Volume Control Board with Motor Potentiometer Support Remote Control DIY Audio Accessory for Power Amplifier Preamplifier

Volume Control Board with Motor Potentiometer Support Remote Control DIY Audio Accessory for Power Amplifier Preamplifier

Features:
- It can be controlled manually or remotely.
- The audio signal circuit is completely isolated from the control circuit, without interference.
- Dedicated MCU controller + motor driver.
- Wide voltage range, both AC and DC power supply are available, and the motherboard is equipped with a polarity automatic conversion circuit.
- Building block style 4-channel switching module, easy to assemble or maintain.
- Dual voltage regulator power supply, with one regulator for high power and one regulator for low power, ensuring stable and reliable operation.
- Expand freely, plug and play.
- The motherboard is equipped with dual color LED indicators for motor forward and reverse rotation, making the working status clear at a glance.
- 2 motor speed, during coarse adjustment, every time the key is pressed and rotated by 15 degrees, the angular volume changes significantly; When fine-tuning, each press of the key rotates 4 degrees, with a small angle change, suitable for fine adjustment.

Function:
- Modify the old amplifier without remote control function to add functions such as multi-channel audio input selection (audio switch board) and volume remote control.
- The new DIY installation with this system can achieve multifunctional audio source switching (audio switch board) and volume control functions. This system comes with automatic volume reset to zero.
- As an external volume controller, for example, some TVs or DAC decoders cannot adjust the volume output. Adding this system can easily solve the volume control problem.
- The pure amplifier front-end and other devices without volume control function can add this system to achieve sound control function.

Specification:
- Power supply requirement: AC9V-12V or DC12V-15V
- Motor motherboard size: 12 x 4.95cm
- 4-Channel audio switch board size: 5.5 x 2.7cm (optional)
- Power supply switch board size: 3.25 x 4.95cm (optional)
- Supported audio source device: 4 (stereo RCA interface)
- Input impedance: 50K (20Hz - 20kHz)
- Frequency response: 20Hz - 20kHz
- Volume control method: manual + remote control
- Audio source switch control method: button/remote control
- Power supply switch board control method: button/remote control

Package Included:
- 1 x Volume Control Board
- 1 x Remote Control

Precaution about power supply control board:
- Without purchasing a power control board, this system can also be manually or remotely turned on and off, but only the power on and off of this system can be controlled.
- If a power supply control board is added, other appliances can be synchronously and remotely controlled to turn on and off together. This refers to other appliances that are usually powered by the rear stage amplifier. After adding the control board, they can be turned on and off synchronously with this system.
- When the power control board is not added, your amplifier's power supply is plugged into a 220V socket (uncontrolled 220V). After adding the control board, your amplifier's power supply is plugged into the power control board and operates at 220V voltage (but it is a controlled 220V).