ZK-HT21 Bluetooth Amplifier Board 160W×2+220W Subwoofer 2.1 Channel | Audio Amplifier Bluetooth Module with Treble and Bass Control,AUX/Bluetooth/USB Inputs for Passive Speakers

AUX, Bluetooth, USB, and
Subwoofer Inputs: This Bluetooth amplifier board integrates AUX, Bluetooth, USB, and subwoofer inputs. It features a 3.5 mm AUX input for connecting devices such as cellphones, laptops, or TVs (the AUX connecting cable is not included). With Bluetooth 5.0, it pairs swiftly within a 10-meter (32-foot) range without obstructions. USB and subwoofer inputs are also provided for use as required.
Note: When using AUX mode, please ensure the Bluetooth connection on this module is turned off.
Protection Mechanism: The amplifier board is designed with protective features, including overvoltage, undervoltage, overheating, DC detection, and short circuit protection. It protects itself from damage in the event of overload.
TDA7498E Chip: The board is equipped with two original TDA7498E chips in a 2.1 -channel configuration: left channel (max 160W output), right channel (max 160W output), and subwoofer output (max 220W output).
Compatible Speakers: This amplifier board is suitable for 30-200W, 4-8 passive speakers, allowing you to match different passive speakers to your needs. (For passive speakers only; not for Bluetooth or active speakers). The required power supply is DC 15-36V (undervoltage protection activates below 9V. Higher voltage results in higher output power).
Multifunctional Dial Button: The dial button serves multiple functions: -
Press Down: Short press to pause/play; Long press to switch input mode (Bluetooth/AUX/USB flash drives).
- Dial Right: Short press to play next track; Long press to increase volume.
- Dial Left: Short press to play previous track; Long press to decrease volume