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Item #:
137623156
ZK-AS21P Bluetooth Amplifier Board 300W+300W+600W Output, 18-50V DC Wide Voltage Input, Vehicle Amplifier (External Potentiator)
Item #:
137623156
BDT 11170
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
In stock
Imported from USA store
QTY:
Only 5 items left in stock.
Order now and get it around Tuesday, July 14
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Elevate your sound experience with the ZK-AS21P 2.1 Channel Power Amplifier Board, delivering an astonishing 300W+300W+600W output and versatile connectivity options.
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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
Powerful Output
Delivers an impressive 300W+300W+600W output, ensuring a robust audio experience that enhances any vehicle sound system, catering to both casual listeners and audiophiles alike.
Wide Voltage Input
Supports a broad voltage range of 18-50V DC, providing versatile application across different vehicles and ensuring reliable performance, tackling common issues of power incompatibility.
External Potentiator
Features an external potentiator for fine-tuned volume control, allowing users to customize their listening experience effortlessly, enhancing user satisfaction and control over audio settings.
Product Details
- 2.1CH Subwoofer Audio Amplifier Board The ZK-AS21P amplifier board features a 2.1-channel design, allowing you to connect two passive speakers and a subwoofer. Equipped with treble/bass adjustment knobs, an independent subwoofer volume control, and a 20-200Hz frequency adjustment knob, it delivers optimized audio performance for audiophiles. Fine-tune the sound to experience deeper bass, crisper highs, and a more immersive, layered soundstage.
- HIFI-Grade Audio Amplifier Powered by dual TPA3255 amplifier chips—high-performance Class D modules that ensure ultra-low distortion across the entire frequency range while delivering crystal-clear HD audio. The PCB utilizes advanced windowed tin-sprayed traces to enhance power output, while six low-noise JRC 2068D preamplifiers refine sound quality, boost volume, and improve gain.
- Massive 300W×2 + 600W Output Packs 300W per channel (left/right) and a staggering 600W subwoofer output, effortlessly driving high-power speakers and subwoofers. Requires an 18-50V DC/10A+ power supply (wider voltage input: 18-50V DC). Note: Higher voltage/current and lower speaker impedance increase output power—always use a PSU rated above the amplifier’s operational demand.
- Versatile Audio Inputs Supports Bluetooth 5.1 (faster transmission, lossless decoding, <15m range), USB flash drives, USB sound card mode, and 3.5mm AUX input. Pro tip: Disconnect Bluetooth when using AUX for uninterrupted playback.
- Advanced Protection & Cooling Built-in safeguards: over/under-voltage, overheating, and short-circuit protection. A whisper-quiet, long-life cooling fan (stall-proof, noiseless) sits atop the amp chips, ensuring optimal heat dissipation and reliability.
| Voltage | 50 Volts (DC) |
| Maximum Supply Voltage | 50 Volts (DC) |
| Minimum Supply Voltage | 18 Volts (DC) |
| Mounting Type | Surface Mount |
| Number of Channels | 3 |
| Output Power | 1200 Watts |
| Supply Current | 12 Amps |
| Maximum Output Power | 600 watts |
| Item Dimensions | 9.06 x 5.91 x 2.56 inches (23 x 15 x 6.5 cm) |
| Material Type | PCB |
| Specification Met | RoHS |
| Manufacturer | Wuzhi Audio |
| Model | ZK-AS21P-W |
| Brand Name | Wuzhi Audio |
| UPC | 194852391642 |
| Part Number | ZK-AS21P-W |
| Included Components | Amplifier |
| Unit Count | 1 Count |
| Item dimensions L x W x H | 9.06 x 5.91 x 2.56 inches (23 x 15 x 6.5 cm) |
What's in the box
Amplifier
Who Should Buy?
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Car Audio Enthusiasts
Ideal for users seeking high-quality sound and power in their vehicle audio systems.
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DIY Projects
Perfect for hobbyists building custom audio solutions in various applications, like home theaters or workshops.
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Portable Sound Systems
Great choice for outdoor events needing a reliable and powerful amplifier that supports wide voltage input.
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Small Space Users
Not suitable for those with limited space, as the board may require significant installation area.
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Budding Beginners
Users without technical knowledge may struggle with installation and configuration of the amplifier board.
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Non-Vehicle Applications
Less ideal for home audio setups, as it is specifically designed for vehicle use.
Product Description
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is the output power of the ZK-AS21P Bluetooth Amplifier Board?
