ZK-502T Bluetooth 5.0 Stereo Amplifier Board with AUX – Up to 2 × 50W

Build a compact stereo audio system with the ZK-502T amplifier board. Connect a Bluetooth or AUX audio source and adjust treble and bass independently to suit your speakers and listening space.

Features

• TPA3116D2 amplifier chip with AM interference suppression.
• Bluetooth 5.0 with a listed unobstructed range of up to 10 metres.
• AUX input for wired audio.
• Two-channel stereo output with independent high- and low-frequency adjustment.
• Listed protection: overvoltage, undervoltage, overheating, DC detection and short circuit.

Specifications

• Supply: DC 9–24V, 2A or higher.
• Power connector: 5.5 × 2.1mm DC socket.
• Compatible speakers: 15–100W, 4–8Ω.
• Signal-to-noise ratio: greater than 90dB.
• Listed board dimensions vary by version: 110 × 70 × 21mm for the upgraded app version; 90 × 70 × 15mm for the potentiometer lead-out version.

Supplier-listed output

• 12V: 15W × 2 at 8Ω or 30W × 2 at 4Ω.
• 19V: 20W × 2 at 8Ω or 40W × 2 at 4Ω.
• 24V: 30W × 2 at 8Ω or 50W × 2 at 4Ω.

Package and setup

Includes one amplifier module with accessories requiring assembly. Choose your preferred version from the variant options. Use a compatible DC power supply within the rated voltage range. Actual output depends on supply capacity, speaker impedance and audio input; maximum figures are not guaranteed continuous output. This is a DIY component, not a complete speaker system.