I'm in exactly the same boat. TV audio and bluetooth adapter audio into the Lepai. No matter which input on the Lepai I use for which device, the bluetooth output always "wins" -- perhaps because it's a hotter output? I'd actually like the TV to always "win" when it's on. The TV output goes totally dead when the TV is turned off -- but apparently the bluetooth adapter always outputs a voltage, even when there's no audio there, but unplugging it from power or from the input allows the TV to play through.
Maybe there's some kind of a sensor in the Lepai that "switches" between the two inputs, or maybe the behavior is simply due to the electrical characteristics of the two inputs. I'm leaning toward there being some kind of sensing, because when I plug in the TV audio with the bluetooth audio running, there's *no change whatsoever* to the bluetooth audio. Whereas if the TV audio is going and I plug in the bluetooth adapter input, the TV audio is attenuated down to almost nothing.
I'd *really* like to be able to be lazy and not have to plug/unplug or install an inline switch for the bluetooth adapter. I guess one solution would be an "inverse" power switcher -- that would power down the bluetooth adapter whenever it senses the TV is on, and power it back on when the tv is off -- though I don't think such a product exists, though If pressed, I guess I could build one (!) -- that would have the added benefit of not wasting (a tiny amount) of power with the bluetooth adapter when it's not needed.
If anyone has any ideas, I'd *love* to hear them!
Okay, I see your point, though I don't (entirely) understand why the TV audio then works when power is removed from the bluetooth adapter. I also just tried an experiment where I ran the audio directly from my tablet to the lepai, and the TV audio and tablet audio are (more or less) the same volume, though both attenuate slightly. So I guess if the impedance is closely matched between the two sources, the interference is minimal?
I guess I'll have to find an auto-switch (affordable ones that actually work are like hen's teeth) -- or build one -- or I guess just install a switch and walk over to the TV when I want to switch inputs...
The Lepai 2020+ is so incredible (especially for it's size and the money) I don't think I'll ever go back to a "regular" receiver.