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Bluetooh Or Usb audio reciver for car amplifire?

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Default Bluetooh Or Usb audio reciver for car amplifire?

I have a motorcycle with a car stereo amplifier and I want to use a Windows 8 tablet (lenovo miix2 8) as my head unit/navigation.

◘My goal for this thread is to come up with a solution that uses the fewest amount of wires connected to the tablet.
◘I need to be able to charge the tablet and stream audio to my amp at the same time.

◘Ideas of products that might work:
1. Is having one USB cord going to the tablet, which it would send audio to like a sound card or something similar, and also charge it at the same time.
2. USB used just for charging, and use a bluetooth audio receiver for the amp.
3. I doubt there are compact products that could do this, but a wireless charge pad + a bluetooth audio reciveier to the amp(no wires at all).
(optional product, some kind of remote with a few basic buttons that would let change tracks or volume)

I honestly don't know anything about how usb ports work on tablets in general, but I think my tablet does allow for a device to be attached to it and charged at the same time, but I dont know for sure.

Any suggestions for products I may be able to make one of my three options work?
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I have had awful experience with Bluetooth for this situation. I can get it to connect to one BT device after a reboot, but if I want to swap to another BT device I have to reboot again. Sometimes I can get it to reconnect to a different device without a reboot but it requires so much fiddling and just waiting for the bloody thing to stop trying to connect to a device that isn't there, that a reboot is always the fastest and most assured option.

I love the concept of Bluetooth, but its usability renders it almost useless IMHO.
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usb seem best
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I think usb is gonna give you better sound. Not much, but will do the job

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