Pono and Oppo Pm3's =
amps need not apply...
Audeze El-8 may sound a bit better for $300 more but a much bulkier headphone.
I will return from The Show Newport most likely with many combinations to suggest
looking into.
jhv
You must really bump the volume to fully enjoy the PM-3 SE through Pono....I am on my second tour with the PM-3 because I thought I must have been wrong the first time around and they still are just kinda boring...blah. I am trying, I really want to like them.