I was playing a Modulus Quantum 4 Sweet Spot in the local axetorium the other day and it had a great preamp. It appeared to be bass and treble boost/cut BUT they were sweepable (ie: semi-parametric). The net effect is a very versatile circuit IMHO. Does anyone know who makes this and whether or not it's a Modulus exclusive. I would like to drop this circuit into my current project bass (fretless '89 Jazz).