Amp/Preamp Asylum

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RE: My own answer to MikeCh's question, since this is my post. ;-)

Posted by Larry I on June 12, 2017 at 05:30:40:
Of course it is a matter of taste whether a particular tweek is, or is not, an improvement. But, his point should not be quickly dismissed. I sat in on a session where a designer/builder was going through the process of voicing a new linestage. He was trying various old 310 tubes. What all agreed on which particular tubes sounded the best, and as it turned out, these were the most microphonic of the lot.

I know that logically speaking, it makes sense to damp vibrations in a system and I put a number of items, such as Symposium Ultra shelves in my system. But, I have also heard trials where "more" turned out to be "less" in terms of musical quality. In a demonstration conducted by a representative from Symposium, I heard the sound deteriorate (become dry and unpleasant) when their top of the line shelf was substituted for a lower-priced model in their lineup under a CD player. Everyone, including the company representative agreed that, in this case, it was too much damping of vibration.

I agree with you that it is worthwhile experimenting with shelves, footers and tube rings, etc. It just isn't much help following anyone's particular advice on specific products because, as with any tuning device, the results are very specific to each system, circumstance and particular taste.