XAOC’s 1975 Variable Spectrum Harmonic Cluster Oscillator is their highly anticipated Odessa additive synthesis module as well as being quite a mouthful. It’s just popped up as pre-orderable on many modular websites and should be available in the next week or two.
We first saw this back at Superbooth 2018 and so it’s been a long road to get to the point of pending release. Odessa is an FPGA based additive synthesis engine capable of generating 2500 harmonic partials with through-zero linear FM and detunable clusters of up to 5 voices. It keeps it all under control by utilising a number of macro parameters that do the hard work while you focus on crafting and modulating.
There are 9 parameters to play with starting with the whacking great big partial knob in the middle that dials in the harmonics while displaying a bit of spectral analysis on the Power Density Spectrum meter. You can push and pull the harmonics with the Tension knob, boost or attenuate about an axis with the Spectral Tilt, modulate the length of the Bank and Harmonic Factor, and then push it all through a warping comb filter.
You can build rich and full and complex timbres that can be either harmonic or inharmonic. All partials are frequency related to the common fundamental controlled by a V/oct input. Then dial up the unison detune for up to 5 copies that can be spread about to for fabulous fatness and density.
As with all XAOC modules the Odessa looks amazing. It has a huge depth of sonic possibility without overwhelming you with difficult concepts or too many controls. Check out the video below for a good casual demonstration of what it can offer. The Odessa will set you back £439.