Review on Enhanced Sound Performance: Powerbass 9-Band Car Audio EQ Sound Processor with Pre-Amp Equalizer by Maxwell Thomas

cutouts. Decent sound when it worked, but problems started after 30 days; if the stated "Warranty" has expired and Revain will direct you to the Powerbass website for warranty information. When you click the Guarantee button, the message "The requested page was not found" appears. The same applies to the "Contact Us” button. It also resulted in an unbearable hiss, and if you don't turn off the car stereo before turning off the ignition, there's an extremely loud "pop" that worried me about my amps and speakers. All in all it's rubbish.