Despite the obvious use - creating the impression of beating waveforms, supersaw-like phases cancellations whilst generating an oscillator signal of a single stable determined pitch - the a137-2 can be used for lots more. It has quite advanced waveshaping powers, the modulation cv inputs can take up to audio rate modulations and give crazy results. I've even managed to patch it up as a shuffling clock multiplier/trig delay for getting shuffly snare rhythms. All in, a far deeper module than the fake-supersaw reputation it has.