ZK-R21E Volume Indicator bluetooth Audio Power Amplifier Board 2.1 Channel Subwoofer Module

1. 2.1 channel bluetooth audio amplifier

2. 50W+50W+100W subwoofer

3. Protection mechanism: over temperature, over current, short circuit, anti-static protection

4. Features: Support wuzhi Audio APP. Modify the bluetooth name, password settings, prompts

Sound volume adjustment, on/off prompt sound, sleep aid, sound effect selection + custom sound effect, U disk playlist, volume indicator brightness adjustment.

5. Cool indicator with high-definition sound quality

Model: ZK-R21E

Name: 2.1 channel 50W+50W+100W subwoofer stereo bluetooth audio power amplifier

Power amplifier chip: domestic chip

Bluetooth version: 5.1

Audio input: Bluetooth+AUX+U disk+USB sound card

Audio output: left channel 50W + right channel 50W + subwoofer 100W

Adapter power supply: DC9-24V, ≥7A (can not be connected to AC)

Adapter speakers: left and right channels 15-50W, 4-8Ω; subwoofer 30-100W, 4-8Ω

Volume adjustment: multi-function knob, 360-degree stepless tuning, with volume level indication.

Click: Play/Pause

Double click: mode switch (Bluetooth/U disk/AUX)

Press and hold for 1 second: turn on/off

Rotate: adjust the volume

Protection mechanism: over temperature, over current, short circuit, anti-static protection

Features: Support Wuzhi Audio APP. Modify the bluetooth name, password settings, prompts

Sound volume adjustment, on/off prompt sound, sleep aid, sound effect selection + custom sound effect, U disk playlist, volume indicator brightness adjustment.

Product size: 81x81x37mm

Product weight: net weight 85g, including packaging 129g

1 x ZK-R21E Audio power amplifier board