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Amplifiers
  1. Home
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  6. Amplifiers
  7. ARRAROWN ZK-TB21 Bluetooth…
ARRAROWN

ARRAROWN ZK-TB21 Bluetooth 5.0 Audio Amplifier Board 50W x 2 + 100W Subwoofer | 2.1 Channel Stereo Output with Treble & Bass Control

4.4
(470 Ratings)
ARRAROWN ZK-TB21 Bluetooth 5.0 Audio Amplifier Board 50W x 2 + 100W Subwoofer | 2.1 Channel Stereo Output with Treble & Bass Control - main product image
All-inclusive price — duties & taxes paid, no customs charges at delivery
₹5,590₹7,739

You save ₹2,149 (28%)

28% off the seller list price

Qty
300+ bought across the US last month
ARRAROWN ZK-TB21 Bluetooth 5.0 Audio Amplifier Board 50W x 2 + 100W Subwoofer | 2.1 Channel Stereo Output with Treble & Bass Control — Black2 ZK-502T
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₹7,532
In Stock

Doorstep delivery by 24 Oct - 26 Oct from USA

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Upgrade Your Sound System with Powerful 2.1 Channel Audio

About this item

The ARRAROWN ZK-TB21 is a versatile 2.1 channel Bluetooth 5.0 audio amplifier board designed for DIY enthusiasts and home audio projects. It provides a powerful 50W x 2 stereo output along with a 100W subwoofer channel, supporting speakers ranging from 20-100W with 4-8Ω impedance. This imported unit offers superior sound quality with its AM interference suppression, shielding power inductance, and low-noise front-stage operational amplifier, ensuring a cleaner audio experience compared to many local alternatives. All customs duties and GST are included in the price, with delivery via ExpressBox tracked service.

Experience precise audio control with independent treble and bass adjustment buttons directly on the module, eliminating the need for external EQ. The board is powered by DC 12-24V and requires a minimum 5A current for optimal performance, with higher voltage recommended for maximum output. It integrates robust protection features including over-voltage, under-voltage, over-heat, and short-circuit protection, ensuring durability and safety during operation. The clear interface labels printed on the protective plate simplify installation, making it user-friendly even for beginners.

This amplifier board is suitable for a wide range of applications, from home stereo systems and personal audio setups to small-scale event sound. Its compact size (12cm x 10cm x 1.8cm) makes it easy to integrate into custom enclosures. While US-market units require a step-down transformer for India's 230V mains and a plug adapter, this ARRAROWN module offers a cost-effective and high-performance audio upgrade. The ₹5,590 per board price makes it an attractive option for enhancing your sound system.

Key Features

  • Subwoofer Audio Amplifier Board: 50W+50W+100W Bluetooth 5.0 wireless connection, Bluetooth+AUX audio input, 2.1 channel stereo output, just a little sound distortion. Note: When using AUX mode, please confirm that the Bluetooth connection of this module has been disconnected;
  • Treble and Bass Adjustment: This digital Amp board with independent treble and bass adjustment buttons,you can directly adjust the treble and bass through the module, without using the player or speaker;
  • Perfect Sound Quality Experience: The audio power subwoofer amplifier module with powerful chip, AM interference suppression function, shielding power inductance, low noise front stage operational amplifier, let you enjoy a more perfect sound quality experience;
  • With Protective Function: This Bluetooth Amp module is designed with over-voltage protection, under-voltage protection, over-heat protection, short-circuit protection, with case to protective it;
  • Easy Installation and Use: The illustration of each interface is printed on the protective plate, making it easy to install and use even without instructions. Small size: 4.72 in*3.94 in*0.7 in, easy to carry;

Why choose this product

Superior Audio Performance & Control

This ARRAROWN ZK-TB21 amplifier board brings professional-grade audio features to your DIY projects. Its 2.1 channel output, with independent treble and bass controls, allows for precise sound tuning. The integrated AM interference suppression and low-noise operational amplifier ensure a remarkably clear and powerful audio experience, surpassing the clarity and control offered by many standard Indian audio components. Designed for DC 12-24V input, it's a versatile choice for enhancing home stereo systems, party speakers, or custom audio builds. All customs duties and GST are pre-paid, ensuring a transparent landed price for you.

