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Favorite Free Virtual Effect Processor - Best Audio and MIDI Software - KVR Audio Readers' Choice Awards 2020
ValhallaFreqEcho by Valhalla DSP is a Virtual Effect Audio Plugin for macOS and Windows. It functions as a VST Plugin, an Audio Units Plugin, a VST 3 Plugin and an AAX Plugin.
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30-Day: 340; 7-Day: 270; Yesterday: 321

ValhallaFreqEcho is a frequency shifter, combined with an analog-style echo. The MkI release adds a GUI as well as the ability to sync the delay time to the tempo. The sonic results encompass barberpole flanging and phasing, dub echoes that constantly rise or fall in pitch, the classic detuning of frequency shifting, and a variety of psychedelic, evolving self-oscillation patterns that will spin around and through your skull.


  • Bode-style frequency shifting.
  • Analog style delay, with delay time set via knob or synced to tempo.
  • Low Cut and High Cut filters for shaping delayed sound.
  • Feedback control (can produce self oscillation even with no input).
  • Mono/Stereo input, stereo output.

Latest User Reviews

Average user rating of 4.50 from 2 reviews

Reviewed By nonewwavenofun [all]
August 23rd, 2020
Version reviewed: 1 on Windows

Fantastic sounding dub delay with a lovely GUI. Can do some great self-oscillation if you crank the feedback dial. My only problem is that the modulation gets very OTT very quickly - would appreciate more range.

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Reviewed By wk1630 [all]
September 24th, 2018
Version reviewed: 1 on Windows

good plugin no issues.

easy to use installs nicely.

good plugin no issues.

easy to use installs nicely.

Read Review

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