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RE: Upgrade of a tube amplifier

Posted by BofService (A) on March 28, 2014 at 10:36:01

In Reply to: Upgrade of a tube amplifier posted by akolegov on March 28, 2014 at 08:29:04:

I would agree with Tre, but you may not have the skill/knowledge to be able to make that assessment, or to fix anything you find wrong. Fortunately it is easy enough to find out if the K40Ys will help through experimentation: ($22, http://www.ebay.com/itm/RARE-0-47uF-630V-Matched-pairs-PIO-Capacitors-K40Y-9-Lot-of-2-NOS-/231000898989?pt=LH_DefaultDomain_0&hash=item35c8b9fdad)

Those black caps in your amp are labeled "MPT" so are probably polypropylene film, generally considered a "good" type of construction for an audio cap. But each input/amp/speaker combination has its own strengths and weaknesses. If you try the KY40s or other paper in oil types and it still sounds too bright for your tastes then you should probably look toward Tre's suggestion.

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