Hi all, I'm debating getting an audio crossover pedal that splits the low frequencies into one channel and the highs into another. I don't want the unit to have any built-in effects (EQ, distortion, compression, etc), I want to do that externally with my pedals of choice. I'd prefer one with a sweepable crossover frequency knob, and I'd prefer one that does not require a preamp in between the passive bass and the unit - if possible. I'm just looking for some recommendations for anyone that's done something like this. I did find this unit "SFX: X & M (Crossover and Mixer)" and it looks pretty good, but I don't know if there's something better... I do like that it has the mixer built-in to it. For anyone that's tried the SFX, did you need to put a preamp in front of it? Thanks!