Got this Adcom GFA-555ii in a bulk buy along with some other gear. It’s working and partially restored already. Has all new output transistors

Testing:

Max Power

Factory Specs:

• Rated Power for 8 ohm load: 200 wpc across 20-20k Hz @ 0.04% THD

Left Channel	Right Channel

Amplitude Swept THD

Factory Specs: THD+N @ 200 watts into 8 ohms

• 0.004% (-88 dB) @ 20Hz
• 0.003% (-90 dB) @ 1kHz
• 0.015% (-77 dB) @ 10kHz
• 0.025% (-72 dB) @ 20kHz

Left Channel	Right Channel

Averaged Frequency Response

Factory Specs:

• +/- 0.25 dB @ 1 Watt, 20-20kHz

Left Channel	Right Channel

Continuous Frequency Sweep

Factory Specs:

• +/- 0.25 dB @ 1 Watt, 20-20kHz

Left Channel	Right Channel

Discrete Frequency Sweep

Factory Specs:

• +/- 0.25 dB @ 1 Watt, 20-20kHz

Left Channel	Right Channel

One Shot IMD

Factory Specs:

• 0.009% or -81 dB

Left Channel	Right Channel

One Shot Phase, Gain, Distortion

Left Channel	Right Channel

One Shot Metrics

Factory Specs:

• IMD 0.009% (-81 dB)
• SNR A-Weighted 200 watts into 8 ohm: 110 dB
• Gain 27 dB

Left Channel	Right Channel

Settled Dynamic Range

Left Channel	Right Channel