Equipment information

Adcom GFA-555 II Amplifier
Model GFA-555 II
Category Audio Video TV Multimedia
Group Amplifier
Description Power Amplifier
                                    The Adcom GFA-555D is a stereo power Amplifier rated at less
than 0.04% THD from 20Hz to 20kHz with 200 watts into 8 ohms
and 325 watts into 4 ohms. The output stage Is capable of
greater than 60 amps into low impedance loads. The Amplifier
employs a discrete differential Class-A front* end followed
by a Class-A voltage gain stage which amplify the input
signal to the voltage required at the output of the
amplifier. This high-voltage signal drives the high-current
triple-Darlington-follower output stage which amplifies the
current by a factor of about 50,000.

These manuals are available for the above equipment:

Manual Type Service Manual Adcom-9419-Manual-Page-1-Picture
Pages 17
Size 1.76 Mbytes (1846176 Bytes)
Language english
Quality Scanned document, reading partly badly, partly not readable.
Upload date
MD5 855aae852898b4e92f6f37e323d8a27a
Downloads 239 since 26 August 2017
This service manual is intended to assist trained and
qualified technical personnel in verifying the performance
of, adjusting, and repairing the Adcom GFA-555II power
amplifier. The procedures described here are not intended
for persons unfamiliar with the appropriate safety and test

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