From 2010 pedal case type out of production all Usa handmade
The Vintage Solution... with a True Bypass Twist: One of the cool
things about a Vintage Univibe was that you turned it on simply by
pushing forward on the treadle, which activated a momentary switch
located in the heel of the foot controller... pretty nice because we
usually use the slower speeds so there were no odd transition noises
like you would get if you switched it on like a wah wah. Wah wah's (as
you know) turn on with a toe-activated switch, which would sound odd on
a Univibe clone because that position is the fastest speed. The problem
was (on an old Univibe) all it did was turn on or off the light bulb on
the PCB... it wasn't true Bypass and did not have a very transparent
sound.
Our Proprietary Heel-Activated system works perfectly, sounds
fabulous, operates smoothly, and "defaults" to bypassed should your
power supply fail or be disconnected... all ground covered ;)
Lastly, some have expressed concern about not having super-slow
speeds being that "true bypass" is activated when the treadle is in full
heel position. NOT TO WORRY, I found a way around the problem by
increasing the "value" of the dual speed pot from 100K to 150K and now
there are slower speeds available than any other Univibe clone as well
as the super fast speeds!