Paralleled Transistors


Is there any truth to the argument that many paralleled output transistors, despite strong attempts to match closely, will smear music signals as they are not identical. How about those designers. using only N channel mosfet pairs rather than complimentary P Channel devices? Just curious whether using larger more powerful Mosfets, and thus fewer pairs, is better in any way than let’s say 12 smaller pairs (24) per channel? Thanks for helping me to understand.
audiobrian

Showing 1 response by terry9

There was an extensive discussion on Audiogon about a year ago, when the late great Roger Modjeski hosted a thread entitled something like, "Ask an amplifier designer a question."

We discussed paralleling and matching transistors at some length.

Further to your question, I like epitaxial output transistors from Sanken (beware of counterfeits). Their higher power transistors tend to be slower, which you can absolutely hear as imprecise. Hence, if you want to hear the best your topology can do, you have to parallel.