Class D amps

Thanks To Wolf_garcia and Kijanki!

I meant Thanks to Wolf_garcia and Vhiner. I will have to look up "good manners" in Audiogon's rules for use. No, better yet, I will contact the Audiogon Admin and ask under what if any circumstances it is permissible to ask questions if the answers to said posting are addressed anywhere else in the archives of Audiogon's entire history of subject matter on the issue of audio. Hmmm... don't seem to recall reading that restriction when I signed up. I will continue to post queries at will. To those who wish to control others, I am not fair game.

Nordic587 - Like any other class of amplifiers there are better and worse class D amps while everything depends on system synergy. My small class D amp is good for the price but in different price range you'll find many great class D amps like mentioned Kharma. Class D is this strange thing that sound at the same time great to some people and horrible to others. One limitation of class D is bandwidth related to switching frequency that is limited by speed of available Mosfets. 65kHz bandwidth of my amplifier causes about 20deg phase shift at 20kHz and therefore improper (shift) summing of harmonics. You can still find much higher bandwidth in some other class D amps like Spectron Musician III.

Class D used to be very primitive sawtooth modulator that converted voltage level to duty cycle (and therefore average value after filtering) with very limited bandwidth. Todays class D is much more sophisticated and resembles high power Delta-Sigma A/D converter byproduct. Principle of operation is well known and accepted (SACD is exactly the same thing - recorded PWM that just needs filtering) but implementation is constantly improving. I would rather live with existing limitations instead of TIM distortion (and therefor bright odd harmonic) produced by many class AB amps.

Fiddler....or they are not competetive in their price range...are not selling. Try Ayre, Audio Research, BAT, etc.,

Nordic587, it was merely a suggestion.