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Bluetooth Audio Amplifier Board ZK-TB21 2.1CH 50W
30th Mar 2026, 11:28 AM

Bluetooth Audio Amplifier Board, ZK-TB21 2.1CH 50W x 2 +100W Subwoofer Power Amp with Treble and Bass Control, Bluetooth5.0 and AUX Inputs, Stereo Digital AMP for DIY Home Speakers

Price may vary by location, shipping cost, and availability.
Lowest in last 3 years
₹2,449
Apply Coupon 2%

51% Off
₹2,499
₹4,999

Highest: ₹13,767
Average: ₹5,397
Lowest: ₹2,499
Lowest Offer: ₹2,449

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Based our analysis and observation, there is 0.00% chance that the price of Bluetooth Audio Amplifier Board ZK-TB21 2.1CH 50W... will increase. Price of product might fluctuate around 3% from current price.*

Price History Graph

Offer Price Prices
Lowest: -
Average: -
Highest: -

Price History Information

You can check the price history of Bluetooth Audio Amplifier Board, ZK-TB21 2.1CH 50W x 2 +100W Subwoofer Power Amp with Treble and Bass Control, Bluetooth5.0 and AUX Inputs, Stereo Digital AMP for DIY Home Speakers here. This product's current Price in India is ₹2,499 and the lowest final price is ₹2,449. The average and highest prices are ₹5,397 and ₹13,767 respectively. The current offer price of the product is ₹2,449, which is ₹2,948 less than the average price.

Lowest Ever Offer Price ₹2,449
30th Jun 2022
Lowest Ever Price ₹2,499
14th Apr 2025
Average Price ₹5,397
Based on 1376 days price tracking
Highest Price ₹13,767
5th Dec 2024

Current Price in India

Price after Coupon or Discount ₹2,449
Price ₹2,499
MRP ₹4,999
Savings ₹2,550
Discount 51.00%

Recent Price Drops on Bluetooth Audio Amplifier Board, ZK-TB21 2.1CH 50W x 2 +100W Subwoofer Power Amp with Treble and Bass Control, Bluetooth5.0 and AUX Inputs, Stereo Digital AMP for DIY Home Speakers

Price Drop 10th Dec 2025
₹4,564 ₹2,499
45.25% drop
Price Drop 12th Nov 2025
₹2,631 ₹2,499
5.02% drop
Offer Price Drop 12th Nov 2025
₹2,578 ₹2,449
5.02% drop
Offers: 2% Coupon
Price Drop 20th Oct 2025
₹5,406 ₹2,499
53.77% drop
Price Drop 8th Jun 2025
₹5,384 ₹2,499
53.59% drop
Price Drop 1st Jun 2025
₹6,178 ₹2,499
59.55% drop
Price Drop 23rd May 2025
₹5,895 ₹2,499
57.61% drop
Price Drop 8th May 2025
₹5,859 ₹2,499
57.35% drop
Price Drop 14th Apr 2025
₹6,124 ₹2,499
59.2% drop
Price Drop 5th Apr 2025
₹6,217 ₹5,859
5.76% drop
Price Drop 19th Mar 2025
₹5,237 ₹4,974
5.02% drop
Price Drop 2nd Mar 2025
₹5,925 ₹5,237
11.61% drop
Price Drop 18th Feb 2025
₹6,768 ₹6,168
8.87% drop
Price Drop 4th Feb 2025
₹6,716 ₹6,131
8.71% drop
Price Drop 14th Jan 2025
₹6,582 ₹6,163
6.37% drop
Price Drop 11th Dec 2024
₹13,158 ₹6,665
49.35% drop
Price Drop 11th Jun 2024
₹6,339 ₹5,854
7.65% drop
Price Drop 24th May 2024
₹6,337 ₹5,852
7.65% drop
Price Drop 24th Jan 2024
₹6,339 ₹5,902
6.89% drop

Product Information

Details

Product Name Bluetooth Audio Amplifier Board, ZK-TB21 2.1CH 50W x 2 +100W Subwoofer Power Amp with Treble and Bass Control, Bluetooth5.0 and AUX Inputs, Stereo Digital AMP for DIY Home Speakers
Store Product Code B08G1NZF3Y
Store Name amazon.in
Rating 8.8 / 10
Product Manufacturer DideaECO
Model Number ZK-TB21
Dimensions 11.18 x 6.99 x 1.98 cm; 168 g
Country of Origin USA

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;

Images

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Image of Bluetooth Audio Amplifier Board, ZK-TB21 2.1CH 50W x 2 +100W Subwoofer Power Amp with Treble and Bass Control, Bluetooth5.0 and AUX Inputs, Stereo Digital AMP for DIY Home Speakers
Image of Bluetooth Audio Amplifier Board, ZK-TB21 2.1CH 50W x 2 +100W Subwoofer Power Amp with Treble and Bass Control, Bluetooth5.0 and AUX Inputs, Stereo Digital AMP for DIY Home Speakers
Image of Bluetooth Audio Amplifier Board, ZK-TB21 2.1CH 50W x 2 +100W Subwoofer Power Amp with Treble and Bass Control, Bluetooth5.0 and AUX Inputs, Stereo Digital AMP for DIY Home Speakers
Image of Bluetooth Audio Amplifier Board, ZK-TB21 2.1CH 50W x 2 +100W Subwoofer Power Amp with Treble and Bass Control, Bluetooth5.0 and AUX Inputs, Stereo Digital AMP for DIY Home Speakers
Image of Bluetooth Audio Amplifier Board, ZK-TB21 2.1CH 50W x 2 +100W Subwoofer Power Amp with Treble and Bass Control, Bluetooth5.0 and AUX Inputs, Stereo Digital AMP for DIY Home Speakers
Image of Bluetooth Audio Amplifier Board, ZK-TB21 2.1CH 50W x 2 +100W Subwoofer Power Amp with Treble and Bass Control, Bluetooth5.0 and AUX Inputs, Stereo Digital AMP for DIY Home Speakers

Rating and Reviews

8.8 Based on 1085 reviews

Bluetooth Audio Amplifier Board ZK-TB21 2.1CH 50W has 8.8 rating out of 10. This average rating is consist of 1085 individual ratings. You can rate this product at product review page.

* Predictions is created on based of past prices and trends, it does not guarantee that it will happen. These are just prediction for theoretical information only.