A common complaint about the Darkside is that it is too bassy/dark sounding. Here are a few mods you can do to really open it up.
These changes will reduce the bass:
C1 - replace with 27n
C5 - replace with 47n
C18 - replace with 100n
These changes will retain more high end with the SUS control turned down:
SUS - replace with 500kC (or 500kB) and add a 470pF or 1n cap between lugs 3&2
Reducing C9, C12 and C14 to 470pF and/or C13 and C15 to 100n will also brighten things up if it is still too bassy for you.
Definitely going to give this a try. I find I have to have my Tone knob cranked.
I find this quite funny. Modding a Darkside to be brighter... It's like putting off road tyres on a Porsche 911. The Darkside is built to be a pedal.
Modding helps people finding their dream tone.
it's not putting odd tires on a deluxe car.
modding a mesa boogie dual rectifier would be strange, modding a cheap diy box is perfectionism