PYLE PVC3 High Power In-Wall Stereo Volume Control with Built In Relay Circuit (White)

I purchased 3 of these even after reading the other review here. Wish I'd listened. This isn't my first audio install, but the single page of instructions that shows diagrams for four different models (apparently all but this one) is useless. The...

Looks cool, however this volume control does NOT support stereo sound as advertised. Terminal markings and included wiring diagrams are incomprehensible. No instructions online at Pyle's website. The company's customer service emailed me a wiring...