Is this the secret of the Fulltone OCD ?

[zbt]

if VB 1/3 or 2/3 VC it would be distort
if using 1M it might suffer so it distort, it effect the current for (+) input of opamp,
when testing MXR D+, I tried use 470uF, the sound become cleaner, lowering R value also make noticeable different.

so I'm thinking the capacacitor make a solid ground for VB.
in case of OCD maybe the output signal make a "ground quake", it affect R input

MXR D+    1M  1uF -- may be this would affect a lot
RAT     100K  1uF
DS1      10K 47uF
OCD      10K 10uF -- 2.5 Magnitude usually not felt
DOD 250  22K 10uF


not yet have time for testing.