The output stage uses 18 devices (bipolar) per side (push-pull) for a total of 36. The 2.35 kVA (2,300 watts) toroidal power supply transformer and 134,400 μF of power supply capacitance give the amplifier plenty of room for transient demands. The amplifier is biased about 3 watts into Class A. The amount of Vbias applied is designed to fit the point where conduction is close to 180° but not at the expense of increasing crossover distortion due to rapidly increasing transconductance (gm).
conclusions
The Classé CA-M600 monoblock is one of the finest power amplifiers I have ever had in our lab. It sounded wonderful, and the bench test results were spectacular. Now that’s what I call an upgraded design!
Last edited by joeinid; 02-03-2013 at 03:55 AM.
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