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Amplifiers
  1. Home
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  3. Home Audio
  4. Home Theater
  5. Receivers & Amplifiers
  6. Amplifiers
  7. Hosyond ZK-TB21 Bluetooth…
Hosyond

Hosyond ZK-TB21 Bluetooth 5.0 50W+50W+100W 2.1 Channel Subwoofer Amplifier Board | HiFi Stereo Digital Audio Amp for Home Theater

Hosyond ZK-TB21 Bluetooth 5.0 50W+50W+100W 2.1 Channel Subwoofer Amplifier Board | HiFi Stereo Digital Audio Amp for Home Theater - main product image
All-inclusive price — duties & taxes paid, no customs charges at delivery
₹4,610₹6,490

You save ₹1,880 (29%)

Qty
Hosyond ZK-TB21 Bluetooth 5.0 50W+50W+100W 2.1 Channel Subwoofer Amplifier Board | HiFi Stereo Digital Audio Amp for Home Theater — ZK-TB21
ZK-TB21
₹4,610
₹6,490
In Stock
Hosyond ZK-TB21 Bluetooth 5.0 50W+50W+100W 2.1 Channel Subwoofer Amplifier Board | HiFi Stereo Digital Audio Amp for Home Theater — ZK-MT21
ZK-MT21
₹3,590
₹4,000
In Stock

Estimated doorstep delivery by 21 Nov - 23 Nov from USA

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Sourced from US retailers
Sourced from US retailers
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Factory-Sealed
All Duties Included
All Duties Included
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GST Invoice Issued
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ExpressBox Tracked
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High-Quality Audio at Competitive Price

About this item

Hosyond ZK-TB21 Bluetooth amplifier board is a compact, high-power stereo audio solution designed for home theater DIY speakers and audio projects. It features Bluetooth 5.0 for efficient wireless streaming, supports AUX input, and delivers a total output of 200W across 2.1 channels with full treble and bass control. The board includes protection functions such as overheat, reverse connection, and circuit breaker, ensuring safe operation. Its size (120*100*22mm) and lightweight (195g) make it suitable for various custom audio setups. The amplifier requires a DC power supply of 12-24V and supports impedance loads of 4-8Ω, making it versatile for different speaker configurations.

Users report clear, full sound with minimal distortion at high power output, suitable for home theaters and DIY projects. The copper connectors and insulated terminals facilitate high-current wiring, and the independent bass controls allow precise sound tuning. Properly powered with a suitable supply voltage, this amplifier can maximize output power, providing theater-like sound effects in a compact form. It ships from USA with all duties paid, arriving in 11-13 days.

In India, this amplifier is ideal for DIY audio enthusiasts, home theater setups, and custom speaker builders. It supports 12V-24V power supplies, compatible with Indian voltage standards when used with a step-down transformer and appropriate plug adapters. Delivered via tracked ExpressBox, it arrives factory-sealed, with a 14-day return guarantee for damaged or incorrect items.

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.

Why choose this product

Advanced TPA3116D2 Chip & Full Protection

This amplifier uses the TPA3116D2 chip for high-fidelity sound with THD ≤0.1%. It includes protections against overheating, reverse polarity, and short circuits, ensuring safe, reliable operation in home setups.

Ideal for DIY & Home Theater Enthusiasts

Designed for custom speakers and home theaters, it supports 4Ω speakers, offers independent treble and bass controls, and ships factory-sealed from USA with duties paid, perfect for Indian buyers seeking quality audio solutions.

How to use

  • Connect Power Supply — Use a DC 12-24V power supply with >2A current. Connect the positive and negative terminals securely to the copper connectors.
  • Input Audio Signal — Pair your device via Bluetooth or connect via AUX jack. Ensure Bluetooth is disconnected when using AUX input for clear audio.
  • Connect Speakers — Attach 4Ω speakers to the output terminals. Turn on the amplifier, adjust bass and treble knobs for desired sound.
  • Operate & Optimize — Switch on the amplifier, select input mode, and fine-tune volume and bass controls. For long-term use, ensure proper ventilation.

Example scenarios

Typical situations where Hosyond ZK-TB21 Bluetooth 5.0 50W+50W+100W 2.1 Channel Subwoofer Amplifier Board | HiFi Stereo Digital Audio Amp for Home Theater helps — illustrative scenarios, not customer reviews.

1
Scenario 1
Illustrative example
Where it helps

Rajesh, 35, Mumbai, wants a compact amplifier for his DIY home theater setup, needing Bluetooth streaming and high power.

How this product helps

Hosyond ZK-TB21 provides 200W total, supports Bluetooth 5.0, arrives factory-sealed from USA, with duties paid, in 11-13 days.

