Hawk HR-40 Stereo Spring Reverb Tremolo famously-used by the Beatles in

famously-used by the Beatles in their Hamburg days

This description is relevant to this machine only: T7E serial number 6920

some surface oxidation of the XLR sockets (does not affect use at all)

including the digital ones

they were (and still are) used by a whole slew of electronic music pioneers from rave purveyors 808 State and The Prodigy to industrial noise-mongers Nitzer Ebb and KMFDM to experimentalists Boards of Canada and Squarepusher

Hawk HR-40 Stereo Spring Reverb Tremolo famously-used by the Beatles inRare Japanese stereo spring reverb. There is magic in these boxes the circuit just eats up high signal and overloads so well