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 Acid Zone Retro by SonicXTC is a Virtual Instrument Audio Plugin. It functions as a VST Plugin.
Acid Zone Retro
Product Acid Zone Retro
Developer SonicXTC
Price (MSRP)
No Longer Available
Type / Tags Synth (Analogue / Subtractive)Pattern Sequencer
Plug-in, App & Soundware Format(s)
Operating System Availability
Download Released
- Released
Max. 6 items
Latest Version Changes [view all]

Acid Zone Retro, a freeware monophonic single oscillator synthesizer, is a synth that harkens back to the DIY analog synths of the past. AZR-01 is simple to program and has all the synthesis programming parameters available right on the front panel. Tweak a knob and you immediately begin to sculpt the sound. It comes with 32 presets to get you started.

The sequencer included in AZR-01 was derived from reviewing the many sequencer schematics available on the open Flowstone/Synthmaker community forum. We made our own proprietary modifications, but wish to thank all the developers for sharing their groundbreaking work.


  • 64 user presets.
  • 32 custom presets.
  • MIDI automation.
  • Delay and Reverb effects.
  • VST 2.4.
Made with FlowStone
Latest User Reviews Average user rating of 0.00 from 0 reviews


Discussion: Active
20 March 2014 at 12:56pm

Downloads and Web page links dont function (in 20/03/2014). I need cut the end of the link (http://www.vstplugin-sonicxtc.com/vsti-synths to http://www.vstplugin-sonicxtc.com ) for acces at sonicxtc site.

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