For those of you using a Nokia N8 > Leckerton UHA6S via USB on the Go w/ pretty capable IEMs.  Next time you start an extended listening session, get it fully charged, activate power saving and turn off all mobile data.  Then have a listen.

I should have some opamp updates within the week.  We can now move beyond the performance envelope of the 209, 8610 and 627.

Any thoughts out there on the newfangled M8?

Yes.  I got my deposit back.

I still love the HP-P1...Sometimes a manufacturer gets it right....

Put it this way, the thing is balanced so the idea of properly driving the HD800 seemed logical to me.  Like the DACPort and most of the CENtrance stuff w/ amps, it's really lean and bright.  Michale thinks his stuff is transparent and the HD800 is the problem.  His critieria for the quality of the hifiM8 was that it gets really loud driving two headphones at once.  I like the DACPort LX as a DAC, but IMHO CENtrance is really a bit clueless about amping apart with the usual rudimentary measures for power, noise and distortion. 

Amps that can drive the HD800 better than anything from CENtrance: Beta22, GS-1, GS-X, Dynahi, BHA-1, O2, WA6, WA5, Luxman P1u, CA EHHA/LF/LG/LAu, all Eddie Current gear, all Schiit gear, Bottlehead Crack, Decware. Malvalve, Bakoon, Lynx, ALO RX3b, Leckerton, others.  That's a very large list of better sounding amps to choose from.  I didn't need a portable balanced headphone amp that sucked at driving my balanced headphones.

Listening to a HD800 from a CENtrance product is like a slightly more refined Fiio.  I wish Michael would stop believing his sound is 'transparent' so he could work on improving it.  Do you really want to pay that much for just meh or bad sound?  I have tone controls on my Arrow 4G already.  I will say I thought the treble tone shaping was well done last I heard it.  DAC doesn't work w/ USB on the Go anyway.