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Actually difference between class A and AB?

Class A amp sounds like holy grail of HIFI world.
But class A amp are much heavier, more expensive and rarer than class AB or class B design. Few can afford 100 LB weight of a 2-channel 100w/c amp.

Is there any actual difference between class A and class AB when listening to actual music? And what is that difference?
hl10027

Showing 2 responses by magfan

magfan
1,583 posts
 
Yes, the A/A-B debate verges on the '3rd rail' of hifi. Toss in NFB and it is downright toxic.

However, would anyone consider it true that the best A amp is better than an inferior A/B design...and the reverse? Meiwan's 'individual design' remark is correct, IMO.
magfan
1,583 posts
 
The amp that sounds better to YOU is better, regardless of 'class'.

As Stanwal aludes, 'a' amps run HOT. If you can lift a 100x2 'a' amp, you are either real strong or don't buy it.

All things being equal, you'd have trouble telling the best of 'em apart. until you get the electric bill.
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