Positive Grid OMNYSS review

Designed for sonic explorers, Positive Grid’s OMNYSS takes your guitar tone to hitherto unimagined realms

Positive Grid's OMNYSS amp and effect suite on a space background
(Image: © Positive Grid)

Guitar World Verdict

Definitely not one for traditionalists, this thoroughly modern amp and effects suite delivers tight, high-gain tones and stunning three-dimensional effects. A shot in the arm for tired old guitar sounds.


  • +

    Amazing shimmer, synth, and glitch sounds for your guitar

  • +

    Easy to dial in unique yet usable sounds

  • +

    Great selection of high-gain tones


  • -

    Not for traditional tone lovers

  • -

    Takes time to load in your DAW

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Just the mere mention of ‘epic soundscapes’ is enough to perk up this reviewer’s ears, so when Positive Grid’s OMNYSS announced its intention to affect our guitar tone in a ‘sonically disruptive’ way, our curiosity was naturally piqued.

At a glance

Positive Grid OMNYSS three amp models

(Image credit: Positive Grid)

Price: $99

Type: Amp and effects modeling software

Amp models: 3 – two high gain, one clean

Cab models: 3 – three matched 4x12 cabs

Effects: 6 – Gate, Compressor, Pitch Shifter, Overdrive, Reverb, Delay

Compatibility: PC/Mac

Buy from Positive Grid

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Matt McCracken
Junior Deals Writer

Matt is a Junior Deals Writer here at Guitar World. He regularly tests and reviews music gear with a focus on guitars, amps, pedals, modelers, and pretty much anything else guitar-related. Matt worked in music retail for 5 years at Dawsons Music and Northwest Guitars and has written for various music sites including MusicRadar, Guitar Player, Guitar.com, Ultimate Guitar, and Thomann’s t.blog. A regularly gigging guitarist with over 20 years of experience playing live and writing and recording in bands, he's performed everything from jazz to djent, gigging all over the country in more dingy venues than you can shake a drop-tuned guitar at.