1) The Echo - Learning about reverb and using this beast to get a good grasp on it.
2) Subtractor - As I usually remove chorus and reverb from patches for mixing purposes, it's nice to go through Subtractor's patches and know they don't have this.
3) Gtune by GVST - this is a free VST tuner, I don't have a trained ear and when a synth patch is getting really funky I just pop this on the end of it to make sure it is outputting a musical note and not indecipherable noise.
4) Europa - Great synth, love the spectral filter at the moment.
5) - Selig Gain - top device, very handy in the master section.
