Design engineers can evaluate operating efficiencies of audio amplifiers while using standard benchtop measurement systems.
It’s a conventional tube amplifier circuit in which the triode is a preamplifier for the pentode power output stage. The pentode is running in class A mode, and the high impedance of its output ...
Audiolab 's new 6000A MkII stereo amplifier teases improved performance thanks to its enhanced internal circuitry.