For the last 20 years or so I've played active basses. Not really because I need different EQ's on the fly, just always THOUGHT I preferred the sound. Recently bought an old Aria Integra bass from Alembic83. Bass came with no pickups, originally had Bart W4CBC pickups that are an odd shape so thats what I put back in. Was originally wired passive vol vol tone, that again is basically what I have done (with both the pickups wired series humbucking). Man what an incredible tone. My other 2 basses are an active Yamaha TRB5 and an active Aria Pro II Integra 5. Compared there is no real difference in signal level at the same volume but the passive set - all I can say is the tone sounds for more alive and harmonically rich. I run my sound through a Dunlop MXR M80 (which itself has seperate Active EQ and drive sections) and still the passive bass sounds way better. The active basses, whilst sounding cool sound a lot more compressed with less dynamics to the sound. It sounds so much better to me I am thinking about converting the other Aria Pro to passive with a set of standard size Bart humbuckers. I realise there must be 1000 threads on this - has anyone else done this? It just surprised me how good the passive sound is. Even with the drive circuit engaged in the MXR M80 the resulting sound is better to me!