I hear you now and I've considered a ZenHead but have not said much about it. Not knowing what coming down the line with digital both at Decware and otherwise gets a little dicey. The output of the 30 Gb iPod (non-touch) that you've seen me with is thin and a little weak but has had a good result with the CSP2. The iPhone is more robust on its own than the 30 Gb iPod and has better tone and weight but still can be thin at times depending on material. ZenHead design notes claim to help iPod in this regard so I understand your "MOST don't hear me" comments. I just think many are looking for a small, convenient, and less expensive DOCK/DAC. Your full out DAC effort is another thing altogether. The new ZCD200i is pretty enticing, but so is the ZenHead as a tidy and useable solution for portable clean, strong iPod output/interface. I heard or read that the iPod touch and iPhone3G DAC's are better than the classic iPod and I can hear it at home so must be something to that. ZenHead/ZCD???
BTW you wouldn't believe the non-spec tubes I've been rolling in the center spot on the CSP2 and on the Integrated. 6CG7 and 6BS8 as well as 12AV7. The results have been eye opening and very good. Lower than spec heater voltages allow a lot of experimenting with twin triodes though it can get noisy with the wrong tube. Ever consider adjustable heater voltages and tube regulation for the input stage of the CSP2? Would give a lot of flexibility? Sorry OT

OH forgot to ask is there a lot of gain above the iPod max output with the ZenHead?
Nevermind answered my own question. Saw the gain switch on the board and the impedance adjust.