ZK-AS21 2.1 CH TPA3251 Bluetooth Digital audio Power Amplifier Board 220WX2+350W
Item Description
Product Feature:
1: Wide range of applications
2: The appearance is simple and beautiful
3: APP has comprehensive functions
4: Real stepless tuning, not digital multi-stage grading adjustment.
5: The mechanical switch can be turned off with one turn, no need to wait for a long time, which is convenient and fast.
 
Product name: 2.1 channel bluetooth audio power amplifier module Product model: ZK-AS21
Number of channels: 2.1 channels (left channel + right channel + subwoofer)
Input method: AUX+Bluetooth+U disk+USB sound card (dial button to switch modes and songs)
Bluetooth version: 5.1
Power amplifier chip: TPA3251D2
Adapter speakers: left and right channels 30-220W, 3-8Ω subwoofer 30-350W 2-8Ω
Output power: left and right channels ≤ 220w subwoofer ≤ 350W
Adapter power supply: DC 12~38v, ≥10A
Protection mechanism: anti-reverse connection, undervoltage, overheating, overcurrent, short circuit protection (automatic recovery, no need to restart)
Switch mode: mechanical switch (no need to long press and wait)
Voltage gain: 30dB
Product weight: net weight 346g, including packaging 408g
Product size: 141*131*27mm
Tip: Only when the audio signal input is large enough and the power supply voltage/current is large enough, will there be enough output power!
The higher the power supply voltage, the greater the output power, and the smaller the speaker impedance, the greater the output power!
Please make sure that the power of the adapted power supply is greater than the actual working power of the power amplifier!
 
Package list:
1* 2.1 channel TPA3251 Bluetooth digital power amplifier board module

1. Customer satisfaction is our top goal. We believe our items are so outstanding. All products are quality checked. They are new and in good condition when shipped to our customers. We are convinced you will be happy with your Purchase.

2. If product is defective or damage upon arrival, or wrong product shipped, please contact us immediately. Returns accepted within 14 days of delivery date and item must be in original new condition, not worn or altered in any way with attached tags & wrap. Otherwise deal is final. Return shipping must be paid by buyer.

3. Please contact us first if you have any problems/questions/concerns. We will be happy to resolve any issues you may have in a cordial and friendly manner.

4. We appreciate your Postive Feedback, and will do the same in return. DO NOT leave negative feedback without first communication with us. Ple

1. Customer satisfaction is our top goal. We believe our items are so outstanding. All products are quality checked. They are new and in good condition when shipped to our customers. We are convinced you will be happy with your Purchase.

2. If product is defective or damage upon arrival, or wrong product shipped, please contact us immediately. Returns accepted within 14 days of delivery date and item must be in original new condition, not worn or altered in any way with attached tags & wrap. Otherwise deal is final. Return shipping must be paid by buyer.

3. Please contact us first if you have any problems/questions/concerns. We will be happy to resolve any issues you may have in a cordial and friendly manner.

4. We appreciate your Postive Feedback, and will do the same in return. DO NOT leave negative feedback without first communication

When you satisfied with our product and services please leave us positive feedback.

If a problem occurs, contact us immediately with any email request. Just contact us using the " Ask the seller a question" link on eBay.We will maill bakc within 24hours

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