electro harmonix frequency multiplexer Blue BoX?>

[BonoVox9 at aol.com]

In a message dated 8/30/00 8:10:34 AM Central Daylight Time, 
goddard.duncan at mtvne.com writes:

<< I came across a device a couple of years ago that was supposed to shift the
 input signal *up* an octave; it was part of a fuzzbox called a "foxtone". my
 task was to copy the interesting bit of this thing and squish it into a big
 muff (oo-er!). it turned out to be a phase-splitter, with one output being
 inverted and added then the new funny shaped waveform (all even harmonics, I
 expect someone will point out) being waveshaped into something resembling a
 sawtooth prior to further distortion. I was astonished to actually hear this
 thing on a guitar instead of just looking at it on a 'scope. it worked very
 well for lead parts but again, not for chords. >>

what about the MXR Blue Box?