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Bluetooth Audio Amplifier Board ZK-TB21 2.1CH 50W
6th Mar 2026, 03:21 PM

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 2 years
₹1,665
Apply Coupon 2%

44% Off
₹1,699
₹2,999

Highest: ₹9,560
Average: ₹3,486
Lowest: ₹1,699
Lowest Offer: ₹1,665

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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 ₹1,699 and the lowest final price is ₹1,665. The average and highest prices are ₹3,486 and ₹9,560 respectively. The current offer price of the product is ₹1,665, which is ₹1,821 less than the average price.

Lowest Ever Offer Price ₹1,665
30th Oct 2023
Lowest Ever Price ₹1,699
14th Jul 2025
Average Price ₹3,486
Based on 889 days price tracking
Highest Price ₹9,560
8th May 2024

Current Price in India

Price after Coupon or Discount ₹1,665
Price ₹1,699
MRP ₹2,999
Savings ₹1,334
Discount 44.48%

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 17th Sep 2025
₹2,499 ₹1,699
32.01% drop
Offer Price Drop 17th Sep 2025
₹2,449 ₹1,665
32.01% drop
Offers: 2% Coupon
Price Drop 29th Jul 2025
₹4,829 ₹1,699
64.82% drop
Price Drop 14th Jul 2025
₹4,406 ₹1,699
61.44% drop
Price Drop 8th Jul 2025
₹5,356 ₹4,406
17.73% drop
Price Drop 2nd Jun 2025
₹5,069 ₹4,460
12.01% drop
Price Drop 19th May 2025
₹6,644 ₹5,069
23.7% drop
Price Drop 23rd Sep 2024
₹6,644 ₹6,004
9.63% drop
Price Drop 11th Jun 2024
₹8,658 ₹6,818
21.25% drop
Price Drop 31st May 2024
₹9,560 ₹8,658
9.44% drop
Price Drop 31st Oct 2023
₹7,957 ₹6,355
20.13% 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 B08L4D2Z79
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

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 1082 reviews

Bluetooth Audio Amplifier Board ZK-TB21 2.1CH 50W has 8.8 rating out of 10. This average rating is consist of 1082 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.