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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

Showing 3 responses by doggiehowser

doggiehowser
672 posts
 
What speakers are you using?

Perhaps what you are comparing is the difference in power and not just Class of operation.

Maybe the speakers are just too power hungry for the Class A's limited output to shine.
doggiehowser
672 posts
 
I am pretty sure the SA-103 (the replacement of the 100) and the SA-Reference that I have has a much lower output in Class A. 100W vs 300W in AB.
doggiehowser
672 posts
 
I don't think Plinius designed the SA10x and SA Reference/250 to be Class AB amps but they wanted the amps to be left on all the time, so providing that AB switch provided owners a way to leave it on 24/7 without busting the electricity bill.
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