XY-HT21MAX 2.1 Channel Bluetooth Amplifier Board for Audio Repair Projects

Features:

1. Dual core design, equipped with TPA3223 chip, providing more stable and clear sound quality.
2. Supports BT/USB/AUX multi-source input to meet diverse audio needs.
3.2.1 Channel high-power output, powerful combination of left and right subwoofers.
4. Equipped with a total volume knob, easy to operate, and supports multifunctional touch control.
5. High quality component materials, low loss inductors+black gold capacitors, more reliable performance.

Parameter:

Product Name: 2.1 Channel BT Digital Audio Amplifier Board
Product Model: XY-HT21MAX
Power supply: DC 12-42V/10A or above
Audio input: BT/AUX/U drive
BT audio decoding: AAC SBC
USB lossless decoding: WAV FLAC APE MP3
Channel: Left and Right Channels
Output power (maximum):
DC 12V:
Left and right channels: 10W+ 10W@8 Ω;20W+ 20W@4 Ω
Subwoofer: 10W@8 Ω; 20W@4 Ω; 32W@2 Ω
DC 24V:
Left and right channels: 30W+ 30W@8 Ω;70W+ 70W@4 Ω
Subwoofer: 30W@8 Ω; 70W@4 Ω; 150W@2 Ω
DC 36V:
Left and right channels: 80W+ 80W@8 Ω;160W+ 160W@4 Ω
Subwoofer: 80W@8 Ω; 160W@4 Ω; 350W@2 Ω
DC 40V:
Left and right channels: 100W+ 100W@8 Ω;200W+ 200W@4 Ω
Subwoofer: 100W@8 Ω; 200W@4 Ω; 400W@2 Ω

Package Include:

1X power amplifier board
1X screwdriver
Note: The product is shipped without assembly, and the accessories need to be disassembled and shipped by oneself.

[FAQ]

❓ Q1: Is 400W RMS or peak?
✅ Peak. See the voltage table for RMS values.

❓ Q2: What power supply?
✅ DC 12-42V / ≥10A (not included).

❓ Q3: USB playback?
✅ Yes — MP3/WAV/FLAC/APE.

❓ Q4: Bluetooth version?
✅ 5.0 with AAC/SBC.

❓ Q5: What speakers?
✅ L/R: 4-8Ω, Sub: 2-8Ω.

❓ Q6: Need assembly?
✅ Yes, unassembled. Screwdriver included.

❓ Q7: Any protection?
✅ Overcurrent / thermal / short circuit.

❓ Q8: Bass/treble adjustable?
✅ Yes, independent potentiometers.