Weve had a few of these in the past but people change their minds allot and we have a few new members, besides I like talking about tone I set my basses preamps flat using the balance knob to taste and use my heads for tone shaping to keep things consistent and use a Voodoo Labs amp switcher to switch between my two preamps On my Ampeg SVT-3 Pro: - Set my gain to 3:30 and tube gain to 11:00; keep bass and treble flat, set mid frequency to #1 (220Hz) and set it at 3:30. - I assign my graphic eq to boost 80Hz +4dB, 150Hz +5dB and 8kHz +5dB. And cut 900Hz 3dB and 2kHz -1dB. Using a graphic eq took a little getting used to; I still prefer parametric eqs though. I use to use a smiley face EQ before I discovered I prefer using the low-mid and bass frequencies when just messing around on the bass by myself. On my Ampeg SVP-BSP: - On the clean channel I set gain to 3:30, bass to 3:00, treble to 2:30, keep mid flat and use the pull out the compressor (on). - On the Overdrive channel I set gain to hard drive 3:45, bass to 3:45, mid frequency to 12:30 (about 550Hz) and level to 8:00, treble to 3:30 and keep the tweeter level on my cab pretty low to avoid harsh noises.