Diva's oscillators, filters and envelopes (which can be mixed and matched) closely model components also found in some of the great monophonic and polyphonic synthesizers of yesteryear. "But, " says Urs, "what truly sets DIVA apart is the sheer authenticity of the circuit emulations – at the cost of a relatively high CPU-hit, DIVA is the first native software synth that applies methods from industrial circuit emulators (search for "PSpice") in realtime. Especially the authentic behaviour of DIVA's zero-delay-feedback filters, when pushed to the limits, demonstrates the advantages of this groundbreaking approach."
u-he describes the available filters as "famous transistor ladder", "screaming Sallen-Key", "classic OTA ladder" and "OTA state-variable" (and similar for the oscillators), and owners of classic analogue synths will already know how best to apply these models – they are easily differentiated in the gorgeous user interface.
Since Version 1.3 Diva also features a Digital Oscillator, an "Uhbie" filter and a vintage-style Arpeggiator.