[wijnands]

I'm considering a bluetooth receiver for my DT770 250 ohm as a solution for occasional usage with my phone as a source. However browsing around it seems that most lack the power to drive something with this impedance. Has anyone any experience with things like a Fiio BTR3 or 5 or a Hiby W3 with high impedance headphones?

 

[RH64]

I would suggest the qudelix. I have tried the Fiio and bluetooth connectivity was just very poor.

I have driven 300 ohm headphones and planars with this and it sounds crazy good. You may find you don't need desktop equipment.