Adcom GFA GFA-5500 - Manual

GFA-5400 GFA-5500 GFA-5802
Number of channels 2 2 2
Watts per channel into 8 ohms 125 200 300
Watts per channel into 4 ohms 200 350 450
Bridged power @ 8 ohms n/a n/a n/a
Rated THD 0.018% 0.018% 0.018%
THD + noise at full power into
8ohms/4ohms typical
20Hz 0.018% / 0.018% 0.018% / 0.018% 0.015% / 0.025%
1kHz 0.020% / 0.020% 0.020% / 0.020% 0.020% / 0.025%
20kHz 0.140% / 0.165% 0.130% / 0.160% 0.150% / 0.150%
Input required for 1 watt output 0.1 volt 0.1 volt 0.1 volt
Input required for rated output 1.125 volts 1.4 volts 1.7 volts
Dynamic headroom into 4 ohms 1.7dB 1.7dB 2.3dB
IM distortion CCIF full power any
combination 4kHz to 20kHz <0.035% <0.035% <0.075%
Frequency Response
20Hz to 20kHZ +0, -0.25dB +0, -0.25dB +0, -0.25dB
Power bandwidth (-3dB) 3Hz to 130kHz 3Hz to 130kHz 3Hz to 130kHz
Gain 29dB 29dB 29dB
Input impedance: Unbalanced 49.9k ohms 49.9k ohms 105k ohms
Input impedence: Balanced n/a n/a 10k ohms
Signal to noise ratio "A" weighted at
rated power into 8 ohms >100dB >100dB >105dB
Power consumption
(all channels driven)
Quiescent 150VA 192VA 540VA
Maximum 960VA 1440VA 1140VA
Dimensions (inches) HxWxD
Chassis 5 x 17 x 11½ 7 x 17 x 13 14 x 17 x 8
Maximum 5½ x 17 x 12½ 7º x 17 x 14 15½ x 17 x 8º
Weight (lbs)
Net 26.0 44.0 48.0
Packed 30.0 50.0 55.0
Home Audio Power Amps
ADCOM, LLC
8541 East Anderson Drive
Scottsdale, AZ 85255
Home Audio Power Amps
Tel: 480.607.2277
Fax: 480.348.9876
Email: [email protected]