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Item #:
145750863
ZK-TB21 50W50W100W 2.1CH Bluetooth 5.0 Subwoofer Amplifier Board BassTreble Control, AUXUSB Input, Overload Protection, Compact for Vehicle Amplifier
Item #:
145750863
SCR 555
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
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Imported from USA store
QTY:
Order now and get it around Friday, July 10
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Deliver crisp, powerful sound with 50W x 2 (L/R channels) + 100W (subwoofer) output.
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Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
Bluetooth 5.0
Enjoy seamless wireless audio streaming with advanced Bluetooth 5.0 technology, ensuring minimal latency and enhanced connectivity for your music needs.
Bass/Treble Control
Customize your listening experience with integrated bass and treble controls, allowing users to adjust sound quality to their preferences for both music and audio playback.
Compact Design
Designed for easy installation in vehicles, the compact size of the ZK-TB21 makes it a versatile choice without compromising on power and functionality, perfect for space-conscious users.
Product Details
| Item Weight | 1.5 lbs (680 grams) |
Who Should Buy?
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Car Audio Enthusiasts
Perfect for users looking to enhance their car audio system with powerful bass and Bluetooth connectivity.
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DIY Audio Projects
Ideal for hobbyists building their own audio systems, providing flexibility with AUX/USB inputs and compact design.
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Compact Spaces
Designed for limited spaces, this amplifier fits easily into small areas while delivering great sound performance.
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Professional Audio Engineers
May not meet the high standards required for studio-quality sound needed by professional audio engineers and producers.
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High-Powered Systems
Not suitable for users who need very high power output or advanced features for large sound systems.
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Budget-Conscious Shoppers
This product may be pricey for users primarily seeking basic features without the extra capabilities offered.
Product Description
ZK-TB21 50W50W100W 2.1CH Bluetooth 5.0 Subwoofer Amplifier Board BassTreble Control, AUXUSB Input, Overload Protection, Compact for Vehicle Amplifier ZK-TB21
Have any Query? Chat with us
Customer Questions & Answers
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Question:
What is the power output of the ZK-TB21 amplifier?
Answer: The ZK-TB21 amplifier delivers a power output of 50W for each of the two channels and 100W for the subwoofer channel, making it 2.1CH. This configuration ensures a strong audio performance, suitable for both smaller spaces and larger environments, like vehicles or home audio setups. Users will appreciate its capability to produce deep bass and clear treble, enhancing their overall listening experience, whether it's for music, movies, or gaming. -
Question:
Can the ZK-TB21 amplifier connect to multiple devices?
Answer: Yes, the ZK-TB21 amplifier supports Bluetooth 5.0 connectivity, which allows it to wirelessly connect to various devices, such as smartphones, tablets, and laptops. In addition, it features AUX and USB inputs for direct connections to other audio sources. This versatility makes it ideal for users who want to switch between different devices seamlessly, whether they're at home or on the go. -
Question:
Does the ZK-TB21 amplifier have a volume control feature?
Answer: Absolutely! The ZK-TB21 amplifier includes dedicated Bass and Treble control settings, allowing users to customize their audio output according to their preferences. Additionally, it features a master volume control, enabling you to adjust the overall sound level easily. This functionality is particularly beneficial for those looking to enhance their audio experience, tailoring it to fit the room's acoustics or personal taste. -
Question:
What safety features does the ZK-TB21 amplifier have?
Answer: The ZK-TB21 amplifier is equipped with overload protection, ensuring that the device operates safely and efficiently, even at high output levels. This feature prevents damage to both the amplifier and connected speakers in the event of a power surge or excessive load. Users can enjoy high-quality sound without worrying about potential hazards, making it a reliable choice for long-term use. -
Question:
Is the ZK-TB21 amplifier compact enough for a vehicle installation?
Answer: Yes, the ZK-TB21 amplifier is designed to be compact, making it an excellent choice for vehicle installations. Its small footprint allows it to fit in tight spaces while still delivering powerful audio performance. This is particularly advantageous for car enthusiasts who want to upgrade their sound systems without sacrificing valuable trunk or cabin space. -
Question:
How does the Bluetooth 5.0 function in the ZK-TB21 amplifier improve audio streaming?
Answer: The Bluetooth 5.0 functionality in the ZK-TB21 amplifier significantly improves audio streaming capabilities by providing a more stable and efficient connection. This technology reduces latency and enhances the range of connectivity to several meters, allowing users to stream high-quality audio without interruption. Whether you’re in the kitchen or outside, you can enjoy seamless audio playback from your favorite devices. -
Question:
What type of users would benefit most from the ZK-TB21 amplifier?
Answer: The ZK-TB21 amplifier is perfect for users who prioritize high-quality sound in compact systems. Whether you're a car audio enthusiast looking to upgrade your vehicle’s sound system, or someone who wishes to enhance audio in small living spaces or even workshops, this amplifier is a versatile choice. Its combination of power, connectivity, and customization options makes it suitable for diverse applications. -
Question:
Can I use the ZK-TB21 amplifier for outdoor events?
Answer: Yes, the ZK-TB21 amplifier can be used for outdoor events, provided that it is sheltered from harsh weather conditions. Its powerful output allows it to fill significant spaces with sound, making it suitable for gatherings, parties, or picnics. However, ensure that it is connected to a reliable power source and consider the setup to maximize the audio experience outdoors. -
Question:
Is it possible to use the ZK-TB21 amplifier with headphones?
Answer: While the ZK-TB21 amplifier is primarily designed for speakers, users can utilize a headphone adapter connected via the AUX input for personal listening experiences. This can be ideal for late-night use or private listening sessions, allowing users to enjoy high-quality sound without disturbing others. Keep in mind that sound customization features such as bass and treble control will also enhance the headphone experience. -
Question:
Where can I buy the ZK-TB21 50W+50W+100W 2.1CH Bluetooth 5.0 Subwoofer Amplifier Board?
Answer: You can purchase the ZK-TB21 amplifier conveniently through Ubuy. They offer a reliable platform for buying this amplifier in Seychelles, ensuring that you receive a quality product with appropriate support. Ubuy’s platform is user-friendly, providing various options to suit your shopping needs, making it an excellent choice for your audio enhancement requirements.
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“The product received very good packaging & safe…Thank You”
16 June 2026 · via Trustpilot
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“Accurate delivery timing given”
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- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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SCR 555
Order now and get it around Friday, July 10
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
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Fastest cross-border delivery
Features & Benefits
- Peak output power of 50W+50W+100W.
- Supports Bluetooth 5.0 and 3.5mm AUX input.
- Equipped with a large heat sink for stable operation.
- Features TPA3116D2 chip for low distortion and high efficiency.
- Customizable sound with independent bass and treble adjustment knobs.
- Compatible with a wide range of power adapters (12-24V DC).