Sound: Oh, the sound! This thing sounds great with just about any guitar, but IMO, it really shines with a Les Paul with PAF-type humbuckers. That's no surprise, seeing how Zach voiced the Nano Head with his 1968 Les Paul Custom with early 60's PAF's. 1/2 watt distorted might not sound very loud to you, but it's loud enough (remember: this is still a tube amp, not solid state. The rules governing volume are different in this case). Its definetly over conversation volume. As I said before, the Nano is voiced like an old, non-master volume Marshall Plexi. Everybody that I've seen, even people who don't play guitar, have been taken aback when they hear this little beast. It sounds best with a good set of Greenbacks or Blue Alnicos (its a tigher sound with the Blue Alnicos, but I prefer the Greenbacks in a 4x12 myself), but it will work with any speaker.
You might notice a little funkiness in the highs, however, if you don't use a set of Greenbacks or Alnicos (like if you use Vintage 30's). G12H30's sounded pretty good to me with this amp, too. The clean tones are a little quiet, but setting the switch to the Thin Man, putting the volume at 12:00 o'clock and switching to the white cloud can yield a very nice, old Marshall-esque clean that's very pleasing. That being said, this amp was made to rock.
Crank up the gain and it starts getting into Zeppelin territory, all the way to Randy Rhoads-era Ozzy. And that's about as heavy as it gets remember, it's supposed to sound like an old Marshall, not a Dual Rectifier. The amp was really designed for recording purposes, overall. I swear, this thing to tape sounds amazing. When I had my Marshall 1960TV 4x12 with Greenbacks I got really, really, really close to that Van Halen Mean Street tone with my 1969 Les Paul Custom. That's what makes this amp so great: you have a raging power-tube esque overdrive that you can just stick a mic in front of pretty much right away. Recording a monstrously loud, 100-watt beast takes a LOT of time and effort, whereas the Nano Head does the job extremely well with a complete tube audio path at a great volume for recording. // 10
Reliability & Durability: Zachary Vex has some of the best customer service out there right now. If something goes wrong, he's there to fix it and have it back to you ASAP. He has great customer support and really will go the extra mile for you. // 10
Overall Impression: The Nano Head is one of the most impressive amplifiers that I've ever come across. It makes it so easy to record a great, older Marshall tone and still get a great sound. If it were stolen I'd have to get another, I love the sound too much. They're pricey, but well worth it. // 10