I have had the EP500 for over a month now. The bass has been great...I have been turning it off after each use. Last time I forgot to power it off in the back it stayed on with no input for about 24 hours..I reached over in the back to touch the metal amp plate...WOW it is pretty dam hot..like 150 F just a hair under burining the finger...

Are your EP500's running that hot with no input? I cannot imagine leaving it on all the time this hot???

Thanks Vince