If the amp's response drifts and sounds veiled at times as you've mentioned, something might be wrong with the amp or other components. Did you have it checked? Great idea to bring in another amp to compare. What are the other devices in the system? Any tubes?
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.
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.
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