Dr. Octo Rex

Sampler
Reason Studios

Dr. Octo Rex is a REX loop sampler and successor to Dr. Rex that can hold and manipulate up to eight different REX loops simultaneously across eight pattern memory slots. It enables tempo-independent playback and editing of ReCycled drum loops and audio samples by working with individual slices, allowing creative rearrangement and processing without pitch degradation.

Available for:VSTVST3AUAAXSTANDALONE

Key Features

  • Hold up to 8 REX loops in 8 pattern memory slots
  • 5 multimode filter types (Notch, High-Pass, Bandpass, 12dB Lowpass, 24dB Lowpass)
  • Slice-level editing with parameters: Pitch, Pan, Level, Decay, Reverse, Filter Frequency, Alt groups, Output routing
  • Slice Edit Mode for batch editing of all slices in one parameter sweep
  • Note-to-Slot automation for real-time loop slot switching
  • Alt parameter groups (1-4) for randomized slice playback within groups
  • Play individual slices as semitone steps from MIDI keyboard (C1 start)
  • Copy Loop To Track function to export slices as sequencer notes

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