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€99 / $99
DSP-Quattro DSP-Quattro DSP-Quattro
DSP-Quattro by Stefano Daino is an Audio Plugin Host for macOS. It can host VST Plugins and Audio Units Plugins.
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Sample Formats
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DSP-Quattro is an application to do Audio File Editing, Audio CD Mastering, plug-in hosting and BatchProcessing on MacOS.

DSP-Quattro v5 needs MacOS 10.11 El Capitain(*) to run, and it is fully compatibile with the latest versions of MacOS, including Big Sur on ARM-Based Macs.

(*) Previous versions of DSP-Quattro are available on request if you need to run it on a older MacOS version.

Main features:

Audio File Import/Export:

  • Import/export of most formats, as AIFF, WAVE, mp3, m4a, CAF, as well as raw binary files and dual L&R mono channels (and FLAC if running on MacOS HighSierra or newer).
  • CD-Texts, ID3 Tags and iTunes Plus AAC.
  • Long audio file support to do editing without any limitation on audio file size.
  • Markers, Loop, Regions fully supported.
  • DDP Import /Export.

Waveform Editor:

  • Unlimited Undo/Redo history on each audio file editor.
  • Up to 8:1 X-axis and unlimited Y-axis ZoomIn ratios.
  • Independent LR channel selection.
  • Drag&Drop support for fast import/export of audio file selections.
  • Cut editor.
  • X-Fade looping programmable editor with real time graphical and audio preview.
  • Fade In, Fade Out editors.

Audio File Player:

  • Real time audio scrubbing.
  • Play forward and backward, a jog shuttle controls the playback ratio.
  • Audio Editor Channel strip with multiple Fx on insert.
  • Phase inverter option for each LR audio channels and Mono button for testing mono compatibility.


  • Immediate Cut, Copy, Paste.
  • Linear Phase Sample Rate Converter.
  • Phase locked Time Stretching and Frequency Shifter algorithms.
  • Analizer/Declicking algorithm by sample prediction.
  • Internal effects: Parametric and Graphical EQs, Resonant analog modelled Low Pass, High Pass, Band Pass, Notch 12/24 dB filters, Reverb 1&2, Single, Dual and MultiTap Digital Delays, Chorus, Stereoizer.
  • Audio Unit 64 plug-in hosting: any 64-bits AU plug-in installed on your MacOS can be used as edit function with the sample accuracy, latency compensation, even only on a waveform selection.
  • It is possible to render to audio file a serial chain of Fx, to choose among Internal Effects or AudioUnit plug-ins.
  • Dozens of other editing functions, including Normalize, NormalizeTo, ChangeGain, FadeIn/Out, Phase Invert, Reverse...


  • Internal Audio CD-ROM burning engine, fully rebook compliant.
  • Import/Export Audio CD-ROM images as DDP standard, including md5 checksum.
  • CD-Tracks Sheet print-out as PDF and TAB-Limited Text files.
  • Easy and Advanced edit modes to better meet your needs.
  • Non-destructive real time editing with immediate visual feedback.
  • Shifting an AudioRegion in time, next AudioRegions and CD-Tracks will follow. This is not possible using a multitrack sequencer.
  • Shifter, scissor, add CDTrack mouse pointer modes.
  • Fx chain on AudioCDLayout output to apply your effect to choose among internal effects or your favourite Audio Unit plug-ins.
  • Each Audio Region can have its own Fx chain on insert as well.
  • It is possible to set an automatic 1:1 fixed correspondence between Audio Regions and CD-Track. It means that when you add an Audio File to the AudioCDLayout, DSP-Quattro will add and connect a CD-Track, too.
  • It is also possible to set a free complex configurations between AudioRegions and CD-Tracks are possible. As an example, you may need to add several CD-Tracks on only one long live recording: using DSP-Quattro this is possible.

Plug-in Hosting:

  • DSP-Quattro v5 hosts 64-bits AudioUnit Effects and Instruments plug-ins.
  • AU Effect plug-ins can loaded as real time effect (Fx) on insert on any DSP-Quattro internal audio source, as the Audio File Editor, AudioCD Layout, Input, Input Recorder, Virtual Instrument modules.
  • A serial chain of Fx, without any limitation on the number of Fx, can be used on whichever available insertion point.
  • Each AudioCD Layout Audio Region can have its own Fx chain on insert.
  • There is also a common AudioCD Layout Fx chain to apply the same effects on all the Audio Regions.
  • AudioCD Layout Fx are rendered to file when burning o exporting the AudioCD as audio file(s) and/or DDP image.
  • DSP-Quattro takes care of AU latency compensation to guarantee the perfect sample accuracy.
  • Instruments AU plug-ins can be used as real time Virtual Instruments controlled by MIDI for playing live.
  • DSP-Quattro Input module(s) allows to use the Mac as a real time Fx unit, which routes input signal to AU plug-ins and then to the audio outputs, in real time.
  • Using the Output Recorder, it is possible to make a recording of what one or more Virtual Instruments are playing live by MIDI. It is even possible to add Fx on insert.

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