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McIntosh 452/601 to replace Pass X350.5, good?

I currently have Pass Labs X350.5, speaker is Dynaudio C4 signature.

Generally I love X350.5, doing very good job most of the time. However, it may sound veiled sometimes (usually after 3-4 hours of continuous listening ). Initially I guess it was the heat, because of too much bias, so I start to play with bias adjustment also DC offset etc, and then realized it's so difficult to deal with. Basically it's almost impossible to make bias A and B to be equal, and also the offsets will drift all the time...

I do believe this mismatch bias and drifting DC is the main course of veiled sounding, right?

Anyway, I am thinking McIntosh have an output transformer, which at least will always have 0 DC, should sound clearer? Will it be a good match for the C4 speakers?

I listen to all kinds of music, but classical symphonies is the most concerned.

Thanks for your post.
winstonwang

Showing 1 response by zd542

zd542
5,339 posts
 
"Anyway, I am thinking McIntosh have an output transformer, which at least will always have 0 DC, should sound clearer? Will it be a good match for the C4 speakers?"

Thats not a good enough reason to base a purchase on. At the very least, you must demo the McIntosh on your equipment first.

As far as bias goes, something may be wrong with your amp. I never had to adjust bias on any Pass amp that I ever had. Give them a call and see what they say. Of all the MOSFET amp's, Pass is the cleanest.
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