Ok, the envelopes are not that good but the sound itself is superb! It has something in it that reminds me of Dotcom synths. All 4 filter cards sound just perfect, especially the SEM type makes a beautiful sound. It delivers everything you need without clean precision (in terms of snappiness) but with brutal warmth and richness. Just sounds expensive! The first revision (the one I have) has CV/Gate in/out. The Gate in crashes the unit's software when it receives too fast triggers, so no audio rate gating possible.