Tiny amp promises big sound

(Credit: ZVEX)

This little guy is worth keeping around the house as a conversation piece if nothing else: You can keep your friends guessing its use for hours until you turn it on.

It may look like a toy, but this "Nano Head" is actually a powerful amp, according to distributor Zachary Vex. And not just any amp, he says, but the "world's smallest production tube amp."

This could come in particularly handy if you're trying to get just the right tone for your riffs. Because, let's face it, you'll need all the help you can get.