Apologies if this post is in the wrong place as I'm new to the forums here...  I'm looking for feedback from some members who've listened to the ALO Pan Am w/ the following headphones I'm interested in:   1) HE-500  2) HD650 3) SRH1840 4) T90   I'm trying to determine which pairing...

Looking for some recommendations on the best AMP/DAC to use w/ a Sony Walkman-z (NWZ-Z1050B) and a set of Shure SE425s.   Please let me know what you think and thanks in advance!   Cheers, Ryan