Phew...so glad to finally be able to talk about this!!!
I'm the guy who got to take the photos of the Magni and got to spend some extended listening time with serial#0001. I can tell you that the Magni is an impressive sounding amp for $399...except that its only $99! It was a crazy good match for my Grados, sounded fantastic with my LCD2's and even drove incredibly inefficient HE-4's to credible levels, tho that last pairing wasn't one I'd say was the best. The size is fantastic as is the build quality...no surprise there.
I would describe the sound as fast, clean and very dynamic. Bass is tight rather than bloated. You won't mistake it for a SE tube amp...it's Solid State is all its glory. I was shocked at how impact full the snare drums sounded. I'm not used to that nice sharp crack coming from amps at this price point.
Needless to say, a Modi/Magni stack will grace the desk in my studio for some time to come.
Highly recommended!