{"product_id":"audac-adc-epa104-quad-channel-class-d-amplifier-4-x-100w-crossover","title":"AUDAC EPA104 – Quad-Channel Class-D Amplifier, 4 x 100W with Crossover","description":"\u003ch2\u003eWhat is the AUDAC EPA104 class-D amplifier?\u003c\/h2\u003e\u003cp\u003eThe AUDAC EPA104 is a 1RU 4-channel class-D power amplifier delivering 4 x 100 W into 4 Ω. It is an energy-efficient choice for low-impedance music systems in restaurants, retail, conference rooms and multi-purpose spaces. It drops into a 0.8 W standby mode when no audio is present.\u003c\/p\u003e\u003ch2\u003eHow does the AUDAC EPA104 class-D amplifier work?\u003c\/h2\u003e\u003cp\u003e\u003cimg src=\"https:\/\/images.pvs.global\/audac\/products\/EPA104.webp?width=1200\" alt=\"AUDAC EPA104 amplifier\" style=\"max-width:100%;height:auto\" loading=\"lazy\"\u003e\u003c\/p\u003e\u003cp\u003eThe EPA104 produces 4 x 50 W into 8 Ω or 2 x 200 W bridged into 8 Ω, with a full 20 Hz – 20 kHz response. A built-in crossover splits channels into full-range and subwoofer outputs, so one amp can run satellites and a sub; the mode is set by a switch next to the XLR inputs. Outputs use 2-pin Euro terminal connectors. Convection cooling means no fan noise in quiet rooms, and protection covers DC faults, shorts, overheating and overload. Auto-standby after 30 minutes without signal saves energy, and the unit is Energy Star certified. Compare the EPA models below.\u003c\/p\u003e\u003cp\u003eThe EPA series compared:\u003c\/p\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch\"\u003e\u003ctable style=\"border-collapse:collapse;min-width:560px;width:100%\"\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px;text-align:left\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px;text-align:left\"\u003eChannels\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px;text-align:left\"\u003e4 Ω\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px;text-align:left\"\u003e8 Ω\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px;text-align:left\"\u003e8 Ω bridged\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e\u003ca href=\"\/products\/audac-adc-epa152-dual-channel-class-d-amplifier-2-x-150w\"\u003eEPA152\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e2\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e2 x 150 W\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e2 x 80 W\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e300 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e\u003ca href=\"\/products\/audac-adc-epa252-dual-channel-class-d-amplifier-2-x-250w\"\u003eEPA252\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e2\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e2 x 250 W\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e2 x 130 W\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e500 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e\u003ca href=\"\/products\/audac-adc-epa502-dual-channel-class-d-amplifier-2-x-500w\"\u003eEPA502\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e2\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e2 x 500 W\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e2 x 300 W\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e1000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e\u003ca href=\"\/products\/audac-adc-epa104-quad-channel-class-d-amplifier-4-x-100w-crossover\"\u003eEPA104\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e4\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e4 x 100 W\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e4 x 50 W\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e2 x 200 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eWhat are the key features of the AUDAC EPA104 class-D amplifier?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4 x 100 W @ 4 Ω\u003c\/strong\u003e — 4 x 50 W @ 8 Ω.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated crossover\u003c\/strong\u003e — run satellites and a subwoofer from one amp.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto standby\u003c\/strong\u003e — 0.8 W after 30 minutes with no signal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConvection cooled\u003c\/strong\u003e — silent operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy Star certified\u003c\/strong\u003e — low running cost.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1RU steel chassis\u003c\/strong\u003e — standard 19 in rack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty\u003c\/strong\u003e — backed by a 5-year AUDAC manufacturer warranty.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhere is the AUDAC EPA104 class-D amplifier typically used?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eConference room\u003c\/li\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003cli\u003eCommercial meeting space\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eAll-hands room\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch\"\u003e\u003ctable style=\"border-collapse:collapse;width:100%;min-width:300px;table-layout:fixed\"\u003e\n\u003ccolgroup\u003e\n\u003ccol style=\"width:44%\"\u003e\n\u003ccol style=\"width:56%\"\u003e\n\u003c\/colgroup\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003eEPA104\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003ePower (AES)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e4 x 100 W @ 4 Ω; 4 x 50 W @ 8 Ω; 2 x 200 W @ 8 Ω bridged\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eFrequency response (±3 dB)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e20 Hz – 20 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eSignal\/noise\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e\u0026gt; 90 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eTHD+N\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e\u0026lt; 0.1%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eCrosstalk\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e\u0026gt; 70 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eInput sensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e0 dB (1 V RMS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eInput impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e12 kΩ balanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eInputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003eXLR female, with crossover mode switch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eOutputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e2-pin Euro terminal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eTechnology\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003eClass-D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e100–240 V AC, 50\/60 Hz, switching\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eConsumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e188 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eCooling\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003eConvection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e18.98 x 1.73 x 12.99 in (W x H x D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e9.92 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e19 in rack, 1RU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e5 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eCan it run 70V speakers?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eNo. The EPA series is for low-impedance (4 or 8 Ω) speakers.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eHow does the crossover work?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eA switch sets the amp to run some channels full-range and others as subwoofer outputs, so one 1RU unit powers satellites and a sub.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eWhat speakers work with the EPA104?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eIt drives 4 or 8 Ω speakers. For 70V\/100V lines, use the AUDAC SCP, CEP or PMQ series. Browse matching AUDAC speakers in the \u003ca href=\"\/collections\/audac\"\u003eAUDAC collection\u003c\/a\u003e.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eWhat warranty does the EPA104 carry?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eAUDAC covers it with a 5-year manufacturer warranty.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eCan Creation Networks install the EPA104?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes. We design, install, program and support AUDAC systems nationwide. Call (888) 230-3661.\u003c\/p\u003e\u003c\/details\u003e","brand":"Audac","offers":[{"title":"Default Title","offer_id":68024312103148,"sku":"ADC-EPA104","price":1232.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/files\/EPA104.webp?v=1793553598","url":"https:\/\/creationnetworks.net\/products\/audac-adc-epa104-quad-channel-class-d-amplifier-4-x-100w-crossover","provider":"Creation Networks","version":"1.0","type":"link"}