2. amps-preamps
  3. 162022-139155

When does my class Atoll IN200 A/B integrated switch from class A to class B?

I have an Atoll IN200 integrated amp (earlier version of this: https://www.atoll-electronique.com/en/products/integrated/integrated-in200sig/)

Having read a lot of praise about class A power, I’m wondering how to tell from specs when my integrated likely needs to switch from class A to class B?

The reason I’m curious is that I’m still wondering how my speakers might sound with a pure class A amplifier (such as Pass, etc.) but perhaps the integrated I have is already demonstrating much of that if there is a long enough delivery of class A power from it already? My speakers are 8 ohms, 87 db sensitivity, standmounts.

I apologize if this question is too simple; I hope I’ve posed it clearly.

P.S. This is not about dissatisfaction with my integrated or other gear (I have tubes, too). It's really just part of a longer term attempt to understand how different power sources change the character of a system, particularly the speakers.
hilde45

Showing 1 response by oldhvymec

oldhvymec
5,101 posts
 
I know this the higher, the transition point, the hotter the box runs..
Normally until they hit that tipping point they start cooling off. Idling they would run hotter, why the bias is set higher, the tipping point..they cool off until you REALLY push them...they heat up again.. Get yourself a cheap thermal gun, you might be surprised what you can learn from one, and if the left and right are biased the same... Could be load induced, but interesting, none the less.

Regards
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