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ZK-TB21 Bluetooth 5.0 50W+50W+100W 2.1 Channel Subwoofer Amplifier Board… competes with other Sound Cards products on SpecPicks. Use our Compare tool to view specs side-by-side, or browse the full Sound Cards category for alternatives.

Hosyond

ZK-TB21 Bluetooth 5.0 50W+50W+100W 2.1 Channel Subwoofer Amplifier Board TPA3116D2 HiFi Treble and Bass Control Stereo Digital Audio Amp Board for Home Theater DIY Speakers

Name: ZK-TB21 Bluetooth 5.0 50W+50W+100W 2.1 Channel Subwoofer Amplifier Board TPA3116D2 HiFi Treble and Bass Control Stereo Digital Audio Amp Board for
Brand: Hosyond
SKU: B0CCJQBWST
Price: 20.60 USD
Availability: InStock

By SpecPicks Editorial · Verified 2026-07-22

$20.60

Buy on Amazon — $20.60 Compare to similar sound cards

*Price sourced from Amazon.com. Last updated 2026-07-22. Price and availability subject to change.

Bottom line: The ZK-TB21 Bluetooth 5.0 50W+50W+100W 2.1 Channel Subwoofer Amplifier Board TPA3116D2 HiFi Treble and Bass Control Stereo Digital Audio Amp Board for Home Theater DIY Speakers is a niche pick — read recent reviews before buying in the sound cards category, priced around $20.60. Read recent reviews carefully before committing.

SpecPicks Verdict

SpecPicks classifies ZK-TB21 Bluetooth 5.0 50W+50W+100W 2.1 Channel Subwoofer Amplifier… as a niche pick — read recent reviews before buying in the sound cards category, based on our editorial and benchmark analysis and our ranking model that weights rating × review-volume × price-fit. Hosyond's positioning sits within the broader category mid-tier. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.

Common buyer scenarios for sound cards of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.

Pros & Cons

Pros

✓ Backed by Hosyond's warranty and support channels
✓ Ships via Amazon with Prime eligibility and the standard returns policy

Cons

✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified

Key Features

TPA3116D2 HIFI chip solution: with AM interference suppression function, 2.1 channel stereo output 50W+50W+100W, to ensure continuous serial high-power operation, THD ≤0.1%. Using high-quality filter inductors, the sound is full and clear.
Bluetooth and AUX audio input: Bluetooth 5.0 version, higher transmission efficiency and longer distance. If your playback device does not have Bluetooth, you can also input audio signals through the 3.5MM jack(Note: When using AUX mode, please confirm that the Bluetooth connection of this module has been disconnected).
Safety protection: The power amplifier board has overheat protection, reverse connection protection, circuit breaker protection, overvoltage and undervoltage protection; wide voltage input DC: 12-24V.
Features copper DC connectors and insulated terminals. It can withstand high current, does not generate heat, and does not damage the wire. The free DC head lead is compatible with the input power interface of this product, even if you don't have a DC head adapter, you can easily wire it.
Independent high and low bass control knobs, easy to adjust the volume, allowing you to experience theater-like sound effects. With its excellent performance and comprehensive cost performance, TDA3116D2 is widely used in home theaters, square speakers, etc.

Full Specifications

Brand	Hosyond
Model	H017
Voltage	24 Volts (DC)
Part Number	H017
Connectivity	Bluetooth
Output Power	200 Watts
Material Type	Copper
Mounting Type	Surface Mount
Supply Current	5 Amps
Package Type Name	Protective Shell
Specification Met	CE, FCC
Number of Channels	2
Maximum Output Power	200W
Maximum Supply Voltage	24 Volts (DC)

Ready to buy?

ZK-TB21 Bluetooth 5.0 50W+50W+100W 2.1 Channel Subwoofer Amplifier Board TPA3116D2 HiFi Treble and Bass Control Stereo Digital Audio Amp Board for Home Theater DIY Speakers is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Check price on Amazon →

*Price sourced from Amazon.com. Last updated 2026-07-22. Price and availability subject to change.