Ideal for DIY Enthusiasts & Home Audio Upgrades

This amplifier board is perfect for hobbyists looking to build custom speakers or upgrade existing audio systems. It's well-suited for those who appreciate detailed sound and want to integrate Bluetooth connectivity. However, users must be comfortable with basic electronics installation and understand that US-market units require a step-down transformer (110-120V to 230V) and a suitable plug adapter for Indian power outlets. If you prefer a plug-and-play solution without voltage conversion, consider a locally certified amplifier.

How to use

  • Connect Speakers and Power — Connect your left and right stereo speakers (4-8Ω, 20-100W) to the L/R output terminals and your subwoofer to the SW output. Connect a DC power supply (12-24V, min 5A) to the power input terminals. For India's 230V mains, use a step-down transformer and appropriate plug adapter.
  • Select Audio Input — Choose your audio source. For Bluetooth, ensure no AUX device is connected and pair your phone or device to 'ZK-TB21'. For wired connection, plug your audio source into the AUX input port. Note: AUX input is active only when Bluetooth is disconnected.
  • Adjust Sound Settings — Use the independent buttons on the module to adjust the treble and bass levels to your preference. Control the main volume using the volume knob on the module or your connected audio source.

Example scenarios

Typical situations where ARRAROWN ZK-TB21 Bluetooth 5.0 Audio Amplifier Board 50W x 2 + 100W Subwoofer | 2.1 Channel Stereo Output with Treble & Bass Control helps — illustrative scenarios, not customer reviews.

1
Scenario 1
Illustrative example
Where it helps

Building a custom home theatre system in a Mumbai apartment, needing a compact amplifier for stereo speakers and a subwoofer.

How this product helps

The ARRAROWN ZK-TB21 provides 2.1 channel output with dedicated subwoofer power, fitting easily into custom enclosures. Its Bluetooth 5.0 allows wireless streaming from phones or smart TVs, simplifying setup without compromising sound quality.

2
Scenario 2
Illustrative example
Where it helps

Upgrading a car's audio system with better sound and Bluetooth connectivity, requiring a compact amplifier that can handle aftermarket speakers and a subwoofer.

How this product helps

This board's 12-24V DC input (requiring a 12V car battery source and appropriate power conversion) and 2.1 channel output make it suitable for car audio projects. Its compact size and protection features are beneficial for vehicle installations.

Technical specifications

Setup & usage

Power Supply RangeDC 12-24V / Minimum 5A required
Stereo Output Power (L/R)50W x 2 @ 4-8Ω
Subwoofer Output PowerMax 100W @ 4-8Ω
Protection FeaturesOver-voltage, Under-voltage, Over-heat, Short-circuit
Cost per use₹5,590 per board — this module is a single unit for your DIY project.
Shelf life after opening12 months (typical for electronic components)
Reapplication mathN/A (Component)
ContraindicationsRequires DC 12-24V power supply (not included); US-market unit requires step-down transformer (110-120V to 230V) and plug adapter for Indian mains.
Allergens / common irritantsN/A (Electronic Component)

How we compare

FeatureARRAROWN ZK-TB21 BluetoothOthers
Power Output2.1 Channel: 50W x 2 Stereo + 100W SubwooferVaries by brand; typically 2.0 channel stereo, 30-50W per channel, with fewer dedicated subwoofer outputs.
Bluetooth VersionBluetooth 5.0Often Bluetooth 4.0 or older; some newer models may offer 5.0.
Audio ControlsIndependent Treble & Bass adjustmentMay have only volume control, or basic tone adjustment.
Protection FeaturesOver-voltage, Under-voltage, Over-heat, Short-circuitBasic protection may be present; comprehensive multi-stage protection is less common.
Sound Quality EnhancementsAM interference suppression, low-noise Op-AmpStandard components, less focus on noise reduction or interference shielding.

Product details

SKUwfs3200
GTIN0789615751216
BrandARRAROWN
Model NumberZK-TB21
ColorBlack
Product Type2.1 Channel Bluetooth Audio Amplifier Board
Mounting TypeSurface Mount
Country of OriginNot stated by manufacturer — US retail version, sourced from authorized US retailers and authorized brand partners
Dimensions (Module)12.0 cm x 10.0 cm x 1.8 cm (4.72in x 3.94in x 0.7in)
Package Weight0.81 kg (1.79 lb)

About ARRAROWN

ARRAROWN specializes in audio components, offering Bluetooth amplifier boards and related electronics designed for DIY enthusiasts and home audio upgrades.

