Here's my initial review of the ZVex Nano Head:

t's great. I really love it.

Through my Little Lanilei Rotary Wave Speaker: eerie overdriven warbles beautiful 'old' quality.

Through my Bogner 2x12: OH MY GOD! What amazing amp distortion! No (lack of) volume issues, to be sure. The various switches are really useful, they're not 'corrective'; they really let you shape the sound. I guess Marshall overdrive is the closest touch point, but it's a much more classic sound than most Marshalls you find out there. It's a very rich and textured distortion. Beautiful low volume feedback, which is lovely, and something I'll use a lot.

Internal Speaker: It's plastic. It's tiny. And that's how it sounds. But useful nonetheless. One cool thing that I used to do with my little Marshall (you know the little plastic pieces of poop) is crank it and hold the speaker right up to the guitar around the pickups and get a nice little feedback thing, thin and reedy... Anyway, the Nano does this beautifully and sounds a far sight better. A little discovery was that touching the fan yields wicked dive bomb, racecar doppler kind of sounds that will get some mic time.

Mullet Saison ,how loud does it get using your 2 12 cabint?

I have the little Nano head also, it's plenty loud through a 4x12 and I hvea little box with two 8's in it that sounds remarkably good too.

But the tone ohh I love it, one little thing I will probably never sell. It screams, REAL tube amp distortion at low ( relatively ) volume.

Here is a good demo of it:
http://www.prosoundcommunications.com/mov/MT/nano.mov

I do believe those pickups he is using are Kinman AvN blues. Sweet sounding demo.

"Where are we going? And why am I in this handbasket?"

This amp ROCKS!!!
I've had it for over a year now, and this this ia a killer recording amp. Not loud enough to gig with though.
If your looking for one of the best recording amps ever, this is it.