Musical Fidelity X-Can v8 for AKG K701 (currently own Heed Canamp)?

I've never heard the Canamp, but I can describe my X-CANV8P's sound sig for you.

For one this amp is a hybrid design. The tubes buffer the sound and it's passed to the solid state output jacks. This way you get the tube warmth and solid state power.

- The V8P is a warm, musical, and detailed sounding amp. It has a weight to the sound that can make music sound more enjoyable and full. 

- I found the bass on it to be excellent with it's punch and extension, but lacking with the stock power plug. I recommend the Pinkie PSU here.

- Dynamics also lack when using the stock plug. With the Pinkie PSU the dynamics are pretty good and make the music more engaging.

- The soundstage is pretty big and the presentation is airy without being overly spacious.

- I found the treble to be well extended and somewhat sweet/soft, but this is not a bad thing. Having the treble like that makes this amp less tiresome on your ears.

- The midrange is fleshed out with good transparency and detail. Vocals really seem to come to life on this amp. 

What do you mean by the "pinkie PSU"? I would love to upgrade from the wall-wart that my X-CAN V8 came with, but I don't want to spend $500 for the one Music Fidelity was offering. Know any cheaper alternatives?

Thanks.

P.S. How is the "P" version different, if you know? 

You might have enough hours on your AKG 701s now, but mine needed a full 400 hrs to sound sweet.