Just picked up a new (to me) O.G. Stern Spider-Man. Sounds and music are pretty low. Jacked it all the way up in adjustments. Still low. Is there a master volume somewhere?
Original Speakers or upgraded?? Some replacement speaker kits come with a secondary volume adjustment.
On the system menu, try going into utilities->reset->reset factory settings and that will set everything to factory levels in case there's some setting that's causing this.
Also, verify that it has the latest software on it. 2.00 is the most recent:
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