Because the Gryphon Apex Stereo is big and heavy, I drove to Michael Fremer’s place in deepest, darkest New Jersey with my Audio Precision SYS2722 system,1 digital and analog oscilloscopes, and test loads. I preconditioned the amplifier by operating it at ⅛ the specified power into 8 ohms for 20 minutes. At the end of that time, the temperature of the heatsinks was 113.6°F/45.4°C and that of the top panel 105.3°F/40.8°C. The bias was set at High for all testing.
The Gryphon Apex Stereo has only balanced inputs.
