From today, the Bolt-On DLC is $9.99 per set. Each set of Bolt-On DLC contains a set of plugins/engines to transform your sound making ability! From the sample-bending Proteus, though the unique Nitroverb and Oxyverb reverbs, to Oscillator Synchronisation, this ultimate kit of audio effects transforms the vanilla SFXEngine into an insanely powerful professional sound creation tool.

Find SFXEngine and all DLC here:
https://steamproxy.com/steamstore/app/2438590/SFXEngine/

The SFXEngine Bolt-on Full Set has a 25% discount. This bundle contains all ten 'Bolt-on' Engine Sets: Sample, Analogue, Amplitude, Pitch, Pan, Filter, Delay, Reverb, Distortion, and Special. As with all Steam Bundles, you pay only for what you don't already own.
https://steamproxy.com/steamstore/bundle/38164/SFXEngine_Bolton_Full_Set/

Happy Sound Making!

Mark