The Ultra Analog Virtual Analog Synth offers 32 physically modeled voices and two super-rich, alias-free oscillators featuring standard waveforms, sub oscillators, hard sync, and integrated pitch envelopes. There are two multimode filters with distortion onboard, plus plenty of modulation options via two syncable LFOs, four loopable velocity-sensitive ADSR envelope generators, and vibrato. The latest Mac OS X version, v1.0.2, is a free maintenance update with some significant bug fixes for registered users that improves stability in host sequencers like Pro Tools, Logic, and Digital Performer, improves the response of the filters, and adds a 15-day grace period to the authorization system.