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vStack vStack vStack
vStack by Granny's Audio is a Standalone Application for macOS and Windows. It functions as a Standalone Application.
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vStack from Granny's Audio is an easy to use sampler & looper application.
It is designed for easy control, and very easy timing syncing across all channels.

vStack supports the use of audio files and live recording, that both can be synced to the metronome, each with one click.


  • Metronome - The master metronome is the base for syncing every loop channel.
    - When a channel is "locked" to it, it will follow its speed and "phase".
    - The live recording's duration is based on the metronome's tempo and time signature.
    - The metronome produces a "click" sound to keep you also in sync! it can be toggled on or off, but has no effect on the metronome's function. it also has its own level.
  • Loop Channel - The loop channel's are the base of vStack.
    - Load either and audio file or live record the input.
    - Set the "original length" of the channel to use as the recordings time, or the duration when the channel syncs to the metronome.
    - Click & Drag to select portion of the channel. Like this, you can trim preceding or following noise or silence, or just select only a part of the audio to be looped.
    - Every channel has its own level and panning controls.
    - There are sends, with pre and post options, to all 4 effects.
    - There are some important differences when a channel is locked to the metronome (synced).
    - When clicking the record button, it wait for the next "1" beat to start.
    - The playback speed it tied to the metronome speed, and is changed only by the metronome's BPM or time sig, and by setting different "original length" of the channel.
    - The channel will not start if the metronome is OFF.
    - You can add or remove loop channels.
    - Every channel can be assigned to a keyboard and MIDI "hotkey" to toggle it on and off.
  • MIDI Mapping - You can control vStack away from your keyboard and mouse now.
    With very easy steps you can map almost any parameter or button to your MIDI controller.
    - Enable the MIDI mapping
    - Hover over a parameter or button
    - Move your MIDI controller.
    You can see your mapped parameters and remove anyone independently or all together.
  • Effects - There are 4 effects at the output. Each effect has its own level, and can separately be toggled on & off.
    - Overdrive
    - Chorus
    - Delay
    - Reverb.
  • Input - Use the input to record on a channel, or pass it through directly the the effects and the output.
    - The input also has sends and pre / post options for the effects.
    - The input is intended to be used for both loop recording, and to solo over the created loop "backing track".
  • Output - The output includes a compressor and a 3band equalizer.
    - The equalizer's first and last bands, can be also set as shelving filter.

See more and get vStack at Granny's Audio (Mac & Win) or at the Mac App Store (Mac).

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