Building on the oiginal GFP-555, the Mk II features a beefier power supply, and several signal path upgrades. This preamp was designed to complement the GFA-555. This particular piece comes from a single owner, and is in excellent condition.
- Production
- 1986-90
- Condition
- 9/10
- Serial No.
- 951AG10919
- Restoration
- Full 30-point service check
- Cleaned controls, switches, and chassis
- Factory Specs
Frequency response 5Hz to 85kHz
Total harmonic distortion 0.003%
Input sensitivity 2.2mV/cm (MM/MC), 200mV (line)
Signal to noise ratio 90dB (phono), 100dB (line)
Channel separation 75dB (line)
Output 2V (pre out)
Dimensions 17"W x 3"H 12"D
Weight 11.5 lbs.
- Documentation
Adcom GFP-555ii Owner's Manual
- Liner Notes
A look under the hood of the GFP-555 shows it to be an extremely simple layout. Only two pairs of short ribbon wires, a blue one for each of the selector knobs, and a black pair for the phono section, and that’s it. The simple gain-path philosophy is readily apparent. There really are not many components soldered onto the board, helping to explain the rather relaxed, non-technical sound.
- Stock No.
- 7678567383261
Building on the oiginal GFP-555, the Mk II features a beefier power supply, and several signal path upgrades. This preamp was designed to complement the GFA-555. This particular piece comes from a single owner, and is in excellent condition.
