XH-M802 Passive Tone Board – Treble, Bass & Volume PCB

XH-M802 Passive Tone Board – 2-Channel Treble, Bass & Volume Control

Take full command of your audio signal with the XH-M802 Passive Tone Control Board. Designed for DIY audio enthusiasts and electronics hobbyists, this compact PCB lets you independently adjust treble, bass, and overall volume before the signal reaches your amplifier board — giving you cleaner, more refined sound output tailored to your setup.

Unlike active tone circuits, this passive tuning board requires no external power supply. It uses an RC (resistor-capacitor) filter network to sculpt the frequency response of your audio signal, filtering out unwanted highs or lows before amplification. It's an ideal front-end solution for subwoofer projects, custom speaker builds, or any 2-channel amplifier system.

Made in Mainland China.

Key Features

• Passive Design: No power supply needed — works entirely through the RC capacitor filter network
• 3-Knob Control: Independent adjustments for treble, bass, and master volume
• 2-Channel Stereo: Supports stereo left/right audio signal paths
• XH2.54-3P Connector: Standard socket type for easy integration with amplifier boards
• Compact Form Factor: Measures just 56 × 28 mm — fits into tight enclosures and DIY builds
• Metal construction for durability and stable knob operation
• Knob spacing: 22.5 mm for comfortable manual adjustment

Specifications

What's in the Box

• 1× XH-M802 Passive Tone Control PCB Board

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Frequently Asked Questions

Q: Does the XH-M802 passive tone board require a power supply to operate?

A: No. The XH-M802 is a passive tone control board, meaning it requires no external power supply. It uses an RC (resistor-capacitor) filter network to shape the audio signal. Please note that because it is passive, the processed signal volume will be somewhat lower than the input, which is normal — your downstream amplifier board compensates for this.

Q: What amplifier boards is the XH-M802 tone board compatible with?

A: The XH-M802 uses a standard XH2.54-3P socket connector, making it compatible with a wide range of DIY amplifier boards and subwoofer projects that accept this connector type. It works as a pre-amplifier tone stage — you connect your audio source to the tone board first, then route the output to your amplifier board for boosting.

Q: Can this board control treble and bass independently?

A: Yes. The XH-M802 features three separate knobs allowing you to independently adjust treble (high frequencies), bass (low frequencies), and overall master volume. This gives you precise tonal control over your audio signal before it is amplified.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.