Why is there no simple filter box around, that could do a simple Moog shape switchable low/high pass filter, with just a knob for cutoff and resonance and a switch for LPF/HPF? Is there not enough demand for one so the big companies like Boss or EHX would do one? I know about the Moogerfooger and the Iron Ether thing, but they're both pretty pricey and are only LPF but cannot be switched to HPF. But then again all the Moog stuff is really overpriced, and Iron Ether is a small company, and obviously can't do the same prices as bigger ones. I could see a million applications for a box like this, specially nowadays that guitar music gets more and more influence from electronica. I mean it's one of the most basic effects on synths, why shouldn't it be widely available for other instruments?