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Poseidon Synth

By VirSyn

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Poseidon Synth - The Ocean of Sound

For all creatures in the ocean of sound - Sonic textures from other worlds, Analog signature sounds,  Cut-through-the-mix leads and silkily smooth pads: Poseidon sets a new standard for sound design and ease of use. All of this was made possible through a combination of the familiar, conceptual simplicity of the analog synthesis and our frequency domain based Spectral modelling synthesis technology.

Spectral model oscillator

Select a basic sound model from over hundred delivered with Poseidon. The basic sound model determines the sound characteristic you want to start: taking a artificial model like “Sawtooth” gives you analog style sounds. Use complex models from analyzed samples for earth shaking ambients and evolving pads.

Model parameters

High level controls allow for changing the spectral shape, the harmonicity and balances the level of residual noise and spectral amount of the oscillator model.

F-Domain Filter

The newly developed F-Domain filter allow for drastic changes in the resulting sound spectrum. Five filter types including lowpass/highpass characteristic can be used to shape the sound. They have the usual controls like cutoff but also very unusual ones like a variable slope ranging from 0 dB to 72 dB / Octave and independent controls for resonance and bandwidth! This kind of controls are only possible in the context of our F-Domain synthesis technology. This results in an extremely clear filter sound with breathtaking fast modulation possibilities.

The filter type “Inverse” interprets the sound model as a "Source" and a resonant body "Filter". The cutoff parameter shifts the filterbase - this is the equivalent to making the instrument body smaller or bigger.


This simple control gives your sound a distinctive moving distribution in the stereo panorama. Every atomic sound particle has it´s own path through the space !

Sound browser

The sound browser in Poseidon gives you a fast selection of sounds based on category and timbre.

Spectral modelling synthesis

• Harmonic/Inharmonic/Noise sound models
• 512 oscillators per voice
• 300 Sound models / 600 factory presets

Unique sound control

• Pitch modulation / Harmonicity control
• Time machine
• Timbre control
• Frequency Domain Filter
• Spatializer


• Uses programmable sequences with up to 32 steps. 
• Can trigger single notes and chords.
• Unique randomiser generates Arpeggios with 100% usability.
• 32 Arpeggios included, unlimited user arpeggios possible.
• For each step you can program tie, accent, transposition and note order


• Chorus
• Phaser
• Flanger
• Distortion (aliasing free!)
• Equalizer
• Echo/Delay
• Reverb


• Audiobus 2 compatible (Input slot)
• Inter-app audio compatible (Instrument/Generator)
• CoreMIDI / Virtual MIDI / Tempo Sync / MIDI Learn
• Audio recorder with Metronome.
• Audio pasteboard / File sharing.

What's New in Version 1.1.1

- Fixes crash on startup for iPad 3rd/4th generation

iPad Screenshots

iPad Screenshot 1
iPad Screenshot 2
iPad Screenshot 3
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iPad Screenshot 5

Customer Reviews

Another awesome app from an awesome developer

I love wavetable synths and was happy to see a new one pop up in the app store, especially from a developer like VirSyn. After a recent update caused a crash for many users a proper fix arrived within days. Responsiveness to these sorts of things goes a long way and shows a commitment to the customer and product. The app itself is easy to use and has a look and feel that will be familiar to fans of the VirSyn app family. The sound from Poseidon, however, is unlike anything encountered so far... easily better than Nave. It effortlessly oozes unusual sounds which are as rich as they are haunting; the vocal textures are especially excellent. I am looking forward to integrating this into my sonic repertoire.

Money well spent

Every time I have had an issue with this synth the problem has been taken care of within a day. Thanks for actually listening to your customers. You are doing a great job. The audio import function should be a highlighted feature now that it is present 😎. Such a great sounding synth. It may use a lot of cpu, but I'm running on a 4th generation iPad. I don't expect perfection when with an outdated device. I appreciate you fixing the problems associated with older devices. If you are thinking of buying this app, I can't recommend it enough. Money has been well spent. Once again, great job dev's!

Groovy baby.

Sure this has a few bugs. A key I had on hold wouldn't come off of the hold, and the whole app just froze doing nothing other than playing that key until I forced the app closed.
It has been very stable on my iPad Air 2.
As a fan of all VirSyn synths, I couldn't divert my loyalty from them just because a few early bugs need some fixing. VirSyn is on top of things and already updated with some resolved issues. Could still be improved a bit. That said, don't worry about it, this is an excellent synth.,

Of all my iOS synthesizers, this has some of the best sound design capabilities for atmospheric, evolving sounds.
Yes, it would benefit from having user wave import options, but it's not a deal breaker.
I am enjoying Poseidon and have no doubt it will improve. You can trust VirSyn, and you get quality when you buy their stuff.

Poseidon Synth
View in iTunes
  • $19.99
  • Category: Music
  • Updated:
  • Version: 1.1.1
  • Size: 336 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 8.0 or later. Compatible with iPad.

Customer Ratings

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