Bluetooth Power Amplifier Board with Subwoofer 2.1 Channel 50W x 2+100W DC 12V-24V Audio Power Amplifier Module for DIY Bluetooth Audio and Store Home Theater with Treble and Bass Control

The ZK-MT21 power amplifier board uses Bluetooth 5.0, and its transmission distance can reach 49 feet (without obstruction). At the same time, this power amplifier board has a 3.5mm AUX audio input interface. No matter what kind of input method, you can always find a method that suits you
With bass, treble, subwoofer frequency and volume control, easy to adjust volume, enjoy the music tone what you want. If you are tired of the inherent high & low bass, why not try the high & low control knob. This will make you feel like being in a movie theater
Bluetooth audio amplifier module 2.1 channel, Max output power 2X50W+100W. Speaker Matching Guide: Left & Right Channels (Stereo): 6.5 inch, 4-8 ohms, 50W each (Max. RMS); Subwoofer Channel (Bass): 8 inch, 4-8 ohms, 100W (Max. RMS)
ZK-MT21 Bluetooth power amplifier board has multiple protection mechanisms to ensure its safe operation. It has short circuit protection, over-current, over-heat, and anti-reverse protection(NOTE: It is recommended that the maximum voltage should not exceed 22V. Otherwise, overvoltage protection may be triggered, which will limit the output current and cause the maximum power to be reduced)
It adopts copper DC connector and fence type terminal. It can withstand large current, no heat, no damage to the wire. Using a universal 5.5mm * 2.1mm plug interface for power supply

Parameters

Model: ZK-MT21
Audio Input: AUX + Bluetooth
Bluetooth Version: 5.0 (Without occlusion 15M / 49 Feet)
Channel: 2.1 Stereo
Adaption Supply Voltage: 12-24V
Adaption Supply Current: More than 5A
Output Power: Max 50W×2 + 100W (Left/Right Channel + Subwoofer)
Impedance: 4-8Ohm
Speaker: 20-100W, 4-8Ohm
Protection Mechanism: Anti Reverse Connection, Overheating, Overcurrent, Short Circuit Protection

50W x 2+100W

Package Includes

Bluetooth Amplifier board * 1
Acrylic shell * 2
Knob * 5
Screwdriver * 1
DC plug adapter * 1

2.1 Channel

Extra-large Heat Sink

The extra-large heat sink can provide good heat dissipation for the continuous high-power output of the AMP, thus preventing the chip from being burned.

3.5mm AUX audio input

Easy to Connect

The universal 5.5 mm*2.1 mm DC power interface can be compatible with most of the DC power adapters. Supports 3.5 mm audio input.

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Channel Type	2.1 channel	2.1 channel	2.0 channel	2.1 channel	2.1 channel
Chip	generic chip	dual TDA7498E	dual TPA3116D2	TPA3116D2	TPA3116D2
Rated Power	50+50+100W	160+160+220W	100+100W	50+50+100W	50+50+100W
Input	BT/AUX	BT/AUX/USB	BT/AUX	BT/AUX	BT/AUX
Output	Passive Speaker+Active Sub	Passive Speaker+Active Sub	Passive Speaker	Passive Speaker+Active Sub	Passive Speaker+Active Sub
Working Voltage	DC 12-24V	DC 15-36 V	DC 12-24V	DC 12-24V	DC 12-24V
Treble and Bass Control	?	?	?	?	?