I just got home with this, a vintage valve amplifier for 55 eurobucks. It's worth much more than that, and it sounds so awesome, and it has knobs, and it's shiny. Fucking yes!
Ooh! Ive got one of them in my loft! It looks exactly the same as yours, except it has an analogue (needle) power/sound output meter in watts and decibels - retro styling! I always thought it would be cack, but since youve mentioned it I might crack it out for a shot with my hi-fi. Ill try and get a photo when I get home!