What is the Wuzhi Audio ZK-502L Power Amplifier Board?

The Wuzhi Audio ZK-502L is a Class D power amplifier board designed for DIY wireless speaker projects. It efficiently converts low-power signals into high-power audio output, making it suitable for various audio applications. This module is ideal for creators looking to build their wireless speakers, as it combines high performance with compact design, allowing for seamless integration into a range of audio systems. The ZK-502L can easily drive speakers, enhancing your music experience whether at home, in a workshop, or during outdoor activities.

What are the power specifications of the ZK-502L?

The Wuzhi Audio ZK-502L features a power output that can typically reach up to 50W per channel when supplied with appropriate voltage. This efficiency is a hallmark of Class D amplifiers, allowing for substantial output without excessive heat production. Users can enjoy robust sound quality at higher volumes, making it a great choice for custom builds where powerful audio output is desired without needing bulky equipment. Ideal usage scenarios include home audio systems, portable speaker projects, and even PA applications.

How does the Class D technology benefit audio performance?

Class D amplification technology delivers superior audio performance by using a switching method that enhances efficiency, resulting in less heat generation and more power conservation. This allows users to achieve high fidelity sound even with battery-powered setups. It's particularly beneficial for DIY projects, ensuring that the audio remains clean and distortion-free at high volumes. This makes the ZK-502L an excellent fit for building high-quality wireless speakers or enhancing existing audio setups without sacrificing sound quality.

Can this amplifier board support Bluetooth connectivity?

While the Wuzhi Audio ZK-502L amplifier board itself does not come with built-in Bluetooth functionality, it can easily be paired with a Bluetooth receiver module. This allows you to create a fully wireless setup that transmits audio from your devices to the amplifier seamlessly. This flexibility makes it perfect for DIY enthusiasts looking to create their own wireless speaker systems. Utilizing a Bluetooth receiver expands the versatility of the ZK-502L, letting you stream music from smartphones, tablets, or laptops.

What types of speakers can I use with the ZK-502L?

The ZK-502L is compatible with a variety of speakers, typically ranging from 4 to 8 ohms in impedance. This suits most standard speaker models, making it a versatile choice for DIY audio projects. Users can connect it to bookshelf speakers, subwoofers, or any custom-built speaker enclosures for tailored audio experiences. Whether you're designing a portable speaker system or enhancing a home audio setup, the ZK-502L will provide the necessary power for impressive sound output.

What input voltage is required for optimal performance?

To achieve optimal performance from the Wuzhi Audio ZK-502L amplifier board, an input voltage ranging from 12V to 24V is recommended. Operating within this voltage range ensures efficient power management and maximizes audio output quality. This flexibility allows users to utilize various power sources, including battery packs or dedicated power supplies, which is particularly useful in DIY projects where space and design considerations are key.

Is there a heat sink required for this amplifier board?

Although the Wuzhi Audio ZK-502L features a Class D design that minimizes heat generation, incorporating a heat sink is advisable for prolonged use at higher output levels. This helps maintain optimal operating temperatures, ensuring reliability and performance over time. In DIY applications, adding a heat sink can enhance stability, especially in compact speaker builds where airflow might be limited, making it a valuable addition to any project involving the ZK-502L.

How do I connect the ZK-502L to my audio source?

Connecting the Wuzhi Audio ZK-502L amplifier board to your audio source is straightforward. You will need to wire the audio input from your source device to the designated input terminals on the board. This might involve soldering or using terminal blocks for a secure connection. Once set up, this amplifier will take the incoming audio signal and amplify it for output to your chosen speakers, making it perfect for DIY wireless speaker setups or any custom audio project.

What are the dimensions and weight of the ZK-502L?

The Wuzhi Audio ZK-502L amplifier board is designed to be compact, typically measuring around 9cm by 7cm, with a low weight of approximately 200g. This compact form factor makes it easy to integrate into various DIY projects without taking up much space. Users can easily fit it into portable speaker enclosures, bookshelf systems, or other custom builds where size and weight are important considerations. Its lightweight design, combined with impressive performance, makes the ZK-502L a go-to for audio enthusiasts.

