{"product_id":"adcom-gfa-585se-power-amplifier","title":"ADCOM - GFA-585SE - Power Amplifier","description":"\u003ch4 style=\"text-align: center;\"\u003eADCOM - GFA-585-SE - Power Amplifier\u003c\/h4\u003e\n\u003cp\u003eThe ADCOM GFA-585se is a powerful Class A\/B stereo power amplifier built for systems that need major output, high current capability, and stable control over demanding loudspeakers. Rated at 450 watts per channel into 8 ohms and 600 watts per channel into 4 ohms, it is designed for large rooms, full-range speakers, and high-output listening without giving up the direct, muscular character associated with ADCOM amplification.\u003c\/p\u003e\n\u003cp\u003eThe GFA-585se uses a large 1.7kVA shielded toroidal transformer, 132,800µF of output-stage filter capacitance, and 28 beta-matched TO-3 output transistors to support strong current delivery into real speaker loads. Balanced XLR and unbalanced RCA inputs give it flexibility with modern preamplifiers and traditional stereo systems, while 24K gold-plated speaker terminals provide a secure connection for heavy speaker cable. In bridged mono operation, the amplifier delivers 1000 watts into 8 ohms for systems requiring even greater output from a single channel.\u003c\/p\u003e\n\u003cp\u003eADCOM also builds the GFA-585se with practical system-control features, including manual power, auto signal sensing, 5V-12V trigger input, and 12V trigger output for connected components. DC voltage protection, speaker relay protection, thermal indicators, overload alerts, and large external heatsinks help support safe operation under demanding playback conditions. For listeners who want ADCOM’s strongest stereo amplifier platform, the GFA-585se offers serious power, broad compatibility, and the physical build expected from a flagship high-current design.\u003c\/p\u003e\n\u003ch3\u003eFEATURES:\u003c\/h3\u003e\n\u003cul class=\"feat\"\u003e\n\u003cli\u003eHigh-current Class A\/B power amplifier for demanding speaker systems\u003c\/li\u003e\n\u003cli\u003e450 watts per channel into 8 ohms\u003c\/li\u003e\n\u003cli\u003e600 watts per channel into 4 ohms\u003c\/li\u003e\n\u003cli\u003e1000 watts bridged mono into 8 ohms\u003c\/li\u003e\n\u003cli\u003eBalanced XLR and unbalanced RCA inputs\u003c\/li\u003e\n\u003cli\u003eDrives low-impedance and reactive loudspeaker loads\u003c\/li\u003e\n\u003cli\u003e132,800µF filter capacitance supports strong reserve power\u003c\/li\u003e\n\u003cli\u003e1.7kVA toroidal transformer provides stable current delivery\u003c\/li\u003e\n\u003cli\u003eHigh damping factor supports tight speaker control\u003c\/li\u003e\n\u003cli\u003eAuto signal sensing and 5V-12V trigger support system automation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSPECIFICATIONS:\u003c\/h3\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh-Current Power Amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGFA-585se\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAmplifier Class\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eClass A\/B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChannels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2-Channel Stereo \/ Bridged Mono\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Output - 8 ohms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e450Wpc Continuous, 20Hz-20kHz, Both Channels Driven, \u0026lt;0.05% THD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Output - 4 ohms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e600Wpc Continuous, 20Hz-20kHz, Both Channels Driven, \u0026lt;0.07% THD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Output - Bridged Mono\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1000W into 8 ohms, 20Hz-20kHz, \u0026lt;0.10% THD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10Hz-140kHz, -3dB, 1W into 8 ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Bandwidth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20Hz-20kHz, 0.25dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDynamic Headroom\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.10dB into 4 ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSignal-to-Noise Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≥115dB, A-Weighted, 450W into 8 ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGain\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e27.0dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e22,000 ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Sensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.681V RMS for 450W into 8 ohms; 126mV RMS for 1W into 8 ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDamping Factor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;800, 20Hz-20kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTHD + Noise - 450W into 8 ohms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.020% at 20Hz; 0.008% at 1kHz; 0.030% at 10kHz; 0.050% at 20kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTHD + Noise - 600W into 4 ohms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.04% at 20Hz; 0.01% at 1kHz; 0.05% at 10kHz; 0.07% at 20kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIM Distortion - 8 ohms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤0.03%, 1W to 450W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIM Distortion - 4 ohms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤0.05%, 1W to 600W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Supply Capacitance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e132,800µF Output Stage Filter Capacitance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransformer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.7kVA Shielded Toroidal Power Transformer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Devices\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e28 Beta-Matched TO-3 Output Transistors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBalanced XLR, Unbalanced RCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpeaker Terminals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24K Gold-Plated Heavy Speaker Terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Modes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eManual, Auto Signal Sensing, 5V-12V DC Trigger\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrigger Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12V DC, 100mA, 3.5mm Jack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC Voltage Protection, Speaker Relay Protection, Thermal and Overload Indicators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.5VA Standby, 130VA Manual, 2000VA Maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Requirements\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e120VAC and 230VAC, 50\/60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Dimensions (H x W x D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10.7\" x 19.0\" x 19.7\" (275mm x 482mm x 502mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e70.4 lbs (32kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShipping Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e79.2 lbs (36kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Dedicated Audio","offers":[{"title":"Default Title","offer_id":51933130260797,"sku":null,"price":3999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5587\/files\/1_1997b5e5-2bdd-413b-835f-fa1c56f0bfbb.webp?v=1783373520","url":"https:\/\/www.dedicatedaudio.com\/products\/adcom-gfa-585se-power-amplifier","provider":"Dedicated Audio","version":"1.0","type":"link"}