OB-Xa V - General Questions

Questions about OB-Xa V?
Have a look at our FAQs below.


You might have noticed that on some of the presets, the CPU consumption is higher than on others.
Have a look at the following functions that usually increase the CPU consumption:

  • Unison: Depending on the number of unison voices defined in the bottom toolbar, playing one note will trigger multiple voices at the same time. For instance, with the unison set to 8, pressing one key will be equivalent as playing a 8-note chord.

  • Stereo Spread: This feature clones the audio path to make it stereo, which means it results in twice the number of active voices. For example, when playing 8 voices at the same time, you’ll actually have 16 voices playing simultaneously.

The Pan Spread function shifts the OB-Xa V voices across the stereo space based on the stereo positioning specified by the Voice Pan trimmers.
The Stereo Amount knob controls the amount of panning applied, which is multiplied by each of the trimmers.


The Stereo Spread function clones the voices into two parallel channels (left and right). Slight variations are then applied to the oscillators, filter, and LFO, resulting in a wide binaural / stereo feel.

  • The Stereo Spread knob is a global offset of the LFO, Oscillators, and Filter controls.

  • The Stereo/Movement controls located in the hatch underneath lets you adjust the dispersion of each parameter independently.
  • The movement controls serve to add further motion to the parameters dispersion of the two channels. This results in an organic and constantly evolving stereo spread.
Note: CPU consumption is doubled in Stereo Spread.
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In Chord Mode, pressing a single key triggers a chord instead of a single note. To define your chord, click the ‘Sel’ button to open the Chord selection panel. Then, click on the keys you want to enable in your chord.

Tip: When the Chord Mode and the arpeggiator are enabled at the same time, pressing a key will result in an arpeggiated chord.
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The X-MOD lets you modulate the OSC1 frequency with the OSC2.

Instead of replicating the On/Off switch present in the original OB-Xa, we decided to add a potentiometer feature, as in the OB-X.

This makes the usage of the FM more versatile.
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This is by design.

When no modulations are applied, the maximum cutoff frequency is 1373.8Hz.

However when applying modulations to the cutoff, it can open further than the maximum cutoff range.

This parameter lets you adjust the filter slope. The filter slope determines how much the Filter attenuates frequencies past its cutoff frequency in dB per octave.

  • In 4-pole mode, the filter slope is -24dB/Octave (Steep slope)

  • In 2-pole mode, the filter slope is -12dB/Octave (Smooth slope)

If you have any further questions, feel free to contact us.