# Bluetooth 5.0, 2.1, TPA3116 amplifier, 2x50W, 1x100W

- Page: https://sigmanortec.ro/en/bluetooth-50-21-tpa3116-amplifier-2x50w-1x100w
- Price: 195.35 RON
- Availability: In stock; 1-2 zile
- Reference: 9315 · EAN: 5940214533299
- Category: Mechatronics and IoT > Sensors and Modules > Audio and Sound > Audio Amplifiers
- Specifications: Type: Amplifier; tension: AD; Power: Over 20W
- Package (shipping data): 0.185 kg
- Updated: 2026-09-14
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 04:50 (Europe/Bucharest)

## Description

2.1 amplifier with Bluetooth 5.0 and AUX input, ideal for stereo speakers and subwoofer in compact audio projects. Delivers 2x50W for left and right channels and 1x100W for bass, operates at 12-24VDC, includes short-circuit, overcurrent and overheating protections, and copper terminals ensure safe contact and high current.
3-channel amplifier (2.1) with Bluetooth 5.0 and AUX-IN.
This amplifier offers two 50W channels and a 100W Subwoofer channel.
It offers protection against short circuiting, reverse connection and excessive temperature.
The connectors and terminals are made of copper to avoid their overheating and to be able to withstand a higher current.
Specifications:
Model: Zk-MT21
Supply voltage: 12 - 24VDC ( do not connect to 24V batteries because they exceed the maximum voltage threshold when charged )
Current: 5A
Bluetooth version: 5.0
Input: AUX and Bluetooth
Channels: 2.1
Input sensitivity: 500mV
Speakers (speakers): 20-100W, 4-8Ohm
R&L output power: 50W
Subwoofer output power: 100W
Protection: anti reverse, overheat, overcurrent, short-circuit
Dimensions mm: 93 x 90 x 22mm