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 Quad by Schaack Audio Technologies is an Audio Plugin Host. It can host VST Plugins and Audio Units Plugins.
Product Quad
Developer Schaack Audio Technologies
Price (MSRP)
Type / Tags DJ Tool
Plug-in, App & Soundware Format(s)
Can Host
Operating System Availability
Download Released
Downloads Released
Downloads Released
Supported Sample Formats (loads or saves) include
Miscellaneous Information
Copy ProtectionNone

Quad is an open-architecture DVS (Digital Vinyl System) that can be used to play & scratch up to 4 MP3s simultaneously, controlled by 1 to 4 turntables. The turntables can be connected to any soundcard (ASIO driver required on PC); thanks to Quad's internal software Phono preamps it is even possible to connect the turntables to Line Inputs on the soundcard.


Open architecture:

  • Compatible with any soundcard (Windows: ASIO driver required).
  • Software RIAA Phono pre-amplification allows connecting turntables directly to Line Inputs on the soundcard.
  • Nearly every parameter is MIDI controllable.
  • Totally configurable audio routing.
  • Easy MIDI Learn.
  • Compatible with nearly all MIDI Controllers on the market (accepts CC & Note On/Off MIDI messages).
  • MIDI feedback for endless rotary MIDI controllers or motorized fader MIDI controllers.
  • Resizable and completely user-configurable GUI: Channels may be shown/hidden, EQ/Filter/asf. may be shown/hidden.

Total control:

  • 1-4 decks may be used to control 1-4 tracks (MP3s/WAVs).
  • Custom Vinyl Tracking algorithm provides a near-analog scratch experience.
  • Perfect tempo-synchronization of up to 4 tracks using SYNC.
  • Powerful 1-deck support (one single turntable may be used to mix up to 4 tracks).
  • Virtual Zero Lock Range makes pitch 0 really 0 and virtually eliminates the "resting point" at pitch 0 on old turntables.
  • Recording the mix as .WAV during mixing is possible.
  • Keyboard shortcuts allow using Quad without touching the mouse.
  • Preview Player for fast pre-listening of tracks on Headphones.

Advanced sound processing:

  • Fresh sounding filters (X-Filter, SVF).
  • 3-band Equalizers with parametric mids from 100Hz to 10kHz.
  • Tempo-matched FX (Flanger, Phaser, Echo, Delay, LFO Filter, ...).
  • Tempo-matched Loop Samplers.
  • Any audio material (real Vinyl / CDs / Mic / ...) may be routed from the soundcard's inputs into Quad for mixing and FX-processing.
  • Crossfader with 3 curves.
  • Support for VST plugins (Windows only at the moment).
  • Look-ahead limiters on each ASIO output avoid audible audio distortions when signal becomes too hot.

Managing your tunes:

  • New, improved browser.
  • ID3 Tags are editable.
  • Create cases of your favourite tunes and music styles.
  • 4 assignable Cue Points per track.

Quad is delivered with 4 Timecode Vinyls for €89 + VAT + €10 shipping. Further Vinyls may be purchased for €15 each.

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