Dual Channel Stereo Balanced Input Gain BTL Bridging HiFi Preamplifier Board with 4558D Operational Amplifier

Dual Channel Stereo Balanced Input Gain BTL Bridging HiFi Preamplifier Board with 4558D Operational Amplifier

Description:
- This board comes with an operational amplifier socket, which can be replaced with different operational amplifiers.
- This board is equipped with a gain sensitivity toggle switch for volume amplification, which can meet the needs of different power amplifier boards.
- This board is equipped with control switches for stereo, mono input dual channel output, and BTL bridge output, making it convenient for users to use.
- The sensitivity gain switch of this board increases sound when turned up, and decreases sound when turned down. The bottom toggle switch is turned to the top for BTL bridging, to the middle for mono input and dual channel output, and to the bottom for stereo output.
- This board is equipped with a potentiometer to control the volume interface. It is recommended to use B10K-B50K potentiometers. If not needed, the IN and OUT pins of the potentiometer interface can be short circuited.

Specification:
- PCB size: 108 x 76mm
- Power supply voltage: dual DC ±12V ~ ±15V (1A)

Package Included:
- 1 x Preamplifier Board

Note:
- The circuit board of this board comes in two colors, blue and purple, and is shipped randomly. Thanks for your understanding.