Now you guys have inspired me to trade in my P-51 Mustang for the best possible little portable amp. The ALO continental caught my eye with its tubes, but reports say it isn't so good with low impedance stuff. And the FAD is the epitome of that.
Earmax Pro / TU-05b probably not as portable as I'd like. Any other suggestions? I know my P-51 is supposed to be pretty great with low impedance stuff as it is. I know Ian, you liked your SR-71, but I am looking for the portable equivalent of yours and Pauls revelations - if possible.
Leckerton UHA-6S (mk1 or mk2) is my first choice. Honestly, you'd be hard pressed to do better. The ALO Rx MK3 is also purportedly very good.
Tubes in portable amps are very hit or miss. In my experience, mostly miss. The Analog P^2 stuff seems neat however.