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$1,699
GFA-555se power amplifier represents the pinnacle of ADCOM’s audio engineering. This Nelson Pass design broke ground when it came out in the 80’s, getting rave reviews and providing tank-like reliability at a decent price. That these audio power amplifiers are still much in demand after so much time is a strong testament to their value and durability.
Output Power
200 watts per channel, 8 ohms
300 watts per channel, 4 ohms
600 watts, 8 ohms BRIDGED
Frequency Resp.
@ 1watt, 8-ohms:
10Hz to 20kHz +0, -0.25dB
Power Bandwidth (-3dB):
1.7Hz to 100kHz
Input Impedance
100k ohms unbalanced
10k ohms balanced
Power:
120VAC & 230VAC / 50-60Hz
Max Dimensions
7-1/2” x 12-1/2” x 17”
191mm X 318mm X 432mm
Weight
Input Sensitivity
1.75V rms, 200W into 8 ohms.
130mV rms, 1 W into 8 ohms.
Damping Factor
≥ 900, 20Hz to 20kHz.
4 speakers If 2 speakers per channel If all 8 ohm impedance speakers are connected in parallel, the total impedance is 4 ohms If all 4 ohm impedance speakers are connected in series, the total impedance is 8 ohms Recommended total impedances are 4, 6, and 8 ohms.
ADCOM give 2 Years Warranty(service and Parts).
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Verified OwnerPlenty of power and sounds great.
Verified OwnerFabulous!
Verified OwnerA smooth and clean sound.
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Noah –
All of the pro’s of the original GFA-555 and improved model GFA-555 II plus the GFA-555se includes toggle switch selectable single-ended RCA or XLR inputs which are TRUE balanced differential inputs (*confirmed by the factory engineers). Clean design, simple signal-path, heavy duty power supply (no inexpensive ‘switching power supply” as many others use) , class A/B operation and great performance for the price.
Joaquin Chang –
I have the pair (GFA 555SE- GFP 915) and I love them, awesome sound, running with Magnum Dynalab ft101a etude tuner , Philips 880 cd player, Nakamichi CR 1A cassette player, Polk audio Monitor 10 b series 2 speakers, music comes through with impeccable quality, clarity ,and sound staging. these are a winner give a listen!!
Ismail –
The GFA-555se offers excellent dynamic performance. One can clearly appreciate the pop or attack when a drum stick hits the snare or hear a rim shot. Low level dynamics, the quiet shifting of intensity of a voice, or the way Brad Paisley changes the force with which he plucks almost every guitar string, is apparent and enjoyable
Kai –
The Adcom GFA-555se may lack a few of the circuit niceties that are now part and parcel on modern amplifier designs – such as a standby circuit, for one – but it punches so far above its weight when it comes to must-haves such as high power, low noise, low distortion, extraordinary extended frequency response and, of course, superb sound, that it deserves to be included on the ‘must-listen list’ of anyone in the market for high-quality, high-fidelity power amplification
Anonymous (Verified Owner) –
A smooth and clean sound.
Denis Wood (Verified Owner) –
Fabulous!
Jimmy B. (Verified Owner) –
Plenty of power and sounds great.