If you're still wondering, Put the Hard Limiter effect and grab a amplifier and put it at -1db. When you convert your file to mp3 128kbps (like most websites do) the threshold kind of disappears, filling the rest of the waveform. If you're going to export it as a WAV (default) then leave it at 44.1...
Used Synth1, ZynAddSubFX and TForce alpha plus.