Have you checked the behavior in
_buffered_ bypass mode ? (This is set by the 4th dip switch at the
back.)
I found a music store and bought a wall wart powerful enough to
fire up the mighty X4.
Unfortunately, it introduced a nasty hum into my
system that I can’t seem to eliminate.
Note, by the way, that the unit itself specifics 300
mA on the box where the DC power goes in. That’s weak.
And I just found out that the two channels are
discrete, which messes me up in a way that isn’t their fault but
still. The RC-30, which I have been using for several years, has
two inputs and two outputs, but if there is nothing plugged into
the second output, the two inputs are summed. That makes it
possible for me to use the GR-55 and control the mix right on
the guitar.
I’m crippled for the rest of this tour, and I expect
I’ll be sending the Ditto back after I get home. Kinda
disappointed here.