1、Multifunctional Receiver: This Bluetooth power amplifier board supports multiple sound sources including Bluetooth, AUX, USB flash drive, and computer USB, allowing for easy and convenient plug and play operation. 2、Wide Power Adaptability: With a wide power supply range from DC 5V to 24V, this amplifier board is compatible with various power sources. High voltage is recommended for high power applications. 3、Dual Channel Stereo: Enjoy an ultimate stereo sound experience with the dual channel output of this Bluetooth power amplifier board, delivering immersive sound performance. 4、Advanced Bluetooth 5.0: Equipped with the latest Bluetooth 5.0 technology, this amp board module ensures a seamless and uninterrupted signal transmission with a range of up to 15 meters, even in the absence of obstacles. 5、Compatibility and Versatility: This Bluetooth power amplifier board is suitable for sound devices with speaker power between 10W and 100W, and an impedance ranging from 4 to 8 ohms. It can be easily integrated into a wide range of sound systems.
Specification
Item Type: Bluetooth Power Amplifier Board
Material: Circuit Board, Acrylic
Weight: Approx. 93.00g/3.28oz
Model Number: ZK 502M
Sound Input: Bluetooth, AUX, USB Flash Drive, Computer USB (Plug and Play)
Adaptable Power Supply: DC 5 to 24V (High Voltage Recommended for High Power)
Compatible Speakers: 10 to 100W, 4 to 8Ω
Number of Channels: Left and Right Dual Channel (Stereo)
Bluetooth Version: 5.0 (>15m with No Obstacles)
Bluetooth Name: Wuzhi
Protection Mechanism: Overheat, Overcurrent, Short Circuit Protection
Power Voltage:
12V: 8Ω/12W+12W, 4Ω/20W+20W
15V: 8Ω/18W+18W, 4Ω/30W+30W
19V: 8Ω/30W+30W, 4Ω/40W+40W
24V: 8Ω/40W+40W, 4Ω/50W+50W
Package List
1 x Panel
1 x Base
9 x Screw
4 x Nut
1 x Electronic Mainboard
1 x Cap
3 x Accessory
1 x Screwdriver
Note
To have sufficient output power, make sure the sound input is sufficient and the power supply or voltage is adequate. Higher power supply voltage will result in greater power output. Different impedance speakers will have different output power. In the case of sufficient voltage and current, larger speaker impedance will result in relatively lower sound power.
Products received faulty, damaged, or not as described are eligible for a return, refund, or replacement in accordance with local consumer laws. We are committed to ensuring all products meet the standards of quality and reliability expected by our customers. Please note that we do not accept returns or provide refunds for change of mind. We encourage you to carefully consider your purchase to ensure it meets your needs and expectations.
Delivery & returns: ships from Australian warehouses, usually within 5–12 business days. A few very remote postcodes can’t be reached by our couriers — if yours is one, we’ll contact you before dispatch. Faulty or damaged items are covered under the Australian Consumer Law.






