{"product_id":"adcom-gfa-555se-power-amplifier","title":"ADCOM - GFA-555SE - Power Amplifier","description":"\u003ch4 style=\"text-align: center;\"\u003eADCOM - GFA-555SE - Power Amplifier\u003c\/h4\u003e\n\u003cp\u003eThe ADCOM GFA-555se is a high-current stereo power amplifier that revives one of ADCOM’s most recognized amplifier platforms with updated internal construction and modern compliance improvements. Based on the classic GFA-555 design, the GFA-555se is built for listeners who want strong output, stable speaker control, and the straightforward reliability that made the original model so respected.\u003c\/p\u003e\n\u003cp\u003eThe GFA-555se delivers 200 watts per channel into 8 ohms, 300 watts per channel into 4 ohms, and 600 watts in bridged mono operation into 8 ohms. It includes balanced XLR and unbalanced RCA inputs, high-quality gold-plated RCA jacks, gold-plated 5-way binding posts, independent channel power supplies, and 60,000µF of power supply filter capacitance. A custom toroidal transformer helps provide the current reserve needed for demanding loudspeakers and dynamic music playback.\u003c\/p\u003e\n\u003cp\u003eADCOM’s upgraded SE design uses precision-matched devices, fewer gain stages, large independent heatsinks, and independent distortion LEDs for each channel. Its high damping factor, wide power bandwidth, and low distortion performance make it a strong match for full-range speakers, large two-channel systems, and bridged mono applications. The GFA-555se offers classic ADCOM power with modern balanced connectivity and a durable chassis built for long-term system use.\u003c\/p\u003e\n\u003ch3\u003eFEATURES:\u003c\/h3\u003e\n\u003cul class=\"feat\"\u003e\n\u003cli\u003eHigh-current stereo power amplifier based on the classic GFA-555 design\u003c\/li\u003e\n\u003cli\u003e200 watts per channel into 8 ohms\u003c\/li\u003e\n\u003cli\u003e300 watts per channel into 4 ohms\u003c\/li\u003e\n\u003cli\u003e600 watts bridged mono into 8 ohms\u003c\/li\u003e\n\u003cli\u003eBalanced XLR and unbalanced RCA inputs\u003c\/li\u003e\n\u003cli\u003eCustom toroidal transformer supports strong peak current delivery\u003c\/li\u003e\n\u003cli\u003e60,000µF power supply filter capacitance provides reserve capacity\u003c\/li\u003e\n\u003cli\u003eIndependent power supplies support each amplifier channel\u003c\/li\u003e\n\u003cli\u003eIndependent distortion LEDs monitor each channel\u003c\/li\u003e\n\u003cli\u003eGold-plated 5-way binding posts support secure speaker connection\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-555se\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\u003e200Wpc Continuous, 20Hz-20kHz, Both Channels Driven, \u0026lt;0.04% 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\u003e300Wpc Continuous, 20Hz-20kHz, Both Channels Driven, \u0026lt;0.04% 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\u003e600W into 8 ohms, 20Hz-20kHz, \u0026lt;0.09% 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-20kHz, +0 \/ -0.25dB at 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\u003e10Hz-100kHz, -3dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDynamic Headroom\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.5dB into 4 ohms, with supplemental cooling\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≥110dB, A-Weighted, 200W 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\u003e27dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10k ohms Balanced, 100k ohms Unbalanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Sensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.75V RMS for 200W into 8 ohms; 130mV 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≥900, 20Hz-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≤0.009%, 1W to 200W\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≤0.009%, 1W to 300W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTHD + Noise - 200W into 8 ohms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.004% at 20Hz; 0.003% at 1kHz; 0.006% at 10kHz; 0.010% at 20kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTHD + Noise - 300W into 4 ohms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.005% at 20Hz; 0.004% at 1kHz; 0.015% at 10kHz; 0.025% at 20kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRise Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.3µS, 5kHz, 120V Peak-to-Peak Square Wave, 20% to 80%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e72VA Quiescent; 1500VA 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, 50\/60Hz; 230V Available by Special Order\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChassis Dimensions (H x W x D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6.9\" x 12.1\" x 16.9\" (176mm x 308mm x 430mm)\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\u003e7.5\" x 12.5\" x 17.0\" (191mm x 318mm x 432mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e36 lbs (16.3kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShipping Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40 lbs (18.1kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Dedicated Audio","offers":[{"title":"Default Title","offer_id":51933123936573,"sku":null,"price":2099.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5587\/files\/1_7c5f165c-2744-4322-aa31-7ae9c75d51cb.webp?v=1783373607","url":"https:\/\/www.dedicatedaudio.com\/products\/adcom-gfa-555se-power-amplifier","provider":"Dedicated Audio","version":"1.0","type":"link"}