[fritsch]

So essentially with passthrough disabled LPCM will be sent with all 5.1 channels just won't see the useless lights on receiver "DTS, DTS-HDMA, etc."

Hehe - exactly :-). Also note: Some AVRs do special things when they receive DTS / DTS-HD - e.g. boosting something, a sound some people like. But it's most likely the light that people love.

It's the same insane thing like buying a DAC - that only does 16 bit and max 48 khz - as I needed to teach someone that had a 3000 dollar DAC running on android and everything was downsampled to audiotrack's system samplerate.