Hyperprism Free Plug-Ins (PC) - Version 2.5 We're now giving away free Windows 95/98/NT Direct X Plug-ins which include Ring Modulator, Echo, Vibrato, plus several demos to try. (note: demos have a ten second drop out, but the freebies have no restrictions)Hyperprism-DX 2.5 is a complete collection of software DSP effects for Windows. With thirty five high-quality professional audio effects, Hyperprism-DX 2.5 works right inside any of the popular sound editing applications for Windows 95/98/NT using the Microsoft Direct X (Active Movie) plug-in format. Hyperprism deep realistic reverbs, ear-tingling Harmonic Exciter and Bass Maximizer, rich analog-sounding vocoding, pitch shift and ring modulation, fat resonant filters and unique stereo processes are used on chart-topping Celine Dion remixes, Everclear's platinum album and dozens of blockbuster films. The pros agree: No other software offers this many plug-ins for so little money.