Best headphone amp under $400


Hi all, what's the best headphone amp under $400 for B&W PX7? source is tidal (uncompressed) audio streaming. would like something portable. Audioquest cobalt/dragon seem to have good reviews but I am not familiar (had some cables made by them, they were good)

thanks 
speedmaster20d

Showing 2 responses by speedmaster20d

I am looking for AMP + DAC in one package. I have read very good reviews of the AQ dragonfly. was looking at cobalt. DO you mean barely enough for high impedance headphones or just any headphone ?
thanks  
thanks all ended up with dragon fly cobalt, sounds really good. had seen mojo pretty nice too but a bit too large (want to fit in a pocket without feeling it!)