modules with different tubes?

[Eric]

>One would think that the 6X8 might make a good octave divider for guitar.  Do 
>you know if anyone has tried it?

Nobody has ever thought to use a tube for an octave divider.
There are a lot of guitar-pedals that have never been tubed.

>  Is the output square-wavish?

Of course. A flip-flop is a flip-flop.
It just won't be a very good square wave....
also a bit high in amplitude (this can be
taken care of easily).

Eric Barbour
METASONIX