I have had a few days to really get to know the PanAm better, and I have to say it does not disappoint, I am only trying to get funds together to get some Mullard tubes for this DAC/Amp unit, and only thing I do not care for so far is not having a RCA out and or preamp option for when I would like to use a Solid state amp, for better pairing with certain headphones. I have been steadily using this unit along with the Gateway psu alongside the HD600's and the ER4PT( I have listened a bit with them being that I am newer to in ear monitors, but they actually pair really well) Both sound great with the amp which is a exceptionally good tube amp. Being that there is a warmth but not overly warm with the tubes so far, to where I am losing out in detail. I would say that the DAC is a fairly good one at that, on par with the ODAC as far as clarity and clean conversion of my flacs and other tracks. The fact that I can use low gain to drive both the HD600s and the Tenore zero IEMs and get no hiss or static that I can hear to my ears really impresses me. I actually find this amp and dac suited to being versatile with many phones and Iems alike. Granted this is subjective, but I think that I am overall happy with the single set up for my desk setup. I am selling the Fournier HTA-2 which in it's own right is fantastic, giving a realism and rare energy to music I have yet to hear done from even more expensive units. In that same thought though I am not upset that I am using the PanAm's amp because it is equally as fantastic, and sounds very accurate with still have some warmth and especially life and musicality.
EDIT: I have a pair of ZMF X Vibro's that I am going to try out on the way should be here by the weekend. And hopefully the T70's that were suppose to arrive but have not been(I swear I will lose it if USPS loses another package) And I will be trying out both of those with the PanAm and let you guys know how I feel about the sound. I am hoping the ZMF will sound good with this, and be able to be drive with authority, from what I have seen and read about phones that are good mates to the Panam give me hope