4in1 – Universal Bass Knob with Voltmeter, Gain Control + On/Off Switch + High to RCA Input Converter, Blue LED Display, One Touch On/Off Display, Continuous Touch On/Off Amplifier

4in1 Product: 1) Bass Knob Gain Control, 2) Built-in Voltmeter, 3) On/Off Amplifier Switch, 4) High to RCA input converter
TheGain Control was developed with all the essential features you need to control your audio system right at your fingertips, very convenient.
precision Built-in Voltmeter. It comes with a blue LED display that you can turn on and off with just one click on the level knob whenever you feel necessary
Very convenient feature On/Off Amplifier Switch, you will be able to connect the remote wires from your amplifier to theGain Control and conveniently turn your amplifier On and Off with a simple continuous hold click on the level knob
As if that was not enough, can offer you even more. Besides the bass knob, voltmeter, and remote on/off features, theGain Control can also be used as an audio input converter for car audio factory players that do not support RCA connections.1