This amplifier was opened and I powered the unit on. I didn't have my speakers to test and I returned my subwoofer. The original plastic is still on the LED screen. The guy I bought this from wanted to downsize his set-up and barely used it. I opened the box and powered it on. I am having an engine on my Camaro rebuilt so I am putting money into that. This is a very clean nice looking Amp, everything original is included in the box, bags, packaging, etc. I kept it as nice as previous owner. This unit does not have the Blue OS module. Selling as is, no refunds. Thank you