I have tried two mods to my SRMS805. The one above has dual-coil US Bartolini Classic Bass pickups wired in parallel, with two 3-band EMG EQ's (bass, treble, vari-mid) - one for each pickup, and a switch which allows me to change the pickup selector mode between two modes: bridge-both-neck and inner-both-outer coils.
This allowed me to have two pre-selected modes with individual eq settings and quickly flick between them. By the way inner coils sound very modern and nice, while the outer coils sound rather old-school like a Fender PJ.
The controls are:
Mode switch, Pickup selector, Volume
Bridge PU Vari-Mid, Bridge PU Bass/Tre, Neck PU Vari-Mid, Neck PU Bass/Tre.
Then I have realised that the dual EQ setup is not that flexible as it sounds, so I have went for a more traditional setup with a blend control, series/single coil switch and a 4-band EMG EQ:
The controls are:
Series/Inner coils switch, PU Balance, Volume
Bass, VariMid, VariMid, Treble.
I still don't know which treble setting should I select with the EMG preamp DIP-switches, 3.5kHz band or the 5kHz shelf. The 5kHz shelf really transfers the US Barts sizzle (similar to the MTD basses), but the 3.5kHz band accentuates the attack nicely.