One Synth Challenge


Version 2.9.5 Released 3/17/18

+ 30 Solidtrax Presets !


Solidtrax have created factory banks for Synapse Audio Dune 2, u-he Bazille, Icarus Tone2, Tal Bassline, plus expansion banks for Spire and VPS Avenger.


This is the Fathom download page for the One Synth Challenge 109.

The download includes the full Polyphonic version of Fathom for OSC users only.

Please do not distribute this link (except to other OSC contestants).



Additional prizes provided by Seaweed Audio.

First Prize

Winner's Choice of one of the following Software Synthesizers.

Vengeance Sound

VPS Avenger



d16 group


Xfer Records


Lennar Digital


KV331 Audio

SynthMaster Standard


Second Prize

$100 toward any software instrument of the winner's choice.

Third Prize

$100 toward any software instrument of the winner's choice.

First through Fifth Prize

Lifetime upgrades to Fathom Synth.



Windows and  Mac

The full download includes all preset and waveform folders.


What Changed?


Help Support Fathom

If you find yourself using Fathom regularly after the contest please consider buying it.

This will help us continue with Fathom's feature development.


AKWF Waveforms

By Adventure Kid Research & Technology (AKRT)

Special thanks to BlitBit.

This waveform library contains over 4000 waveforms.

These single cycles are in WAV format so they can be easily previewed and loaded by Fathom.

Use either the Wave Draw or Wave Table oscillators. 


Galbanum Waveforms

The ultimate library of 25,000 single cycle waveforms.

Also provided in WAV format which can be loaded by Fathom.