Review on 🎚️ CHELINK Universal Remote Amplifier Level Controller - RCA Bass Knob for Car Sub Amp Volume Control by Michael Robinson

This pen worked great for the first few days and then started to carve out the base. My subwoofers sounded like they were about to explode. I took the RCAs out of the amp, took them off the handle and hooked them up to my stereo and the subwoofers worked like a champ. I don't know if I just received a defective pen because it worked great the first time I bought it. But now it's not. My experience with this product was not great.