YS-MT21 2.1-Channel Audio Power Amplifier 50Wx2+100W Subwoofer BT5.0 Module
YS-MT21
$27.99
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YS-MT21 2.1-Channel Audio Power Amplifier 50Wx2+100W Subwoofer BT5.0 Module
$27.99
The YS-MT21 is a 2.1-channel digital audio power amplifier module that delivers up to 2x50W to left and right speakers and under 100W to a subwoofer. It is for DIY speaker builders and home audio setups needing AUX and Bluetooth 5.0 wireless input with bass, treble, subwoofer frequency and volume controls.
Key features
- 2.1-channel output – powers left and right speakers at under 50W each plus a subwoofer at under 100W.
- Bluetooth 5.0 and AUX input – connects wirelessly up to 15 meters unobstructed or through a wired AUX connection.
- Sound controls – adjust bass, treble, subwoofer frequency and volume with the multifunctional rotary encoder knob.
- Protection circuits – reverse connection, overheat, overcurrent and short circuit protection help prevent damage.
- DC 12–24V power supply – works with a 5A or higher power supply; cannot connect to 24V battery packs.
Specifications
| Model | YS-MT21 |
|---|---|
| Channels | 2.1 |
| Bluetooth version | 5.0 |
| Input method | AUX + BT |
| Power supply | DC 12–24V / 5A or higher |
| Output power | Left and right channels under 50W; subwoofer under 100W |
| Speaker impedance | 4–8 ohms |
| Speaker power range | 20–100W |
| Input sensitivity | 500mV |
| Protection | Reverse connection, overheat, overcurrent, short circuit |
| Material | ABS + metal |
| Dimensions | Approx. 110 x 100 x 30 mm / 4.33 x 3.94 x 1.18 inch |
| Available options | YS-MT21, YS-502MT, YS-TB21 |
What's in the box
- 1 x 2.1 Channel BT Amplifier Board
- 1 x Screwdriver
- 1 x Connector
Ideal for
- DIY speaker projects
- Home theater audio systems
- Mall and shop speaker setups
- Custom audio installations
FAQ
Does it work with 24V battery packs?
No. It supports DC 12–24V power supplies but cannot connect to 24V battery packs.
What speakers can I connect?
Speakers rated 20–100W with 4–8 ohm impedance.
Does it have Bluetooth?
Yes, Bluetooth 5.0 with an unobstructed range of up to 15 meters.
Is an antenna included?
No. An external antenna and mount are supported but not included and must be purchased separately.
What protection does it have?
Reverse connection, overheat, overcurrent and short circuit protection.