These were very special sounding machines and not comparable to tape echo/delay.
Anyway,- I´m not interested to get a 1:1 mechanical replica of that machine. Modern technology is o.k. for me when reliable built,- and it seems Strymon did everything I want and combine w/ 2 different tape echo modes, spring reverb and looper. For me, that´s 5 machines in one box I can use w/ any mono- or stereo- output single instrument, in any FX loop or as an Aux-FX device.