Hi-fi Stereo Bass Treble with Active Volume – PCB only

Hi-Fi Stereo Bass Treble Control with Active Volume PCB Board (Bare PCB)

This PCB is designed for building a stereo pre-amplifier with active volume control, bass and treble adjustment, and onboard power supply rectification. Performance depends on components used and assembly quality.

Working Voltage:

• Input: 12-0-12 VAC, 1 A to 2 A (step-down transformer recommended)
• 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 Compatibility:

• Supports NE5532, JRC4558, TL072, NJM4560, LM833, OPA2160
• Separate op-amp configuration for each channel

Features:

• RF input filter for reduction of unwanted noise
• Onboard regulated power supply section
• Suitable for powering external modules such as Bluetooth or USB audio players (depends on configuration)

Connectors:

• 2.54 mm JST / Relimate connectors for input, output, and power connections

Board Specifications:

• PCB dimensions: 115 mm × 80 mm
• Compact layout for enclosure integration

Construction:

• Bare PCB (components not included)
• Designed for through-hole components

Configuration:

• Compatible with audio amplifiers using ICs or discrete transistors
• Final performance depends on component selection and assembly quality

Included Support Material:

• Bill of Materials (BOM) included
• Assembly and connection instructions provided

Intended Use:

• Pre-amplifier stage for audio amplifier systems
• Bass and treble control in stereo audio systems
• Integration with amplifier and audio source modules
• DIY audio and signal processing projects