SPECIFICATIONS

Amplifier Chip: Domestic Amplifier Chip

Bluetooth Version: 5.0 (Unobstructed, 15-meter range)

Brand Name: wuzhi

Certification: CE

Control Method: Push button

Feature 1: 2.1 channel bluetooth amplifier board

Feature 10: home theater power amplifier board

Feature 11: 2.1 channel class d amplifier

Feature 12: compact bluetooth amplifier board

Feature 2: 2.1 bluetooth amplifier module

Feature 3: 50W 100W subwoofer amplifier

Feature 4: audio amplifier board DIY

Feature 5: subwoofer power amplifier board

Feature 6: high power bluetooth amplifier

Feature 7: 50W+50W+100W bluetooth 5.0 amplifier

Feature 8: 2.1 channel amp with bass treble control

Feature 9: 12V 24V audio amplifier module

High-concerned chemical: none

Input Method: AUX + Bluetooth

Input Sensitivity: 500mV

Material: Plastic,Metal

Maximum Power Per Channel: 100 W

Model Number: MT21

Number of Channels: 2.1 Channels

Origin: Mainland China

Output Power: 200W,Left and Right Channels <50W, Subwoofer <100W

Package: Yes

Parts: Amplifier board

Power Supply: DC12~24V/5A or higher (Cannot be connected to a 24V battery pack)

Product Dimensions: 93mm*90mm*22mm

Product Name: 2.1 Channel Bluetooth Audio Amplifier Module

Product Weight: Approx. 185g (including packaging)

Protection Mechanism 1: Reverse Connection Protection

Protection Mechanism 2: Overheat Protection

Protection Mechanism 3: Overcurrent Protection

Protection Mechanism 4: Short Circuit Protection

Speakers: 20~100 W, 4-8Ω

Surround sound channel configuration: Others

MT21 2.1 Channel Bluetooth 5.0 Audio Amplifier Board 100W Subwoofer 50W*2 L/R Stereo Amp Module Bass Treble Control AUX Input DC12-24V for Home Speaker DIY

Features:

1. High-quality materials ensure quality.

2. High-performance 100W+50W+50W high-fidelity Bluetooth amplifier with a mature and stable design, delivering pure sound quality. An economical 2.1 amplifier!

3. Subwoofer + Left Channel + Right Channel, with subwoofer output and bass/treble adjustment for a cool and powerful sound.

4. Exquisite design and simple operation.

5. Wide range of applications.

Specifications:

Product Name: 2.1 Channel Bluetooth Audio Amplifier Module

Product Model: MT21

Bluetooth Version: 5.0 (Unobstructed, 15-meter range)

Input Sensitivity: 500mV

Input Method: AUX + Bluetooth

Number of Channels: 2.1 Channels

Amplifier Chip: Domestic Amplifier Chip

Power Supply: DC12~24V/5A or higher (Cannot be connected to a 24V battery pack)

Speakers: 20~100 W, 4-8Ω

Output Power: Left and Right Channels <50W, Subwoofer <100W

Protection Mechanism: Reverse Connection Protection, Overheat Protection, Overcurrent Protection, Short Circuit Protection

Product Dimensions: 93mm*90mm*22mm

Product Weight: Approx. 185g (including packaging)

Note:

Sufficient output power will only be achieved when the audio input and power supply voltage/current are sufficient!!!

The higher the power supply voltage, the greater the output power; the lower the speaker impedance, the greater the output power!!! Please ensure that the power supply wattage is greater than the actual operating power of the amplifier!!!

Real-World Applications (Use Cases):

• DIY Home Theater System – Build your own 2.1 surround sound system using a passive subwoofer and two satellite speakers. Perfect for movie nights and gaming. The 100W subwoofer channel provides cinematic bass without needing a separate powered sub.

• TV & Projector Sound Upgrade – Replace your TV‘s tinny built-in speakers. Connect the amplifier to your TV’s headphone or RCA audio output via AUX cable, add a pair of bookshelf speakers and a small subwoofer – instant home cinema upgrade.

• Computer Desktop Sound System – Build a compact 2.1 system for your PC. Left/right speakers on your desk, a small subwoofer under the desk. Bluetooth connectivity lets you stream from your phone without switching computer outputs.

• Convert Old Passive Speakers – Have an old pair of stereo speakers collecting dust? Turn them into a modern Bluetooth speaker system. Add a passive subwoofer (or leave it out and use only the stereo channels) for a complete 2.0 system.

• Outdoor / Patio Speaker Build – Build a weather-resistant (with proper enclosure) 2.1 speaker system for your backyard, pool area, or workshop. Bluetooth 5.0 offers stable connection up to 15 meters.

• Garage / Workshop Audio – Create a rugged sound system for your workspace. Use inexpensive 4-8Ω speakers, power the board from a 12-24V DC supply (e.g., an old laptop power brick), and enjoy music while you work.

• DIY Soundbar – Design and build your own soundbar enclosure with left, right, and subwoofer channels all driven by a single board. The compact dimensions make it easy to fit into narrow enclosures.

• Car Audio Retrofit (with caution) – While designed for DC 12-24V, you can use it in a car with a 12V battery (not 24V). Ensure your car‘s electrical system is stable. Note: The board does not include a remote control or signal-sense turn-on – manual power switching required.

• Boat / RV Entertainment – For 12V battery systems, this amplifier is an affordable way to add music to your boat or RV. Add Bluetooth streaming and subwoofer support without installing a full car stereo head unit.

• Educational Projects – Excellent for teaching audio electronics, amplifier design, and speaker crossover basics in university or vocational programs.

Package Included:

Amplifier Board *1