Compliance & Legal

No product-specific compliance warnings identified. Standard imported-goods terms apply: customs duties & GST paid; for personal use in India; follow the manufacturer's usage instructions on the packaging.

Customer Reviews

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FAQ, See What Others Asked

Will this ARRAROWN ZK-TB21 amplifier board work with Indian power outlets?
This is a US-market unit designed for 110-120V mains. To run it on India's 230V supply, use a suitable step-down transformer rated above the amplifier's power draw (minimum 5A), and fit a Type D/M plug adapter or a replacement grounded cord. Ensure the power supply voltage is within the DC 12-24V range specified for the amplifier board.
How many speakers can I connect to this ARRAROWN ZK-TB21 amplifier board?
The ZK-TB21 is a 2.1 channel amplifier board. It can drive two main stereo speakers (left and right channels) with 50W each, plus a separate subwoofer with up to 100W. It is compatible with speakers rated between 20-100W and having an impedance of 4-8Ω.
How do I adjust the treble and bass on the ZK-TB21 amplifier board?
The ZK-TB21 features independent treble and bass adjustment buttons directly on the module. You can easily fine-tune these frequencies to your preference without needing an external equalizer or player, allowing for customized sound output.
What is the power output of the ARRAROWN ZK-TB21 amplifier board?
The amplifier board provides 50W x 2 for the left and right stereo channels and a maximum of 100W for the subwoofer channel. This configuration is suitable for powering a range of DIY speaker projects and enhancing home audio systems.
Does the ZK-TB21 amplifier board have protection features?
Yes, the ARRAROWN ZK-TB21 includes comprehensive protection circuitry. It is designed with over-voltage protection, under-voltage protection, over-heat protection, and short-circuit protection to ensure safe operation and safeguard connected speakers.
Can I use the ZK-TB21 amplifier board with my existing speakers in India?
Yes, provided your speakers are rated between 20-100W and have an impedance of 4-8Ω. You will need to ensure the amplifier board receives the correct DC voltage (12-24V) and sufficient current (min 5A), and that any US-to-India power conversion is handled correctly.
How to buy an original ARRAROWN ZK-TB21 amplifier board in India?
Purchase the ARRAROWN ZK-TB21 amplifier board from authorized US retailers and authorized brand partners, factory-sealed and imported per-order. All customs duties and GST are included in the price, with ExpressBox tracked delivery to your Indian pincode.

Frequently bought together

ARRAROWN ZK-TB21 Bluetooth 5.0 Audio Amplifier Board 50W x 2 + 100W Subwoofer | 2.1 Channel Stereo Output with Treble & Bass Control

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ARRAROWN ZK-TB21 Bluetooth 5.0 Audio Amplifier Board 50W x 2 + 100W Subwoofer | 2.1 Channel Stereo Output with Treble & Bass Control

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ARRAROWN ZK-TB21 Bluetooth 5.0 Audio Amplifier Board 50W x 2 + 100W Subwoofer | 2.1 Channel Stereo Output with Treble & Bass Control

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ARRAROWN ZK-TB21 Bluetooth 5.0 Audio Amplifier Board 50W x 2 + 100W Subwoofer | 2.1 Channel Stereo Output with Treble & Bass Control

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₹15,110

You save ₹7,165 (32%) Extra

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₹15,110

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Spec
Price
₹5,590
₹7,739
₹4,456
₹7,052
₹5,064
₹7,484
₹4,050
₹7,532
₹6,688
₹9,452
₹2,633
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₹1,435
₹2,039
Rating
4.40(470)
4.60(81)
4.88(8)
4.20(48)
4.20(1,773)
4.50(492)
4.40(247)
Brand NameARRAROWNARRAROWNARRAROWNARRAROWNDouk AudioRECOILTYHJ
SourceUS RetailUS RetailUS RetailUS RetailUS RetailUS RetailUS Retail
Sold ByCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrow
Imported from USA
₹5,590₹7,739

You Save ₹2,149

Estimated delivery: Doorstep delivery by 24 Oct - 26 Oct from USA
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