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ZK-MT21 2.1 Channel Bluetooth Audio Power Amplifier Board 50W×2+100W… competes with other Cables & Connectors products on SpecPicks. Use our Compare tool to view specs side-by-side, or browse the full Cables & Connectors category for alternatives.

Hosyond

ZK-MT21 2.1 Channel Bluetooth Audio Power Amplifier Board 50W×2+100W with Treble and Bass Control for DIY Bluetooth Speaker Home Theater

Name: ZK-MT21 2.1 Channel Bluetooth Audio Power Amplifier Board 50W×2+100W with Treble and Bass Control for DIY Bluetooth Speaker Home Theater
Brand: Hosyond
SKU: B0CYLW7NRC
Price: 16.19 USD
Availability: InStock

By SpecPicks Editorial · Verified 2026-08-21

$16.19

Buy on Amazon — $16.19 Compare to similar cables & connectors

*Price sourced from Amazon.com. Last updated 2026-08-21. Price and availability subject to change.

Bottom line: The ZK-MT21 2.1 Channel Bluetooth Audio Power Amplifier Board 50W×2+100W with Treble and Bass Control for DIY Bluetooth Speaker Home Theater is a niche pick — read recent reviews before buying in the cables & connectors category, priced around $16.19. Read recent reviews carefully before committing.

SpecPicks Verdict

SpecPicks classifies ZK-MT21 2.1 Channel Bluetooth Audio Power Amplifier Board 50W×2+100W… as a niche pick — read recent reviews before buying in the cables & connectors 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 cables & connectors 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

[Two Input Methods] It has two audio input methods: Bluetooth and 3.5mm AUX. Bluetooth 5.0 version, higher transmission efficiency, transmission distance up to 49 feet (no obstruction).
[Treble and Bass Adjustment] 2.1 channel, maximum output power 2X50W+100W. By adjusting the high and low frequency knobs, you can make the sound more layered and the bass more shocking.
[Protection Function] It has short circuit protection, overcurrent, overheating, and anti-reverse connection protection. When an overload occurs, the device reports the fault condition to the processor to protect itself from damage.
[High Quality] Features copper DC connectors and barrier style terminals. It can withstand large currents without generating heat or damaging wires. Comes with a DC head lead, which is compatible with the input power interface of this product. Even if you don’t have a DC head adapter or battery, you can easily connect it.
[Application] Widely used in store solicitation, home theaters, DIY speakers, etc. If you have any questions about the product, or the product has quality problems, please feel free to contact us and we will give you a satisfactory answer.

Full Specifications

Brand	Hosyond
Model	MT21
Voltage	12 Volts (DC)
Part Number	MT21
Connectivity	Bluetooth
Output Power	50 Watts
Material Type	Plastic
Mounting Type	Surface Mount
Supply Current	5 Amps
Package Type Name	Box or Clamshell
Specification Met	CE
Number of Channels	2
Included Components	2.1 Bluetooth Amplifier board
Maximum Output Power	50W×2+100W

Ready to buy?

ZK-MT21 2.1 Channel Bluetooth Audio Power Amplifier Board 50W×2+100W with Treble and Bass Control for DIY Bluetooth Speaker Home Theater 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 2026-08-21. Price and availability subject to change.