Great sound, no noise but instructions say to use 12v 'constant'. I would only do this on the Daily Driver. For show cars, you need a switchable 12V supply so your amp turns off when your car turns off. Seemed well built, oriental to understand, small enough to hide and plug and play. Attach the remote control handle to the side of the speaker enclosure and hide it in case I want to change it up a bit. However, I'm an electronics engineer by trade, so it was easy for me to install and operate. The hardest part was squeezing into the trunk of my Mustang GT.
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