World's smallest tube amp in action
Here is a nice video from Z.VEX EFFECTS showing the world's smallest tube amp in action. (I did not see it in action before.) This handmade amp (about €499) is voiced to deliver classic rock tone, with a very high level of crunch available if it's wanted. Just crank the volume knob around to the level of distortion you desire, from a very quiet (one tenth watt) clean mode to a micro-Marshall blast when cranked up. It does a great job of emulating big amps at very reasonable volumes, which makes it exceptionally nice for recording.