Yes, absolutely.

Very interesting... and perhaps not that surprising. I'm also curious how much of a difference you perceive when adding the iFi unit to the otherwise "stock" Prime. Thanks again!

  Having had both myself, I think I can attest to that although I suspect there are a few on this forum who might disagree.    Get well soon!

Thanks... I guess Dusty's guess regarding the size of the center pin was accurate.

Very good.  Did you end up using the supplied 2.5mm power cord for the Prime or did it require the 2.1mm adapter?   Looking forward to your impressions.  

  ticos442, have you received the Channel Islands power supply yet?  Any initial impressions?

I'm surprised it took you so long.    Seriously, your expectations regarding your upgrades match mine and I'm very interested to know your findings.  You're most welcome for the referral.   BTW, is Dusty sending you a DC power cord for a 2.1mm center pin, 2.5mm, or both?

OK... now I believe you:   http://www.adaptertech.com.tw/08_ac_dc_switching_adapter.html  

No surprise.    Edit: maybe I'm too trusting... where is the designation?

  Not sure... maybe ticos can confirm one way or the other, although it's often not explicitly stated on the power supply.

The unit is available now... just contact them and they'll build it for you.  It will look exactly like their current 5V and 9V units except that it will have the correct designation (VDC-12 MKII) silk-screened on the front panel.  They just need to know the diameter of the plug at the end of...

  In case you or others might be interested, I have just confirmed that Channel Islands Audio will build a custom 12V version of their VDC power supply which could be used to replace the Prime's wall wart.  I suspect that you are already getting most of the benefits of the $1250 optional...

  Droves?  Hardly.   I can afford it and still think the price is outrageous.  At half its listed price, it would still be expensive but the price could to some extent be justified by its pedigree and capabilities.  Still, I know of no other single component - which is what I want for my...

Excellent, ticos... your informal tests suggest that there is a little less gain at the 1/8" jacks than at the 1/4" jacks, requiring a slightly higher position of the volume knob to reach the equivalent level. This makes sense, since the 1/8" jacks will typically be used with more sensitive...

ticos442, I'm aware that the 1/8" and 1/4" headphone jacks on the Prime have different output impedances.  Are you able to ascertain whether they have subjectively different gains by testing the same headphone in both jacks (one will require an adapter, of course).  The testing headphone should...