如何從 Ubuy 在線購物 Wuzhi Audio ZK-502L Power Amplifier Board Class D？

從 Ubuy 在線購物 Wuzhi Audio ZK-502L Power Amplifier Board Class D 非常簡單。. 您只需搜索產品，在結賬時選擇運輸方式，然後將其運送到您所在的位置。

Wuzhi Audio ZK-502L Power Amplifier Board Class D 可以在 Hong Kong 在線購物嗎？

是的，您可以在 Ubuy Hong Kong 以合理的價格購買該產品。. Wuzhi Audio ZK-502L Power Amplifier Board Class D 在本地不可用，但您可以信任我們的快遞服務。

下訂單後需要多長時間才能收到產品？

您訂購的產品的交貨時間根據您訂購的商品和您選擇的運輸方式而有所不同。. 結賬時會提到預計送貨時間，所以購物時請放心。

UwayKey 觀看原文

Wuzhi Audio ZK-502L Power Amplifier Board Class D AMP Module for DIY Wireless Speaker (ZK-502L)

This little thing smaller than a card can output up to 50w*2 power (peak power). User Can Directly Connect with Wireless Bluetooth 5.0 without Password. The Illustration Of Each Interface Is Printed On The Protective Plate, Making It Easy To Install Even Without Instructions. This BT Amp Is Designed with Protective Case, Over-heat Protection, Short-circuit Protection

UwayKey

物品 #: 36178318

Wuzhi Audio ZK-502L Power Amplifier Board Class D AMP Module for DIY Wireless Speaker (ZK-502L)

Q: Where can I buy Wuzhi Audio ZK-502L Power Amplifier Board Class D AMP Module For DIY Wireless Speaker in Hong Kong?

You can purchase the Wuzhi Audio ZK-502L Power Amplifier Board at Ubuy. Ubuy provides a user-friendly shopping platform where you can find this specific model among various audio electronic products. With diverse payment options and promotional offers, Ubuy stands out as a preferred option for acquiring this amplifier board in Hong Kong.

88% of respondents would recommend this to a friend

物品 #: 36178318

HKD 167

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現在訂購，約可在下列時間收貨：星期五, 十二月 18

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This little thing smaller than a card can output up to 50w*2 power (peak power). User Can Directly Connect with Wireless Bluetooth 5.0 without Password. The Illustration Of Each Interface Is Printed On The Protective Plate, Making It Easy To Install Even Without Instructions. This BT Amp Is Designed with Protective Case, Over-heat Protection, Short-circuit Protection

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Note: Step Down Voltage Transformer required for using electronics products of 美國 store (110-120). Recommended power converters 立即購買.

What Stands Out

Class D Efficiency

The ZK-502L utilizes Class D technology for high efficiency, reducing power consumption while delivering optimal sound quality, making it ideal for DIY wireless speaker projects.

Compact Design

Its small form factor allows for easy integration into various devices, perfect for compact speaker setups without compromising on audio performance.

DIY Friendly

Designed for DIY enthusiasts, the Wuzhi Audio ZK-502L offers a user-friendly interface and clear instructions, empowering users to build tailored audio solutions that meet their needs.

產品詳情

Output power of up to 50w*2 (peak power) and wide voltage input of DC 5-24V
Bluetooth 5.0 for direct wireless connection without a password
Easy installation with illustrated interfaces and short start-up sound for convenience
Protective features include over-heat protection and short-circuit protection
Committed to quality and customer service with 24/7 support
XY-Y50L Bluetooth Power Amplifier Board 50W+50W(Peak Power), Mini Amp Module Dual Channel with Remote Control

Voltage	24 volts
Maximum Supply Voltage	24 volts_of_direct_current
Minimum Supply Voltage	5 volts_of_direct_current
Mounting Type	Surface Mount
Number of Channels	2
Package Type Name	Box
Supply Current	2.5 A
Maximum Output Power	50 watts
Item Dimensions	2.16 x 1.49 x 0.66 inches (5.5 x 3.8 x 1.7 cm)
Manufacturer	UWAYKEY
Model	ZK-502L
Brand Name	UwayKey
Number of Items	1
Unit Count	1 Count
UPC	194852389953 194852394544 194852394575
Number of Packs	1
Item Weight	10 g
Part Number	ZK-502L
Item dimensions L x W x H	2.16 x 1.49 x 0.66 inches (5.5 x 3.8 x 1.7 cm)

Who Should Buy?

