Bluetooth 5.1 Power Amplifier Module 2.1 Channel HiFi Knob Adjustment Sound Amplifier Board DC 9‑24V - Walmart.com

Walmart

Exact model name 'ZK-MT21' visible on board, Identical layout of knobs, terminals, and components, Matching power specifications '50W*2+100W', Matching '2.1 CHANNEL POWER AMPLIFIER' text, Identical black PCB and silver knob design, All visible text and symbols match the source frame, High priority retailer (Walmart.com)

Amazon.com: MT21 2.1-Channel BT X Digit dio Power Amplifier Module High Power Sound Amp Suitable for 20-100W Horns : Electronics

Amazon.com

Exact model name 'ZK-MT21' visible on board, Identical layout of knobs, terminals, and components, Matching power specifications '50W*2+100W', Matching '2.1 CHANNEL POWER AMPLIFIER' text, Identical black PCB and silver knob design, All visible text and symbols match the source frame, High priority retailer (Amazon.com)

X 2.1 Channel Bluetooth 5.0 Subwoofer Amplifier Board, 50W X 2 + 100W Power Audio Stereo Amplifier Board, Subwoofer Amplifier, AUX, ZK-TB21, ZK-MT21 | SHEIN Singapore

Shein

Exact model name 'ZK-MT21' visible on board, Identical layout of knobs, terminals, and components, Matching power specifications '50W*2+100W', Matching '2.1 CHANNEL POWER AMPLIFIER' text, Identical black PCB and silver knob design, All visible text and symbols match the source frame