=\"display:flex;align-items:center;gap:10px;margin:0 0 6px\"\u003e\n\u003cspan style=\"flex:0 0 18px;width:18px;height:18px;border-radius:50%;background:#d9c69b;border:1px solid #d8d5ce\"\u003e\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eChampagne gold\u003c\/strong\u003e \u003cspan style=\"color:#55524c\"\u003eanodized aluminum front panel\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin:0 0 20px;font-size:13.5px;color:#55524c\"\u003eAccuphase builds every component in a single finish, so there is nothing to choose. The champagne-gold front panel has been the house signature since 1972. The top plate is hairline-finished aluminum.\u003c\/p\u003e\n\u003cdetails open style=\"border-top:1px solid #080808;margin:0 0 6px\"\u003e\u003csummary style=\"cursor:pointer;padding:12px 0;font-size:16px;font-weight:600\"\u003eSpecifications\u003c\/summary\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;margin:0 0 14px\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eType\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003eStereo power amplifier, pure Class A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eRated output (20 Hz–20 kHz, both channels)\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003e65 W\/ch into 8 Ω; 130 W\/ch into 4 Ω; 260 W\/ch into 2 Ω; 520 W\/ch into 1 Ω (4 Ω and below on music signals)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eBridged mono output\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003e260 W into 8 Ω; 520 W into 4 Ω; 1,040 W into 2 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eOutput stage\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003eTen parallel push-pull power MOS-FETs per channel, Class A, instrumentation-amplifier configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eTotal harmonic distortion\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003e0.03% (4–16 Ω); 0.07% (2 Ω)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eFrequency response\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003e20 Hz–20 kHz, +0\/−0.2 dB (rated output); 0.5 Hz–160 kHz, +0\/−3 dB (1 W)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eDamping factor\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003e1,000 or greater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eGain\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003e28 \/ 25 \/ 22 \/ 16 dB, selectable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eInput sensitivity \/ impedance\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003e0.91 V for rated output; 40 kΩ balanced (XLR), 20 kΩ line (RCA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eSignal-to-noise ratio\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003e123 dB (max gain); 129 dB (−12 dB gain); A-weighted, input shorted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003ePower supply\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003eToroidal transformer; 120,000 µF filter capacitors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003ePower consumption\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003e211 W idle; 260 W (IEC 62368-1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eDimensions (W × H × D)\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003e18.3 × 9.4 × 20.3 in (465 × 240 × 515 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003e98 lb (44.6 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eSold as\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003eSingle unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp style=\"margin:0 0 14px;font-size:13px\"\u003e\u003ca href=\"https:\/\/www.accuphase.com\/model\/a-80.html\" target=\"_blank\" rel=\"noopener\"\u003eAccuphase A-80 product page and specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-top:1px solid #080808;border-bottom:1px solid #080808;margin:0 0 22px\"\u003e\u003csummary style=\"cursor:pointer;padding:12px 0;font-size:16px;font-weight:600\"\u003eWhere it sits in the range\u003c\/summary\u003e\u003cdiv style=\"padding:0 0 14px\"\u003e\n\u003cp style=\"margin:0 0 8px\"\u003eThe stereo pure Class A amplifier. The A-300 is its monaural big brother; the P-4600 and P-7500 are the Class AB designs with more power per dollar.\u003c\/p\u003e\n\u003cul style=\"margin:0;padding-left:18px\"\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/accuphase-p-4600\"\u003eAccuphase P-4600\u003c\/a\u003e: 150 W\/ch Class AB stereo power amplifier\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/accuphase-p-7500\"\u003eAccuphase P-7500\u003c\/a\u003e: 300 W\/ch Class AB flagship stereo power amplifier\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccuphase A-80\u003c\/strong\u003e (this model)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/accuphase-a-300\"\u003eAccuphase A-300\u003c\/a\u003e: 125 W pure Class A monaural amplifier, sold per unit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin:10px 0 0\"\u003ePair it with the \u003ca href=\"\/products\/accuphase-c-3900s\"\u003eC-3900S\u003c\/a\u003e or \u003ca href=\"\/products\/accuphase-c-2300\"\u003eC-2300\u003c\/a\u003e. A second A-80 in bridged mode is the path to monaural Class A.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/details\u003e\n\u003ch3 style=\"margin:0 0 8px;font-size:16px\"\u003eReviews\u003c\/h3\u003e\n\u003cul style=\"margin:0 0 22px;padding-left:18px\"\u003e\n\u003cli style=\"margin:0 0 5px\"\u003e\n\u003ca href=\"https:\/\/theabsolutesound.podbean.com\/e\/accuphase-c2900-preamplifier-a80-amplifier-review\/\" target=\"_blank\" rel=\"noopener\"\u003eThe Absolute Sound (podcast): Accuphase C-2900 preamplifier and A-80 amplifier review\u003c\/a\u003e (June 2025)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"padding:16px 18px;background:#f7f6f2;border-left:3px solid #8d1935\"\u003e\n\u003cp style=\"margin:0 0 4px;font-weight:600\"\u003ePlan your Accuphase system with Pearl Audio\u003c\/p\u003e\n\u003cp style=\"margin:0;font-size:14px\"\u003ePearl Audio is an authorized Accuphase dealer in Portland, Oregon. We can help with system matching, delivery and setup, and arrange a listening appointment. Call \u003ca href=\"tel:+15032222599\"\u003e(503) 222-2599\u003c\/a\u003e or email \u003ca href=\"mailto:sales@pearlaudio.com?subject=Accuphase%20A-80\"\u003esales@pearlaudio.com\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Accuphase","offers":[{"title":"Default Title","offer_id":50784173621346,"sku":null,"price":26575.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2475\/2780\/files\/a-80.jpg?v=1793168974","url":"https:\/\/pearlaudio.com\/products\/accuphase-a-80","provider":"Pearl Audio","version":"1.0","type":"link"}