2. amps-preamps
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Pass X vs XA amps sound quality in class A range

If you are one of those lucky enough and has the means to upgrade from the X (or X.5) to the XA (or XA.5) Pass labs amps, is there enough of SQ differences in low power ranges, say between 5-25W, where they all perform in class A mode, supposedly. Thanks for any insight!
tuong9906
peterayer
1,382 posts
 
Rhyno,
I just read your review of the XA60.5 in PF. Well written and informative review. Thanks for the reference.

Tuong,
They switch into Class AB, not specified in the manuals and then clip at power ratings much higher. The XA.5 series amps are very conservatively rated. They do sound much more powerful than their rated specs would suggest, though I don't know the specifics. Kent at Pass Labs may be able to answer this question.
tuong9906 OP
30 posts
 
Thanks again, you folks are first class!
unsound
7,329 posts
 
IMHO, if you think you might be pushing it from time to time for parties, etc., I wonder if buying the more powerful Class AB amp might be better. There's probably less chance of frying a tweeter with the more powerful amp, especially if guests get carried away.
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