ZK-TB21 100W+100W 2.1 Channel Bluetooth-Compatible Amplifier Board 200W HiFi Subwoofer Audio AMP with Treble and Bass Control BT 5.0 AUX Inputs DC9-24V for DIY Speakers AMP

Price: $23.99
(as of Aug 27, 2025 22:18:53 UTC – Details)

Product Name: 2.1 Channel Bluetooth-Compatible Audio Amplifier Module
Product model: ZK-TB21
Bluetooth-Compatible version: 5.0 (unobstructed, 10 meters)
Input sensitivity: 500mV
Input method: AUX+Bluetooth-Compatible
Number of channels: 2.1 channels
Amplifier chip: TPA3116D2 (with AM interference suppression function)
Adaptive power supply: DC 12-24V/5A or above (the higher the voltage, the greater the output power)
Compatible speaker: 20~100W, 4~8Ω
Output power: Left and right channels ≤ 50W
Subwoofer ≤ 100W
Protection mechanism: overvoltage, undervoltage, overheating, DC detection, short circuit protection
Product size: 120mm*100mm* 20mm
Product weight: approximately 256g (including packaging)
Package Dimensions ‏ : ‎ 5 x 4 x 0.7 inches; 1 ounces
Item model number ‏ : ‎ ZK-TB21
Date First Available ‏ : ‎ May 20, 2025
Manufacturer ‏ : ‎ EC Buying
ASIN ‏ : ‎ B0F996VTWL
Best Sellers Rank: #572,937 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #261 in Signal Amplifiers

Experience powerful sound quality with this 2.1 channel Bluetooth-Compatible amplifier board, featuring 200W output, treble and bass control, and Bluetooth-Compatible 5.0 connectivity. Enhance your DIY speaker projects with ease
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