Vintage Adcom GFA-6000 Five Channel Power Amplifier Tested


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Vintage Adcom GFA-6000 5 Channel Power Amplifier Tested

Power Rating Front Channels: 100 Watts at 8 ohms

Power Rating Rear Channels: 60 Watts at 8 ohms

IM Distortion Front Channels <0.009%

IM Distortion Rear Channels <0.009%

Frequency Response: 10Hz to 20kHz.....+0,-0.25dB

Power Bandwidth (-3dB).....3Hz to 100kHz

Dynamic Headroom into 4 Ohms (3 Front Channels) .....2.8dB

Dynamic Headroom into 4 Ohms (2 Rear Channels) .....1.8dB

Signal to Noise Ratio 3 Front Channels 100 watts into 8 ohms.....>105dB

Signal to Noise Ratio 2 Rear Channels  60 watts into 8 ohms.....>102dB

Gain (Level Controls at Maximum).....29dB

Damping Factor

20Hz to 20kHz (3 Front Channels).....>1000

20Hz to 20kHz (2 Rear Channels).....>380

Rise Time

5kHz, 80V peak to peak square wave, 20% to 80% (3 Front Channels).....2.2us

5kHz. 62V peak to peak square wave, 20% to 80% (2 Rear Channels).....2.3us

Power Consumption



All channels driven at rated power into 8 ohms.....840VA

All channels driven at rated power into 4 ohms.....1320VA


Power (available in 220V or 240V on special order)


Chassis Dimensions

5"(127mm) x 17"(432mm) x 13.5"(343mm)

Maximum Dimensions 

5.5"(140mm) x 17"(432mm) x 14.25"(362mm)

Weight.....31.6 lbs.

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