When I'm not complaining about people asking stupidly high prices for used guitars (see other thread), I quite enjoy adding to my Boss pedal collection from ebay. I've been thinking of setting up a small bass board, and here's the first one, which was mint, boxed, and even contained the original battery (which was sadly a little too flat to work) for 55% of the brand new price (that's more like it, eh?):http://i.imgur.com/JTNrpom.jpg
The low filter knob is very useful for preventing the low E becoming too wobbly, and for the first time I've been convinced that level and depth controls are useful. An interesting trick is to plug a dummy jack into the B output, which tricks the A output into only supplying the vibrato signal.