The OP-X PRO is based on the OP-X engine while offering a lot of new added features for even enhanced analog feel and a really tremendous sound potential.

Extended information

Multimode Filter - One of the main additions was to enhance the already great OP-X filter with multimode functionality. The root concept for it was derived from the old SEM multimode filter which allowed seamless blending from lowpass over notch to highpass with a fixed bandpass position. This basic concept was now even enhanced with a switchable 12/24dB lowpass position and a multimode pole (only high pass in SEM) with itself seamlessly (!) blendable modes from highpass over bandpass to notch. Not enough with this the lowpass-to-multimode mix can be automated by lfo and the filter envelope. So this mad filter is continuously controllable in every aspect and will simply knock you out of the socks!

The SEM based multimode filter offers two extreme positions: a 12/24dB switchable lowpass pole (12dB mode same as OP-X) and a seamlessly (!) switchable multimode position (highpass, bandpass, lowpass). A mix trimpot can blend from the lowpass pole to the multimode pole continuously. If the multimode pole is in highpass mode the 12 o'clock mix results in notch filtering like in the old SEM module. The lowpass-multimode mix can be automated by the main lfo and the filter envelope. This gives you tremendous control over tone to make fit a sound the mix without eqing at all. That's how it should be anyway.

Panning modulation - The already great individual voice pans can now be mudulated by the lfo for moving stereo effects.

Tuning trimpots - The tuning trimpots of the original's voice cards have returned in the virtual world. You can tune your OP-X PRO now like a service technician of the old days. This allows you to copy a hardware synth in every detail and gives you total control over the overall sound.

Amp modulation - Ocillators tune offset - In old voltage controlled analog synths a totally equal tuning between oscillator 1 and 2 was almoust impossible. There were always left slow beats. This trimpot lets you control this effect.

Oscillators fine tuning - Old monophonic synths like the ARP Odyssey offered continuous pitch control for fine fm adjustmrents. In the OP-X PRO you can switch from quantized (semi tones or octaves) to seamless pitch control.

Voice muting section - The voices can be muted individually for less fat unisono sounds, real mono mode and tuning purpose.

Technical specifications

- lots of virtual tuning trimpots for custom detunings (!) show
- switchable legato mode for unisono playing
- switchable lfo to amp modulation
- enhanced minimal envelope times
- voice-based lfo to pan modulation (!)
- seamlessly controllable vco frequencies show
- voices individually mutable for variable mono mode