DIY Audio Enthusiasts
Ideal for hobbyists looking to build custom sound systems or wireless speakers with compact and efficient amplification.
Budget-Conscious Users
Great option for those needing an affordable amplifier without compromising on sound quality for everyday listening.
Compact Spaces
Perfect for users with limited space who need a small, efficient amplifier that delivers good performance.

High-End Audiophiles
May not satisfy critical listeners seeking the ultimate sound quality and advanced features in their audio equipment.

產品敘述

Wuzhi Audio ZK-502L Power Amplifier Board Class D AMP Module for DIY Wireless Speaker (ZK-502L)

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客戶問題與解答

題: 如何從 Ubuy 在線購物 Wuzhi Audio ZK-502L Power Amplifier Board Class D？

回答: 從 Ubuy 在線購物 Wuzhi Audio ZK-502L Power Amplifier Board Class D 非常簡單。. 您只需搜索產品，在結賬時選擇運輸方式，然後將其運送到您所在的位置。
題: Wuzhi Audio ZK-502L Power Amplifier Board Class D 可以在 Hong Kong 在線購物嗎？

回答: 是的，您可以在 Ubuy Hong Kong 以合理的價格購買該產品。. Wuzhi Audio ZK-502L Power Amplifier Board Class D 在本地不可用，但您可以信任我們的快遞服務。
題: 下訂單後需要多長時間才能收到產品？

回答: 您訂購的產品的交貨時間根據您訂購的商品和您選擇的運輸方式而有所不同。. 結賬時會提到預計送貨時間，所以購物時請放心。

UwayKey Amplifiers Editorial Review

The Whuzi Mini Bluetooth Amplifier has been well received by customers who were impressed by its power output and sound quality for such a tiny amp. It is compact, easy to assemble and comes with a laser cut protective plates and screwdriver. While some felt that the Bluetooth connection range could have been better, others used a homemade antenna to improve it. Customers recommended using an old laptop brick and higher voltages for best performance. The amp was paired with various speakers, from 5in bookshelf speakers to huge old 80s style stereo speakers, and overall, customers were pleased with the sound quality for the price. However, some recommended installing a separate power switch to conserve battery life when using as a portable Bluetooth speaker. Finally, a few customers received units without heat sinks, which could be a concern when using for prolonged periods at high volume.

Customer Reviews & Ratings

4.0

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優點

Powerful for such a tiny amp
Compact and easy to assemble
Good sound quality for the price
Can be used with various speakers
Comes with protective plates and screwdriver

缺點

Bluetooth connection range could be better

Platform Trust & Buyer Confidence

3.8/5 120 reviews

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F Zhang

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“Good product, and smooth delivery!”

18-Jul-26 · via Trustpilot

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“Great products and services”

17 April 2026 · via Trustpilot

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“Ubuy Hong Kong is a game-changer. I was looking for a specific American brand that doesn't ship to Asia, and Ubuy had it in stock. The selection of global products is incredible. It saves me the hassle of using freight forwarders or asking friends to bring items over. The process was seamless from checkout to delivery”

6 July 2026 · via Trustpilot

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“I?m always nervous buying electronics and skincare online, but Ubuy Hong Kong delivered exactly what I ordered and it was 100% genuine. It?s refreshing to find a platform that you can actually trust with premium brands. Will definitely be a returning customer.”

3 July 2026 · via Trustpilot

Sam

Verified buyer

“Great product, good packing, the goods arrived quickly and well protected.”

6 June 2026 · via Trustpilot

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HKD 167

現在訂購，約可在下列時間收貨：星期五, 十二月 18

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特色和優勢

Output power of up to 50w*2
Directly connect with wireless Bluetooth 5.0 without password
Easy installation with interface illustration printed on protective plate
Designed with over-heat and short-circuit protection
Commitment to quality and customer service
24/7 customer support with 100% satisfactory solution

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Wuzhi Audio ZK-502L Power Amplifier Board Class D AMP Module for DIY Wireless Speaker (ZK-502L)

HKD 167

Fast Shipping

Free Return*

Secure Packaging

100% Original Products

PCI DSS Compliance

ISO 27001 Certified

What Stands Out

產品詳情

Who Should Buy?

產品敘述

客戶問題與解答

UwayKey Amplifiers Editorial Review

Customer Reviews & Ratings

評價此產品

優點

缺點

Platform Trust & Buyer Confidence

WHY SHOP WITH US

Product Price History

重要資訊

HKD 167

特色和優勢

Ubuy Assurance

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Free
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