custom made buds are worst for lying. Your ear canal would deform when lying, which your earmod was not made when lying.

Oriolus 1795D bluetooth reciever would have SPDIF output into LP6. I am going to try this unique setup with traillii, that i may guess it would be one of the best bluetooth setup, by taking digital bluetooth signal, and probably the best portable amp and DAC from LP6

yes, iphone got more constraints on digital output.

I think any smartphone could do a good job by making LP6 into a USB DAC. Am I right?

Odin is kind of honest and reference type sound, but Traillii is another level in terms of transparency, speed and layering, esoecially in vocal and trebles.