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Item #:
202455930
ZK-AS21P Bluetooth Amplifier Board - 300W+300W+600W Output, 18-50V DC Wide Voltage Input, Vehicle Amplifier ZK-AS21P
Item #:
202455930
SCR 1583
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from JP
In stock
Imported from Japan store
QTY:
Only 17 items left in stock.
This product is not Fulfilled by Ubuy and can take minimum 10 days in delivery. We might cancel the product from the order and refund you if any issue arise with the delivery of this product.
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The ZK-AS21P amplifier board features a 2.1-channel design, allowing you to connect two passive speakers and a subwoofer, delivering optimized audio performance for audiophiles.
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Note: Step Down Voltage Transformer required for using electronics products of JAPAN store (100 V). Recommended power converters Buy Now.
What Stands Out
Powerful Output
Delivers an impressive 300W per channel output, ensuring high-quality audio performance for any car sound system, providing an immersive listening experience.
Wide Voltage Range
Supports an input voltage of 18-50V DC, making it versatile for various applications, ensuring compatibility with different vehicle electrical systems.
User-Friendly Design
Equipped with an external potentiator for easy volume control, allowing users to adjust settings effortlessly while driving, enhancing user convenience and safety.
Product Details
- The 2.1CH subwoofer audio amplifier board ZK-AS21P amplifier board features a 2.1 channel design that allows you to connect two passive speakers and subwoofers. Featuring treble/bass adjustment knob, independent subwoofer volume control, and 20-200Hz frequency adjustment knob to provide audio fans optimized audio performance. Fine-tune your sound to experience deeper bass, clearer treble and more immersive layered sound stage
- HIFI grade audio amplifier with dual TPA3255 amp chip High performance class D modules deliver crystal clear HD audio while ensuring ultra-low distortion throughout the entire frequency range. The PCB utilizes advanced Windows Spray Tracing to enhance its output, while six low-noise NE5532 preamplifiers reinforce sound quality, increase volume and increase gain
- High capacity 300W x 2 + 600W output pack 300W Left/Right per channel and an amazing 600W subwoofer output. Easily drive high power speakers and subwoofers. Requires 18-50V DC/10A+ power supply wider voltage input: 18-50V DC Note: High voltage/current, lower speaker impedance will increase output power. Always use PSU that exceeds amplifier operating requirements
- Versatile audio input supports Bluetooth 5.1 fast transmission, lossless decoding, <15m range, USB flash drive, USB sound card mode, and 3.5mm AUX input. PRO TIPS: If you use AUX, disconnect the Bluetooth and stop playing
- ADVANCED PROTECTION & COOLING BUILT-IN SAFEGUARD: Over Voltage/Low Voltage, Overheating and Short Circuit Protection. Whisper quiet and long lasting cooling fan stall proof, noiseless on the amplifier chip to ensure optimal heat dissipation and reliability
| Voltage | 24 Volts (DC) |
| Maximum Supply Voltage | 50 Volts ( DC ) |
| Minimum Supply Voltage | 18 Volts |
| Mounting Type | Surface Mount |
| Number of Channels | 3 |
| Output Power | 1200 watts |
| Supply Current | 10 Amps |
| Maximum Output Power | 1200 watts |
| Item dimensions | 15 x 14 x 4 cm |
| Material Type | pcb |
| Manufacturer | Wuzhi Audio |
| Model | ZK-AS21P |
| Brand Name | Wuzhi Audio |
| Unit Count | 1.0 Count |
| UPC | 194852391567 |
| Incoraded Components | Amplifier |
| Part Number | ZK-AS21P |
| Item Dimensions L x W x H | 15 x 14 x 4 cm |
Who Should Buy?
-
Car Audio Enthusiasts
Ideal for users seeking to significantly enhance sound quality and power in their vehicle audio systems.
-
DIY Audio Projects
Great for hobbyists who want to build custom audio solutions with adjustable features and Bluetooth connectivity.
-
Home theater systems
Perfect for integrating powerful bass and treble outputs into home audio setups for an immersive experience.
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Casual Listeners
May be too sophisticated and powerful for users who only want basic audio enhancement without complex features.
Product Description
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What power supply is required for the ZK-AS21P amplifier?
Answer: It requires an 18-50V DC power supply rated at 10A or higher for optimal performance. -
Question:
Can I connect Bluetooth devices directly to this amplifier?
Answer: Yes, it supports Bluetooth 5.1 for seamless wireless audio connection. -
Question:
What type of speakers can be used with this amplifier?
Answer: You can connect two passive speakers and a subwoofer, ensuring left/right channels have ≥4 ohms and subwoofer ≥2 ohms.
Wuzhi Audio Editorial Review
No editorial reviews found
Customer Reviews & Ratings
6 customers ratings
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5 Star
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1 Star
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Pros
- Powerful 300W output
- Wide voltage input range
- User-friendly external potentiator
- Great sound quality
- Compact design
Cons
- Setup can be slightly tricky.
Platform Trust & Buyer Confidence
MA
Mohammad
Verified buyer
“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
CK
Chitra
Verified buyer
“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
K
kund
Verified buyer
“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
23-Jul-26 · via Trustpilot
OO
Onesi
Verified buyer
“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
22 July 2026 · via Trustpilot
SJ
SAO JOHN
Verified buyer
“Ubuy is a great online platform to buy stuff. Reliable, fast delivery time and great value for money. I've been using Ubuy online shopping platform for three years now and will continue to do so.”
23 July 2026 · via Trustpilot
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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 1583
This product is not Fulfilled by Ubuy and can take minimum 10 days in delivery. We might cancel the product from the order and refund you if any issue arise with the delivery of this product.
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 17 items left in stock.
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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
- Powerful output with 300W per channel and 600W subwoofer capacity.
- Supports Bluetooth 5.1, USB flash drives, and AUX input for versatile audio connections.
- Designed for DIY enthusiasts to easily build customized audio systems.
- Equipped with treble/bass adjustment knobs for personalized sound tuning.
- Includes advanced protection features and a cooling fan for reliability and performance.
- Ideal for achieving high-quality audio in both portable and home setups.
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