Stereo Amplifier Module 2-channel Pre-amp Preamplifier Tone Board

A 4-channel stereo preamplifier and tone control board with independent bass, treble, and balance adjustment — providing audio signal conditioning before your power amplifier stage. Adds proper tone shaping, volume control, and input switching to any DIY hi-fi or audio system build.

🔹 Key Applications

• Hi-fi preamplifier stage in DIY amplifier systems
• Input selector and volume control for multi-source audio
• Tone correction in custom speaker builds
• Guitar effects processor input stage
• Studio monitoring volume control
• Arcade machine audio level and tone control

🔹 Why Choose This Module?

• Independent bass and treble control — tune sound to your room
• Balance control — correct channel level differences
• 4-channel (stereo) design — handles left and right signals
• Low-noise opamp design — transparent signal path
• Compatible with any power amplifier stage

🔹 Technical Specifications

• Channels: 2 CH(stereo L/R )
• Controls: Bass, Treble, Balance, Volume
• Supply Voltage: 9 V – 12 V DC
• Input Impedance: High (suitable for line-level sources)
• Output: Line-level to power amplifier input

🔹 What's Included

1 × 2-Channel Stereo Preamplifier Tone Control Board

🔹 Pro Tip

💡 Place this board between your audio source and power amplifier. Set bass and treble flat (centre position) first, then adjust to taste. Ensure the signal ground from your source, preamp, and power amplifier all connect at a single star-ground point to eliminate hum loops.

⚠️ Note: Always ensure proper heat dissipation and correct voltage configuration before powering connected devices.