Stetsom 4-in-1 Universal Bass Knob Controller – Gain Control, Voltmeter, Amplifier On/Off, High to RCA Converter

Stetsom 4-in-1 Universal Bass Knob Controller – Gain Control, Voltmeter, Amplifier On/Off, High to RCA Converter
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The Stetsom 4-in-1 Universal Bass Knob Controller is built for people who want more control over their system without adding a bunch of separate parts. Instead of only giving you a simple bass knob, this controller combines four useful functions into one compact piece: bass level control, a built-in voltmeter, an amplifier on/off switch, and a high to RCA input converter. That makes it a smart option for customers building a cleaner install, upgrading a factory system, or just wanting more convenience right at the dash.

One of the best things about this Stetsom controller is how practical it is in a real-world system. The built-in voltmeter uses a blue LED display, so you can quickly keep an eye on voltage without adding a separate gauge. The display can also be turned on or off with a single click on the level knob, which is a nice feature for customers who want the information there when needed without always having it lit up.

Stetsom also added an amplifier on/off function that works through the same controller. By connecting the remote wires from your amplifier to the unit, you can turn the amplifier on and off with a continuous hold click on the knob. On top of that, this controller can also be used as a high to RCA input converter for factory radios that do not support RCA outputs, making it even more useful in OEM integration installs.

If you want one compact controller that helps manage bass level, monitor voltage, control amplifier power, and adapt a factory signal into RCA, the Stetsom 4-in-1 is the kind of accessory that makes a system easier to live with every day.

Key Features

4-in-1 Functions: 1) Bass knob gain control, 2) built-in voltmeter, 3) amplifier on/off switch, 4) high to RCA input converter

Bass Control: Lets you control audio system level from an easy-to-reach location

Voltmeter: Built-in precision voltmeter for quick system voltage monitoring

Display: Blue LED display with one-click on/off function

Amplifier Control: Continuous hold click on the knob can turn the amplifier on and off when remote wires are connected through the controller

Signal Integration: Works as a high to RCA input converter for factory radios without RCA outputs

Use Case: Great for cleaner installs, daily systems, and factory radio upgrades needing more control and functionality

Whether you are cleaning up a custom install, adding system control to the dash, or trying to make a factory radio work with aftermarket gear, the Stetsom 4-in-1 gives you multiple useful functions in one simple controller.