Hi-Fi Stereo Pre-Amplifier and Bass Treble Control Board with Active Volume (Assembled)
This assembled board is designed for stereo audio signal conditioning with active volume control, bass and treble adjustment, and onboard power supply.
Working Voltage:
Input: 12-0-12 VAC, 1 A to 2 A (step-down transformer)
Onboard rectifier and regulators generate required DC supply
Signal Processing:
Active volume control (linear response compared to passive controls)
Bass and treble adjustment: up to ±15 dB (depends on component values)
Signal gain: up to 20 dB (depends on configuration)
Op-Amp Configuration:
Separate op-amp IC used for each channel
Designed for improved channel separation and reduced crosstalk
Features:
RF input filter for reduction of unwanted noise
Onboard regulated power supply with rectifier
JST / Relimate connectors (2.54 mm pitch) for input, output, and power connections
Board Specifications:
PCB dimensions: 115 mm × 80 mm
Compact layout for enclosure integration
Construction:
Fully assembled board
Uses through-hole components
Configuration:
Compatible with audio amplifiers using ICs or discrete transistors
Requires proper transformer connection for operation
Intended Use:
Pre-amplifier stage for audio amplifier systems
Bass and treble control in home audio systems
Integration in stereo amplifier and DIY audio projects
