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Why do I like Class AB better than Class A?

So I just purchased a Plinius SA 100 MKIII, and have had 2 listening sessions comparing both with the toggle switch. To me clearly the AB is more detailed and focused, the A is warm but a little fuzzy and bloated, although I would give it a slight nod on just vocal songs. Am I just not use to the sound as this is my first A amp or have I not let it properly warm up for class A (1hour or so).
Don't get me wrong, i love the amp, great bottom end slam but I don't hear the holy grail from Class A. Thanks in advance for the input guys.
barfbag
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onhwy61's avatar
onhwy61
5,146 posts
 
Are you sure you're not responding to one amp being silver and the other black? How you're able to leap from a quick listen sonic preference to a clear cut distinction between amplifier operating states is beyond me.
jim_swantko
301 posts
 
My experience with Class-A operation (mostly with Parasound JC1's) is very different than yours. My soundstage becomes MORE defined, not less. It also grows in all directions.

If it weren't for the heat I would never use the low-bias setting.
ngjockey
1,042 posts
 
I have a couple of the same amps. The difference between those modes of operation can be subtle, depending on the recording and the volume. Patience... you'll hear it. After a while, you'll never want to listen in anything other than class A. Probably getting conditioned to the "laid-back" character of the amp as well.
syntax's avatar
syntax
2,193 posts
 
Sounds like God is telling you to upgrade ....
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