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GFA-555ms

Power Amplifier​

gfa-555ms
For those who desire the power finesse in a two-channel amplifier, look no further than GFA-555ms. The GFA-555ms amplifier can drive a very broad range of loudspeakers, including those with very low impedances, at sustained high-power levels, even when the impedances are highly reactive.

$1,399

gfa-555ms

Dynamic Sound

GFA-555ms runs on 200 W into 4 ohms, takes both Unbalanced and Balanced inputs and drives your speakers with 40+40 Watts of high performance, ultra low distortion power output all from a neat package. We have engineered an uncompromised circuit design that delivers ultra-low distortion and a crisp dynamic sound. It all adds up to a startlingly vivid and highly impactful musical performance that will put more energy into your loudspeakers as well as control them like never before.

Low Distortion

Great care was taken to insure that distortion in the amplifier would remain extremely low, particularly when driving these highly reactive loads in which the phase angles of the voltageand the current are substantially different.

PRODUCT GALLERY

TECHNICAL SPECIFICATIONS

spec gfa555ms - Adcom

Output Power

125 watts into 8 ohms
200 watts into 4 ohms
400 watts into 8 ohms, bridged

Frequency Resp.

@ 1watt, 8-ohms:
+0. -0.25dB, 10Hz to 20kHz

Power Bandwidth (-3dB):

10Hz to 100kHz

Input Impedance

100,000 ohms.

Power

120VAC & 230VAC / 50-60Hz

Damping Factor

>400, 20Hz to 20kHz

Input Sensitivity

1.38V rms, 125W into 8 ohms
123mV rms, 1W into 8 ohms.

Max Dimensions

6” x 17” x 12.5”
152mm x 432mm x 318mm

Weight

28.6lbs.(13kg)
Shipping Weight: 33lbs.(15kg)
Note: For more technical specs, please refer to the attached user manual & Spec

What People Say?

“Adcom GFA-555ms is the latest version of the legendary Nelson Pass designed amp priced at $1,399 today.”

By Eric Forst  on FutureAudiophile.com
READ FULL REVIEW

Q & A

What is the MAX current draw of this unit during operation at max output Chris asked on February 19, 2024
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