The buffer, phase shifter, and mixer parts of the MXR Phase 90. The MOSFETs in the simulation are in reality supposed to be 2N5952 JFETs, so expect the bias to be very different if you try this in real life (it should be less than 5.1V). The Op-Amps are TL061 (but the quad version TL064 might be more practical) and the transistor for the mixer is 2N4125. The LFO is in a separate project: http://everycircuit.com/circuit/5232250556514304