Pyle in Wall Speaker Volume Control – Home Audio... Price: $21.06 (as of 11/04/2023 00:47 PST- Details)

EASY TO INSTALL: The Pyle in-wall stereo volume control installs in a junction box, just like a light switch. Fits standard electrical junction/gang boxes. Makes it simple and easy to direct your home amplifier audio to 2 sets of speakers
ROTARY KNOB OPERATION: The indoor outdoor speaker controller features a convenient and simple rotary knob controls which makes volume adjustments a breeze! Control up to 2 speakers with the two independent rotary faders
OPERATION: Set the amplifier’s volume control to minimum. Turn on the amp and set its volume control slightly above the normal listening level. To increase/decrease the remote speaker’s volume turn the inwall volume control clockwise/counterclockwise