the case is an old mixer which contained the plates wich are filled with the pots faders and switches.
from another mixer (which was given up on) comes an power echo that is built in.
mostly the mods are from the wiki and site .
echo can be mixed with true sound or stand alone.(works nice with the insert modification)
mostly mods from the wiki and some addings to it
accentsweep speed settings on a guitarswitch 5 positions
accentsweep on/off with 2m2 pot to control the range between on and off (shortens d24)
rotery for different 'muffler'diode distortions with 50 k pot to control the range between full and off
insert mod is with pot also to control the level vco kill switch and vco to insertlevel controlpot switch (crossfades inserted sound with vco sound) it makes the sound 'come up' this is very usefull if an effect is inserted.
again thanks for all the information and enthusiasm here on the forum ,
without it would be much harder to work on such a project
keep it up!