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XH-A901 Digital Audio Amplifier Tone Control Board — Treble & Bass Adjustment Preamp
XH-A901 Digital Audio Amplifier Tone Control Board Treble & Bass Adjustment Preamp
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XH-A901 Digital Audio Amplifier Tone Control Board — Treble & Bass Adjustment
The XH-A901 tone control board is a standalone audio preamplifier and tone control module that adds independent treble and bass adjustment to any audio amplifier chain. Insert it between your audio source and power amplifier to shape the frequency response to your preference — boost bass for fuller sound, cut treble to tame harsh recordings, or set flat for reference listening. Suitable for DIY amplifier builds, active speaker systems, and home audio upgrades.
Key Specifications
| Parameter | Value |
|---|---|
| Model | XH-A901 |
| Function | Tone control preamp (treble + bass independent adjustment) |
| Supply Voltage | DC 5V – 12V (check variant) |
| Input | Stereo RCA or 3.5mm (check board version) |
| Output | Stereo line-level output |
| Treble Adjustment | Onboard potentiometer (±10dB typical) |
| Bass Adjustment | Onboard potentiometer (±10dB typical) |
| Channel | Stereo (2-channel) |
| Origin | CN |
Why Add a Tone Control Stage?
- Compensate for room acoustics — Boost bass in acoustically dead rooms; cut treble in rooms with excessive high-frequency reflections
- Source matching — Adjust for the tonal character of different sources (vinyl, streaming, Bluetooth) without changing amplifier settings
- Speaker compensation — Tailor the frequency response to complement your specific speaker’s characteristics
- Simple integration — Line-level in/out; insert between any source and power amplifier with no modification to existing equipment
- Compact form factor — Small PCB fits inside amplifier enclosures or mounts on a panel with the potentiometer shafts exposed
Typical Applications
- DIY Class D / Class AB amplifier tone control stage
- Active speaker system preamp with tone shaping
- Home theater subwoofer bass boost control
- Guitar and instrument amplifier tone stack replacement
- Vintage amplifier tone control restoration
Frequently Asked Questions
Q: Does this board include a volume control?
The XH-A901 focuses on tone control (treble and bass). Some versions include a volume potentiometer — check the product images for your specific board revision. If a separate volume control is needed, add a stereo potentiometer (10k–50kΩ log taper) at the input.
Q: What is the signal-to-noise ratio?
Specific SNR data varies by board revision. For best noise performance, use a well-regulated, low-ripple DC supply and keep signal wiring short and away from the power input traces.
Package Contents
- 1× XH-A901 Tone Control Board
