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Studio Channel has 50/100hz hum... change tubes?

Posted: Tue Jul 29, 2014 12:23 pm
by HomeTracks
One of my PreSonus Studio Channel Preamps has developed a low volume hum at 50hz & 100hz (after its on for a few hours). so I figure its time to change the tubes. Was thinking of upgrading to these.. any feedback would be appreciated... ... c83-tk.php