 The classic award winning amplifier design of the original Adcom GFA-555mkII has been reborn. Externally, the chassis footprint and front panel design are identical to the original. Internally, all circuitry has been upgraded to meet ETL/ETLc, FCC, LVD and CE/EMC requirements using UL approved FR-4 printed circuit boards. High performance component selections include ultra low ESR electrolytic capacitors. The result of these improvements is lower distortion, better dynamic range, improved damping factor and greater stability and separation of individual instruments on the sound stage. Features200 watts per channel, 8 ohms300 watts per channel, 4 ohms 600 watts, 8 ohms BRIDGED Balanced and Single-Ended Inputs 16 discrete output transistors Custom 700 watt toroidal transformer 60,000uF total storage capacitance Ultra-Stable Bias Circuitry Direct-Coupled Input & Output Circuitry No Current Limiting No Output Inductor Two year limited manufacturer warranty SpecificationsPower Rating (To FTC Requirements) 200 Watts continuous average power into 8 ohms at any frequency between 20Hz and 20kHz with both channels driven at less than 0..04% THD.300 Watts continuous average power into 4 ohms at any frequency between 20Hz and 20khz with both channels driven at less than 0.04% THD. * 600 Watts continuous average power into 8 ohms at any frequency between 20Hz and 20kHz at less than 0..09% THD, bridged. * IM Distortion (SMPTE) 1 watt to 200 watts into 8 ohms 0.009% 1 watt to 300 watts into 4 ohms 0.009% IM Distortion (CCIF, Any Combination from 4kHz to 20kHz) 200 watts into 8 ohms 0.002% 300 watts into 4 ohms 0.003% THD + Noise at 200 watts into 8 Ohms (Typical) 20Hz 0.004%, 1kHz 0.003%, 10kHz 0.006%, 20kHz 0.010% THD + Noise at 300 watts into 4 Ohms (Typical) 20Hz 0.005%, 1 kHz 0.004%, 10kHz 0.015%, 20kHz 0.025% IM Distortion, Bridged (SMPTE) 1 watt to 600 watts into 8 ohms 0.05%, 1 watt to 850 watts into 4 ohms 0.05% IM Distortion (CCIF, Any Combination from 4kHz to 20kHz) 600 watts into 8 ohms 0.005%, 850 watts into 4 ohms 0.005% THD + Noise at 600 watts into 8 Ohms, Bridged (Typical) 20Hz 0.004%, 1kHz 0.004%, 10kHz 0.02%, 20kHz 0.04% Frequency Response @ I Watt into 8 Ohms 10Hz to 20kHz +0, -0.25dB Power Bandwidth (-3dB) 10Hz to 100kHz Dynamic Headroom Into 4 Ohms (1.7dB typical) 2.5dB* Signal to Noise Ratio, gAh Weighted 200 watts into 8 ohms 110dB Gain 27dB Input impedance 10k ohms balanced; 100k ohms unbalanced * With supplemental cooling system. 14 Input Sensitivity 200 watts into 8 ohms 1.75V rms, 1 watt into 8 ohms 130mV rms Damping Factor 2OHz to 2OkHz 900 Rise Time 5kHz, 120V peak-to-peak square wave, 20% to 80% 2.3S Power Consumption (Continuous, Both Channels Driven) Quiescent 72VA, Maximum 1500VA 200 watts into 8 ohms 675VA, 325 watts into 4 ohms 1180VA, 600 watts into 8 ohms, bridged 1320VA Power 120VAC.50/60Hz Chassis Dimension 6-15/16h (176mm) x 12-1/8h (308mm) x 16-15/16h (430mm) Maximum Dimensions 7-1/2h (191mm) x 12-1/2h (318mm) x 17h (432mm) Weight 36 lbs. (16.3kg) Weight, Packed 40 lbs. (18.1kg) |
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| Adcom GFA-6002 Stereo Amplifier | Adcom GFA-7605 5-Channel Amplifier | Adcom GFA-555ms Stereo Amplifier |
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$699.00
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$1199.00
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$899.00
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