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ZK-LT21 Blue-tooth compatible 5.1 Audio Digital Power Amplifier Board Module 2.1 Channel 15WX2+30W With Subwoofer 30W+30W 15W+15W

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Your business with me will be a pleasant experience for you. I am dedicated to bring joy, safe and top-quality products for you. All the products I offer in my store come with fashion style, superior quality but cheaper price all the time. When you place order, please do not hesitate to leave more detailed requirements you want, and then I will arrange the goods for you as soon as possible. First time, we do business; next time, we become friends. Hope you enjoy the whole process!



1: Wide range of applications

2: APP has a timer shutdown function

3: Supports custom 10-segment sound effects to be adjusted arbitrarily to make up for the deficiencies, so that different speakers can achieve better sound effects.

4: The mechanical switch is turned off with one turn, no need to wait for a long time, which is convenient and fast.

5: Support Wuzhi Audio APP. Modify and change for Blue-tooth name, password setting, prompt volume adjustment, on/off prompt tone, sleep aid, sound effect selection + custom sound effect, U disk playlist


1、Model: ZK-LT21

2、Name: 2.1, 15WX2+30W Blue-tooth audio power amplifier with subwoofer

3、Adapter power supply: 9-24V/3A (can not be connected to AC)

4、Blue-tooth version: 5.1

5、Audio input: BT+AUX+USB+USB sound card

6、Audio output: left channel 15W + right channel 15W + subwoofer 30W

7、Volume adjustment: classic mechanical knob (with volume scale), stepless adjustment

8、Switch machine: classic mechanical switch, one turn switch machine, no need to wait for a long time.

9、Adapter speaker: 10-50W 4-8Ω

10、Protection mechanism: overheating, overcurrent, short circuit, anti-static protection

11、Product weight: net weight 66g, including packaging 102g

12、Dimensions: 76*60*22mm

Special Feature

Support Wuzhi Audio APP. Modify and change the blue-tooth name, password setting, volume adjustment of prompt sound, on/off prompt sound, sleep aid, sound effect selection + custom sound effect, U disk playlist.


It is recommended to use an 8Ω speaker and power supply of 9-24VDC without overvoltage.

If driving a 4Ω speaker, the power supply cannot exceed 12V.


We offer good quality PC Board, Video Game, Multi Game, Multi Cartridge, Vending machine, Pinball Machine, Kiddy Rides, ABS cabinet available for 21"~25"monitor, heavy steel cabinet for 25"~29" monitor with Jamma connector, and some spare parts, Coin Acceptor, pushbutton, joystick, etc. For Amusement machines.

Please contact to me if you are interested in our products, we will send you the datas in details.

1. 100% of delivered products are tested before shipping by QC . We will send the items within 1~6 working days once your payment is completed.
2. Our price does not include any import taxes due to different country have different policy for import tax and buyers are responsible for customs duties.
3. We do not guarantee delivery time on all international shipments due to differences in customs clearing times in individual countries, which may affect how quickly your product is inspected.Singapore post delivery time is 15-80 days .Some countries like RUSSIA and BRAZIL may take longer .If you have not received your shipment within 30 days from payment, please contact us. We will track the shipment and get back to you as soon as possible with a reply. Pls ask us to extend the delivery date instead of making dispute . 
1. Your satisfaction and positive feedback is very important to us. Please take a few seconds to leave positive feedback (5 stars) if you are satisfied with our items and services.
2. Please contact us before leaving neutral(3 stars) or negative(1-2 stars) feedback. Negative feedback does not solve anything. We are always willing to work things out !
Buyer can customize the colors for the item.You just need leave a note to us when you make the payment.And we will manage the order for you.You can also send us a message to customize the colors.But the message should sent before we ship the goods out.Once we ship the goods out.We can't change the colors and also can't cancel the purchase, if we doesn't get your Customize Require. We will ship same as the first picture (Main picture) shows to you.
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