Vintage Fender Bassman Mod. Fantastic!!!

[Knox in Box]

I wonder what that extra knob is also?

 

[Chad]

These days you could use that to charge your cell phone

 

[Bob411]

Great but it won't last long. Resin from the roaches clogs it up.

 

[Motorik]

@BlockInlay Throw it into the back seat while you're driving.