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ZK-TB21 TPA3116D2 bluetooth 5.0 Subwoofer Amplifier Board 50WX2+100W 2.1 Channel Power Audio Stereo Bass AMP
US$16.99 US$36.99

Q: can this be used with car audio amp?

Asked by BG524151643 on 2020-11-27 20:49:11

Semparithi Sure. It's powered by 12 to 24 v DC. You can try.

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DANIU HD 2.0MP 1000X 3 IN 1 USB Android Type-c Microscope Electronic Digital Microscope 1920*1080P Resolution For Mac Android Windows Vista System
US$18.99 US$23.99

Q: What Android App do I use for this? Where can I get the Android App?

Asked by robjahnke on 2019-04-23 09:51:20

Semparithi MScopes in play store works fine for me.

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ZK-TB21 TPA3116D2 bluetooth 5.0 Subwoofer Amplifier Board 50WX2+100W 2.1 Channel Power Audio Stereo Bass AMP
US$16.99 US$36.99

Q: Can I connect my Denon PMA 520 AE to this for subwoofer and connect Right and Left channel from this amp? I don't have sub option in the Denon amp.

Asked by sudhiramakrishnan17 on 2021-04-21 10:10:04

Semparithi Possible. But I would prefer mono amplifier for single subwoofer output.

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ZK-TB21 TPA3116D2 bluetooth 5.0 Subwoofer Amplifier Board 50WX2+100W 2.1 Channel Power Audio Stereo Bass AMP
US$16.99 US$36.99

Q: Requirements: 12-24v/5a and above. QUESTION IS: Can I use 12v-3.7 amp?

Asked by BG191151747 on 2021-11-18 11:14:13

Semparithi Yes you can. But output power will also be low.

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ZK-TB21 TPA3116D2 bluetooth 5.0 Subwoofer Amplifier Board 50WX2+100W 2.1 Channel Power Audio Stereo Bass AMP
US$16.99 US$36.99

Q: Does this also have the awful "the bluetooth device is ready to pair" voice prompts, or not?

Asked by rjscosta on 2020-10-11 05:23:57

Semparithi No voice prompt. just a ding dong sound when connecting Bluetooth device.

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ZK-TB21 TPA3116D2 bluetooth 5.0 Subwoofer Amplifier Board 50WX2+100W 2.1 Channel Power Audio Stereo Bass AMP
US$16.99 US$36.99

Q: Is the main volume the volume for subwoofer too, or is subwoofer volume full independent from main volume? (Is the subwoofer volume increased and decreased with the main volume after setting the right volume with subwoofer volume?)

Asked by Infinity on 2020-08-23 21:44:08

Semparithi sub woofer volume is adjustable separately.

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