Line level transmitter with separate L/R receivers possible?

not seen the ALTO Professional Bluetooth Total links before. Thanks for pointing me to them!

I guess they use tws? unless its old before tws and uses a firmware hack that earlier BT wireless speaker gear did. Like a past bamboo portable super capacitor powered portable speaker on Crowd Supply - For the Greater Goods

For the price of one, i could get 2x qcc3008 boards which if im putting amp in a box anyway, would be a lot cheaper. Alto BT Total looks like a nice ready made option. same sound quality.
 
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