Answer: The ZK-AS21P Bluetooth Amplifier Board is capable of delivering a powerful output of 300W-600W. This makes it suitable for robust audio applications, whether you're installing it in a vehicle or using it for outdoor sound systems. The significant power output ensures that you can achieve loud and clear audio, perfect for music lovers who require quality sound at higher volumes. -
Question:
What is the voltage input range for the ZK-AS21P?
Answer: This amplifier board operates within a wide voltage input range of 18-50V DC. This feature provides versatility, allowing it to function efficiently in various setups, from cars to other audio systems. Users can easily integrate this amplifier into different environments, making it an excellent choice for both DIY projects and professional sound installations. -
Question:
Can I connect my Bluetooth devices to the ZK-AS21P?
Answer: Yes, the ZK-AS21P features Bluetooth connectivity, enabling seamless pairing with your smartphones, tablets, and other Bluetooth-enabled devices. This allows you to stream music wirelessly without the hassle of tangled wires, enhancing the convenience of your audio experience while on the go or during gatherings. -
Question:
Does the ZK-AS21P have an external potentiator?
Answer: Absolutely! The ZK-AS21P includes an external potentiator, allowing you to easily control the volume adjustment. This feature is particularly beneficial in vehicle applications where you need swift and accessible sound adjustments while driving, enhancing both safety and user experience. -
Question:
Is the ZK-AS21P suitable for outdoor use?
Answer: Yes, the ZK-AS21P is designed for versatility, making it suitable for outdoor use. With its high power output and Bluetooth capability, it can easily amplify your favorite music in outdoor settings like parties, picnics, or camping. Just connect it to a suitable power source and enjoy enhanced sound quality in all environments. -
Question:
What types of speakers can I connect to the ZK-AS21P?
Answer: You can connect a variety of speakers to the ZK-AS21P, including passive speakers that match the amplifier's power specifications. For the best audio experience, choose speakers that can handle the output range, allowing you to achieve superior sound quality without distortion, whether for home systems or mobile setups. -
Question:
How compact is the ZK-AS21P Bluetooth Amplifier Board?
Answer: The ZK-AS21P is designed with a compact form factor, making it easy to install in tight spaces, such as under the dashboard of a vehicle or within custom audio enclosures. Its small size does not compromise performance, ensuring that you can enjoy high-quality sound without the bulk of larger amplifiers. -
Question:
Can I customize the sound settings with the ZK-AS21P?
Answer: Yes, the ZK-AS21P allows for customization of sound settings through its user-friendly interface, including the external potentiator. Users have the flexibility to fine-tune volume levels according to personal preference and specific audio environments, making it perfect for tailored sound experiences in any setting. -
Question:
Where can I buy the ZK-AS21P Bluetooth Amplifier Board in Bangladesh?
Answer: You can purchase the ZK-AS21P Bluetooth Amplifier Board from Ubuy in Bangladesh. Ubuy offers a wide selection of electronics, including quality amplifier boards, and provides a simple and secure shopping platform for your needs.
Wuzhi Audio Amplifiers Editorial Review
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Mohd
Verified buyer
“The product received very good packaging & safe…Thank You”
16 June 2026 · via Trustpilot
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Shawati
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“Accurate delivery timing given”
16 June 2026 · via Trustpilot
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Youcef
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“Not madly expensive like I thought, and much quicker than promised.”
15 June 2026 · via Trustpilot
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“Never dealt with Ubuy before, but everything worked out great. Seamless cross border purchasing and shipping. Thanks!”
6/7/2026 · via Trustpilot
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Kwame
Verified buyer
“The process was smooth, with clear communication and timelines. This was my 1st purchase and I am really impressed. I will definitely be coming back.”
12 June 2026 · via Trustpilot
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BDT 11170
Order now and get it around Tuesday, July 14
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:
Only 5 items left in stock.
Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
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Fastest cross-border delivery
Features & Benefits
- High output: 300W per channel and 600W subwoofer for powerful sound.
- Supports various inputs: Bluetooth, AUX, USB for easy device connectivity.
- DIY-friendly: Multiple extension interfaces for customizing your audio system.
- HIFI-grade audio quality: Low distortion and enhanced sound from dual TPA3255 chips.
- Advanced protection: Safeguards against overheating and short circuits for reliability.
- User-friendly controls: Treble/bass adjustment and subwoofer volume control for tailored audio.
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