Technical specifications

Setup & usage

Recommended Power SupplyDC 12-24V, >2A
Power Output200W total (50W+50W+100W)
Shelf LifeFactory-sealed, check manufacturer's date
Reapplication/Usage DurationDepends on power supply, speaker impedance
Suitable ForHome theater DIY speakers, square speakers
Cost per use₹4,610 per unit

Warranty

CrowCrowCrow helps you bring this product to India. Any warranty is offered by Hosyondunder its own policy.

Read more

How we compare

FeatureHosyond ZK-TB21 BluetoothOthers
Power OutputSupports 50W+50W+100W, total 200W, with THD ≤0.1%Indian home theater amps typically support 30-60W per channel, with higher distortion levels
Input OptionsBluetooth 5.0 and AUX input, long-range wireless streamingMost Indian models support only wired inputs, with limited Bluetooth range
Protection & DurabilityOverheat, reverse, short circuit protections, wide 12-24V inputMany Indian amps lack comprehensive safety protections, risking damage
Build & WiringCopper connectors, insulated terminals, lightweight designIndian amps often have cheaper wiring, less protection, heavier build

Product details

SKUzwy5373
GTIN0732214748279
BrandHosyond
Model NumberH017
Size120*100*22mm
Weight195g
Input VoltageDC 12V-24V

About Hosyond

Hosyond specializes in high-fidelity audio components, delivering reliable, USA-imported amplifiers for home and professional use.

Compliance & Legal

Supports wide voltage input (12-24V), includes safety protections, factory-sealed from USA, all duties paid, arrives in 11-13 days.

Customer Reviews

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FAQ, See What Others Asked

Will this amplifier work with Indian power outlets?
This is a US-market unit designed for 110-120V mains. To use in India, employ a step-down transformer rated above the amplifier's power draw and a Type D/M plug adapter. It ships factory-sealed from USA, duties included, arriving in 11-13 days.
How many speakers can I connect to this amplifier?
Supports 2.1 channels with 50W+50W+100W output. Use 4Ω speakers for optimal performance. Ensure the power supply exceeds the required voltage and current for maximum output.
Is this amplifier safe for home use?
Yes, it includes protections against overheating, reverse polarity, and short circuits. It is designed for safe operation with wide voltage support (DC 12-24V) and factory-sealed quality from USA.
How do I wire this amplifier?
Connect the copper DC connectors and insulated terminals for high-current wiring. Use a suitable 12-24V power supply, and ensure correct speaker impedance matching for best results.
What is the delivery time to India?
Ships tracked via ExpressBox, arriving in 11-13 days. Duties are paid, and the amplifier is factory-sealed, ensuring quality and authenticity.

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Hosyond ZK-TB21 Bluetooth 5.0 50W+50W+100W 2.1 Channel Subwoofer Amplifier Board | HiFi Stereo Digital Audio Amp for Home Theater

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Hosyond ZK-TB21 Bluetooth 5.0 50W+50W+100W 2.1 Channel Subwoofer Amplifier Board | HiFi Stereo Digital Audio Amp for Home Theater

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₹14,530

You save ₹6,560 (31%) Extra

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₹14,530

You save ₹6,560 (31%) Extra

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Spec
Price
₹4,610
₹6,490
₹4,430
₹7,000
₹5,490
₹7,600
₹4,530
₹5,060
₹3,620
₹4,040
₹37,500
₹38,650
₹4,430
₹6,120
Brand NameHosyondARRAROWNARRAROWNARRAROWNARRAROWNHONEY JOYMarvel
SourceUS RetailUS RetailUS RetailUS RetailUS RetailUS RetailUS Retail
Sold ByCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrow
Imported from USA
₹4,610₹6,490

You Save ₹1,880

Estimated doorstep delivery by 21 Nov - 23 Nov from USA
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Your Order Journey: From Purchase to Doorstep

You Order
Place your order
USA Warehouse dispatch
Packed & shipped
International Air Shipping
Fast transit
Consignment to India Warehouse
Customs cleared
Doorstep delivery
Delivered to you
You Order
Place your order
USA Warehouse dispatch
Packed & shipped
International Air Shipping
Fast transit
Consignment to India Warehouse
Customs cleared
Doorstep delivery
Delivered to you

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vs
₹13,830+ (3× the price)
₹4,610 locked, all-in
Hard to get the original US version in India
Original US version, shipped to your door
Extra pay for Import Duties, GST, and forex fees
One price in INR, no customs charges at delivery
4–12 weeks · No tracking
11-13 days · live tracking
Grey market, no guarantee, no protection, no refund
Sourced from US retailers, India-verified, return available
Lost in transit = ₹0 back
Full protection included