Passive Tone Control PCB Board – 2-Channel Bass & Treble Module

Passive Tone Control Board – Precision Audio Preamp Module

Take full command of your audio output with the LOTHYE Passive Tone Control PCB Board. Designed for DIY audio enthusiasts, hobbyists, and electronics builders, this compact 2-channel preamp module lets you independently adjust total volume, treble, and bass for a customized listening experience — no power supply required for the tone circuit itself.

Whether you're building a custom speaker system, upgrading a home amplifier, or prototyping an audio project, this passive tone board delivers clean, accurate signal shaping in a small, easy-to-integrate form factor. Made in Mainland China.

Key Features

• 3 Adjustable Controls: Independent knobs for total volume, treble, and bass
• 2-Channel Stereo: Dual-channel design for full left/right audio control
• Passive Circuit: No active power needed for tone shaping — reduces noise and distortion
• Compact Size: Appearance size of 56.28mm — fits easily into enclosures and DIY builds
• Knob Spacing: 22.5mm between knobs for comfortable panel mounting
• Socket Type: XH2.54~3P connectors for reliable, secure wiring
• PCB Construction: Clean board layout for easy soldering and integration
• Brand: LOTHYE | Condition: New

Specifications

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Frequently Asked Questions

Q: Does this passive tone control board require an external power supply?

A: No — because it is a passive tone board, the tone shaping circuit itself does not require a dedicated power supply. It operates on the signal passing through it, making it ideal for low-noise DIY audio preamp builds and amplifier projects.

Q: What audio parameters can I adjust with this PCB board?

A: The LOTHYE passive tone control board allows independent adjustment of total volume, treble (high frequencies), and bass (low frequencies), giving you comprehensive tone control across a 2-channel stereo signal path.

Q: What connector type does this board use, and is it easy to wire?

A: The board uses XH2.54~3P sockets, which are standard in DIY electronics projects. These connectors are secure, widely compatible, and straightforward to wire, making integration into custom amplifier builds or speaker systems simple and reliable.

Q: What is the size of this tone control PCB module?

A: The board measures 56.28mm in appearance size, with a knob spacing of 22.5mm. Its compact footprint makes it suitable for panel mounting in enclosures of various sizes.