MXR reboots its 1970's Rack Unit Flanger/Doubler, now in reissued mid-size pedal enclosure format

I believe the original MXR Rack Unit Flanger/Doubler was first manufactured in 1976, and lasted most of that early period of MXR before its bankruptcy in 1984. Flanging and Doubling Effects occur at different Delay Times (Manual) - with Flanging normally around 1 to 20 milliseconds, and Doubling around 15 to 35 milliseconds. Thereafter you’re in Slapback territory! So the Doubler button switches…