They were stock on this weird little amp/"stack" I've had for ages that I'm sure I've posted pix of many times in the past. Built in trem, 'verb and sounds kinda cool.
Not mine, but the same as this, only bout 2 foot tall. Cab is totalled and long gone.
Just fired it up now through the Marshall 2x12- it's clear the oldskool preamp is not made for anything other than cheap 60s guitars. Weird thing is, it actually sounds pretty damn warm and tubey with the guitar volume all the way up, very nice. Back it off a bit, and cleans up normally.