JIAATGA ZK-TB21 Bluetooth amplifier board top view showing compact DIY hub
JIAATGA ZK-TB21 dual TPA3116D2 chips close-up for high fidelity
JIAATGA ZK-TB21 treble and bass knobs for on-device tonal control
JIAATGA ZK-TB21 Bluetooth and AUX inputs for flexible wireless setups
JIAATGA ZK-TB21 protective circuit guarding against overload and overheating
JIAATGA ZK-TB21 DIY speaker project ready for creative builds

JIAATGA

JIAATGA ZK-TB21 Bluetooth 5.0 2.1 Channel Amplifier Board — 50W+50W+100W

High-performance electronics accessories made for confident daily results

$26.28

3 shoppers currently have this item in cart.

Low stock: only 5 left in inventory. Add to cart before it's gone.

Shop Pay installment options may appear at checkout where eligible.

Free shipping Secure checkout 100% refund eligible
Bundle & save Buy 2 and save checkout time

Premium electronics accessories quality selected for United States (USA) customers.

Routine pack Build your routine pack (3)

Fast dispatch with always-free shipping and secure checkout on every order.

Free shipping

i

Free shipping on every order. Fast dispatch, tracked delivery, and secure checkout included.

Easy returns

i

Simple return flow and responsive support for eligible items.

Peak-demand shipping delays

i

During high demand, deliveries may experience short carrier delays. Tracking updates remain active for every order.

24/7 customer support

Questions before checkout? Our team is available and ready to help.

Return & RefundEasy returns and policy details Shipping PolicyDelivery process and tracking info
Share

Why customers choose Nexoltic

Overview

The ZK-TB21 from JIAATGA is a compact Bluetooth 5.0 amplifier board designed for DIY wireless speakers and small hi fi setups. Built around dual TPA3116D2 chips, it delivers a 2.1 channel stereo experience with low distortion (THD ≤ 0.1%) and clear, detailed playback, all in a space friendly package.

What makes it versatile

  • 2.1 channel output with a 50W + 50W + 100W configuration, suitable for compact speaker builds
  • Wide input range from 9 to 24 V DC for flexible power options
  • Bluetooth 5.0 plus an AUX input for diverse source connectivity
  • Independent treble and bass controls for on device tonal adjustments without needing extra gear
  • Protective features such as over voltage, under voltage, over heat, and short circuit protection

Real world uses

  • Upgrade a portable or desktop wireless speaker with robust amplification and built in tone controls
  • Design a compact home audio system or gaming setup with a clean Bluetooth link
  • Prototype DIY audio projects that mix wired and wireless inputs on a single board

Tips for best results

  • Power matters: higher supply voltage can increase available output, within safe limits
  • Speaker impedance affects output; plan your power supply accordingly to avoid under or overloading
  • When using AUX mode, ensure the Bluetooth connection is disconnected to prevent input conflicts

Safety and setup notes

Follow standard DIY electrical practices. The board includes multiple protection features to guard against common issues, and adequate ventilation helps maintain performance during longer use.

FAQ

Q: What is the JIAATGA ZK-TB21 amplifier board?

A: A Bluetooth 5.0 enabled 2.1 channel amplifier with dual TPA3116D2 chips and independent treble/bass controls for DIY wireless speakers.

Q: What power and inputs does it support?

A: Operates from 9-24V DC with Bluetooth and AUX inputs and protective features; ensure adequate supply and compatible speaker impedance.

You may also like