some people complain about the slight volume drop when using just the -1oct without dry/-2oct on the mighty oc-2.
If you never need the dry signal or -2oct, you can simply take these pots out of the signal chain and get more output on the -1oct pot. You just have to desolder one resistor for each pot you don't need.
If you sometimes need the dry signal it's still possible to just take away the -2oct and leave the dry in. But the increase of volume won't be as much as when taking out both.
Here is what i did in particular:
I opened up my oc-2 an took out the mainboard (it's linked to the box with some cables, so you can't take it out completely).
Under the mainbord there is a smaller board attached to the casing right under the pots for dry and -2oct.
In front of each pot (the green cubes, see the pix) you'll find one resistor for each pot. They're labeled "r60" and "r59" on my unit.
By disconnecting one side of the resistor i made the corresponding pot useless, but the overall output is now slightly higher. I desoldered only one side of the resistor and left the other side in. so it's easy to connect it again, just in case i will need it again.
With the mod (i just left the -1oct and took the others out) i have unity gain at about 1 or 2 'o clock now. I didn't notice any difference in tone at normal levels. When i turn up -1oct completely, it breaks up/distorts slightly, but it's way over unity gain then. When i set it at 12 'o clock it's about the same output like without the mod and just -1oct soloed.
Here are some pix from the guts: