Oberheim OB-X voice boards compared to OP-X PRO-II

video upload by SonicProjects

"Oberheim OB-X voice boards tuning trimpots and the autotune function compared to the tuning features of the SonicProjects OP-X PRO-II software VST AU synthesizer.

This is an addition to the 'Voice management and detuning' chapter in the official Tutorial: [posted here]

For this comparison we are having a look at the electronics under the belt of an Oberheim OB-X Rev. 2 with 6 voice cards installed.

OP-X PRO-II internally works exactly the same as a real voltage controlled polyphonic analog synth including separate independent voices, voice-based tuning trimpots, slightly deviating voices caused by device tolerances and temperature drift, and autotune.

The autotune options in OP-X PRO-II however not only cover pitch (as in OB-X) but also filter cutoff (as in Matrix-12), filter envelopes and portamento, and autotune also can be applied seamlessly on demand, so achieving any state between tuned and detuned.

Other than in real voltage controlled polyphonic analog synths OP-X PRO-II can save the state of detunings with the patch and so allows a different sate of detuning for every patch, which was impossible to do in the originals.

SonicProjects invited this engine already back in 2006 with the first version of OP-X PRO (in fact already its precedessor OP-X had it, but not yet offerig user-accessible trimports - only autotune) and was the first plugin manufaturer in the world offering this feature.

In OP-X PRO-II this detuning engine has was extended and refined with a seamless autotune option and quick calibration features."