• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

How much tube hiss is normal?

There should be no hiss heard from listening position with volume pot set to position for normal listening. If you still hear hiss, your preamp (or power amp need repair).
 
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