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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.
128x128hilde45
hilde45's avatar
hilde45 OP
4,974 posts
 
Thank you George and others. You have told me what I wanted to hear, namely the truth with explanations. I did not buy this amplifier with the expectation that it would be class a for very many watts.

I think this inquiry has taught me something also about what this company is willing to say even when they know that it is being repeated into a forum.

If I have more dialogue with them I may just share it with you because it's kind of amazing how long they are willing to stick with this line of bs.
georgehifi's avatar
georgehifi
10,312 posts
 
"The IN200 works in Class A up to about 40W under 8 Ohm. The switch to Class AB is quite slow."
BTW this is BS, that they claim for a 120w rms class-B they say it is.
If it were true the thing would huge with external heat sinks and weigh 30kg+ not 12kg
https://www.atoll-electronique.com/en/products/integrated/integrated-in200sig/

Cheers George
hilde45's avatar
hilde45 OP
4,974 posts
 
It seems proved as BS. What I'm amazed at is that I confronted them via email with the evidence it couldn't be true and they just repeated the BS. I may give them one more chance to come clean but nothing really hangs on it -- I'm just a berserker-against-BS.
bubba12's avatar
bubba12
440 posts
 
Interesting thread. I've heard the Atoll and it's a great amp regardless. Paired with the Atohm speakers at AXPONA a couple years ago, they were top 3 at the show.

georgehifi's avatar
georgehifi
10,312 posts
 
It seems proved as BS. What I’m amazed at is that I confronted them via email with the evidence it couldn’t be true and they just repeated the BS.
If your 100% sure they said "The IN200 works in Class A up to about 40W under 8 Ohm" Ask them to come on here and prove it, and they'll get a new one ripped. 

But if they said
"The heat dissipation of all the heatsinks is 40w" this is probably correct. But this is a very different thing and has nothing to do about how high the Class-A ability is you’ll get into 8ohms.

Cheers George
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