The TubeOhm Pure-D16/24Rack (often abbreviated as Pure-D16/24R) is a sample-based virtual instrument synthesizer plugin developed by TubeOhm. It was released as an enhanced version of the original Pure-D16/24B synthesizer, specifically adding a robust step-sequencer and gater function. Primarily built for Windows systems as a VST instrument, it is a 32-bit legacy plugin tailored for creating rich ambient pads, strings, organs, complex soundscapes, and special effects. Core Architecture & Sound Generation
The sound design workflow relies on a hybrid sample-playback and subtractive engine:
Three Sample Oscillators: The basis of the sound starts with three individual sampler units capable of loading 16-bit or 24-bit mono or stereo .wav files. It features three separate loop modes (including loop on/off, in, and reverse).
6-Channel Mixer: Feeds the internal sound sources together before processing. Polyphony: Supports up to 10-voice polyphony. Synthesis & Modulation Tools
Behind the sample playback engine lies a comprehensive synthesizer structure:
Multi-mode Filter: A flexible digital filter switchable between 12dB and 24dB curves, featuring Low-pass (TP), High-pass (HP), and Band-pass (BP) modes.
Modulation Envelopes: Equipped with a standalone Filter-ADSR (featuring time-stretch functions at T*1, T*5, and T*10) and a VCA-ADSR with linear or logarithmic response curves. It also features a multi-stage envelope specifically for looping, custom curves, and complex modulation routing.
LFOs & Matrix Routing: Two Low-Frequency Oscillators (LFO 1 supports phase-sync to host). These route through 2 modulation buses containing 6 sources, 9 destinations, and 5 controllers. Performance & Effects
Step Sequencer & Gater: Features a 32-step sequencer supporting up to 64 custom patterns alongside an integrated Gater function to instantly inject rhythmic movement into static chords.
Arpeggiator: A dedicated arpeggiator tool with adjustable gate time and a live play function.
Onboard Effects: A multi-FX rack containing independent Delay, Leslie speaker simulation, Phaser, Chorus, and Reverb units.
Signal Shaping: Includes a single Distortion unit, a Ring Modulator for metallic tones, and a Soft Tube Limiter on the master output to achieve a warm, saturated analog style. System Compatibility Note
As a legacy instrument from the developer’s extensive catalog, the plugin natively runs as a 32-bit VST software architecture. If you are running a modern 64-bit Digital Audio Workstation (DAW) on modern Windows operating systems, you will need to utilize a third-party bridging tool like jBridge to load it properly. The developer offers their older 32-bit software catalog on an unsupported, “as-is” basis.
Are you looking to download or purchase this specific synthesizer plugin, or do you need help setting up a 32-bit bridge inside your current DAW? TubeOhm Pure-D16/24B
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