I don't think this is a Rift Audio issue so much as I think it's an Electronauts issue, but not sure where else to post this.
When playing Electronauts, when the bass or kick track are active (both effectively a form of bass) my audio sounds like blown speakers. I don't get this with any other game. Any suggestions?
What kind of speakers and sound card are you using? It sounds like the real low end of the audio is getting heavily compressed. Is it just the Rift headphones?