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Older PURE CLASS-A Amplifiers

I am looking at some older Pure Class A amps and am curious as to are they as good as some newer amps like the Pass X150, and which ones are recommended, and have they been compared to each other anywhere? Thanks much for the recommendations.

I am considering the following PURE CLASS A amps:
Threshold T-50
Monarchy Audio SM-100 Monos
Monarchy Audio SM-70
Forte Model 4
tpk123

Showing 2 responses by flg2001

flg2001's avatar
flg2001
543 posts
 
I second Ramy here (Gryphon DM100), the only caveat would be the intensive wear that class-a design brings to output transistors, Is there any technical trad-off in that?

Regards,

Fernando
flg2001's avatar
flg2001
543 posts
 
What is your experience of intensive wear that pure Class A designs impose to output transistors? Does Class A amps were at a faster rate than a/AB?, which are the sonic implications of such "wear" in older Class A designs?
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