Before I bother David at Audere..yet again..I wanted to ask here, hopefully someone is familiar with how the passive tone control works on Audere preamps. My basic question is...does the passive tone control, when turned fully up, add brightness to the tone? I know that sounds kinda like a stupid question...but what I'm getting at is, if the tone control were removed completely from the circuit, would that sound the same as the control turned fully up? I just need a better understanding of how it works. The point behind this: I have two Laklands, a 5501 and a 4401. My 5501 has an Audere with the passive tone control. My 4401 has the same preamp but without the passive tone control. Both have the same pickups. I'm trying to get them both to sound the same, but the 5501 is much brighter and punchier with more output. I'm trying to figure out if it's just a difference in the basses or if that passive tone control is what gives my 5501 that sparkle and punch. I run it all the way up and don't add any of the active EQ.