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Description
ZK-502C HIFI Wireless Bluetooth 5.0 TPA3116 Digital Power Audio Amplifier Board 50W X 2 Stereo AMP Amplificador, ZK-502C With Shell, ZK-502C Without Shell1. Chip solution: TPA3116D2 (with AM interference suppression function) 2. With or without filter: Yes (the sound is more mellow and clear after filtering) 3. Adapted supply voltage: 5~27V 4. Adapted speakers: 30W~200W, 4ohms, 8ohms 5. Number of channels: left and right dual channels (stereo) 6. Bluetooth version: 5. 0 7. Bluetooth transmission distance: 15 meters (unobstructed) 8. Protection mechanism: overvoltage, undervoltage, overheating, DC
1. Chip solution: TPA3116D2 (with AM interference suppression function)
2. With or without filter: Yes (the sound is more mellow and clear after filtering)
3. Adapted supply voltage: 5~27V
4. Adapted speakers: 30W~200W, 4ohms, 8ohms
5. Number of channels: left and right dual channels (stereo)
6. Bluetooth version: 5.0
7. Bluetooth transmission distance: 15 meters (unobstructed)
8. Protection mechanism: overvoltage, undervoltage, overheating, DC detection, short circuit protection
9. Tip: Only when the audio input is sufficient and the power supply voltage/current is sufficient, there will be sufficient output power. The higher the power supply voltage, the higher the relative power, and speakers with different impedances will have different output powers. In the case of sufficient voltage and current, the greater the ohms of the speaker, the lower the relative sound power, please pay attention!
10. Power supply voltage:
-12V ------ 8 ohm speaker/12W (left channel) + 12W (right channel), 4 ohm speaker/20W+ 20W
-15V ------ 8 ohms/18+ 18W, 4 ohms/more than 30 + 30W
-19V ------ 8 ohms/32 + 32W, 4 ohms/more than 45 + 45W
-24V ------ 8 ohms/38 + 38W, 4 ohms/more than 55 + 55W
Specification:
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- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
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4.1 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 5
Great wipers!
Size: 24"+20"+12LP(HOOK)
These wipers are affordable, easy to install to install, fit great and work really well!
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Reviewed in the United States on April 12, 2026
★★★★★ 5
Perfect replacement wipers
Size: 26"+14"+10-1(PTB)
These are fantastic and fit my car perfectly. I was a little worried but they went on easily and were the perfect replacement. They fit against the glass and don't cause any smearing. I was thrilled to get them so quickly because we had another storm coming and these worked fantastically. I can see out of my windshield. If you're on the fence about these, go ahead and order, they work great.
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Reviewed in the United States on March 18, 2026
★★★★★ 5
Great replacement wiper blades.
Size: 26"+17"+12JP(HOOK)
These were great wiper replacement for my car, very easy to install and way cheaper that buying them at a auto parts store.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Impressive performance at an impressive price
Size: 26"+17"+14BP(HOOK)
I had one damaged wiper, so I decided to replace all 3 on my Subaru Outback. I have read a lot of positive information regarding "silicone" wipers, so I settled on this complete kit as it was a good value for the price and received many positive reviews.
They come well packaged, yet I was concerned that the longest blade had to be bent significantly to fit in the odd shaped box. However, once installed, that blade straightened out and conformed snuggly to the contour of the windshield.
True to the claim, it does take about 30 seconds to install each blade (that is if you understand the diagram and attempt to do so correctly). I had no issues and each blade snapped securely in place. They appear to be well made and durable. The design is clean and they look good on my vehicle.
I've been using them for 2 months now and they work well. They clear the windshield without streaking or chatter. They seem to work as well as other types I have used. The ultimate test will be how long they last. So far, I am very pleased with my choice.
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Reviewed in the United States on April 21, 2026
★★★★★ 4
Easy Installation Wipers!
Size: 26"+19"+14BP(HOOK)
Just installed them on my Outback, simple straightforward install. The instructions were simple and they seem to fit well. These wipers were more compatible than the old ones, and the appearance look like they are original!
When I purchased these wipers I thought I had purchased the Rain-X wiper replacements, but they were not. These wipers seem to work when I used the windshield cleaner with the wipers. The windshield cleaning seems effortless and without any noise.
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Reviewed in the United States on May 21, 2026