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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 2 responses by erik_squires

erik_squires
16,560 posts
 
Pass is a good example, because while it has many fans, their uber simple design does not win everyone over for sound quality.

I think if the idea of transistor smearing was accurate or a convincing win no one would buy any amp that used more than one pair. Instead these types of designs, and tube equivalents, remain a niche sound.

I encourage the OP to find a FirstWatt kit and make his own, see what conclusions he comes to. :)

Best,

Erik
erik_squires
16,560 posts
 
If this is true, we've never seen it born out in distortion, square wave or any other measurements. 

To the contrary, ultra simple circuits often have the most "color" added by distortion or high output impedance.
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