I found this old article and thought I would share: The Single-Ended Amplifier: Cary's Dennis Had | Stereophile.com

Harley: What are the virtues of single-ended?

Had: More than anything, the virtue of single-ended is the simplicity, and that the signal is handled in as linear a fashion as possible. In a push-pull amplifier you split the signal into two halves and then recombine those halves at the amplifier output. I felt that the power amplifier should just replicate what the CD player or turntable is outputting and maintain the integrity of the waveform. Single-ended makes the most common sense from an engineering standpoint and also has the least number of parts in the signal path. You're not taking the signal and dividing it up.

Review of Dennis' 805 amp:
Cary Audio Design CAD-805 monoblock power amplifier Sam Tellig 1/02 | Stereophile.com


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