Are you trying to open that used Hypersonic 2, or are you just looking for its specific sounds ?
This article explores the enduring legacy of Steinberg's Hypersonic 2, a legendary virtual instrument, and addresses the complexities surrounding its use on modern 64-bit systems. Hypersonic 2 Vst 64 Bit Download
What is your primary (e.g., FL Studio, Ableton, Cubase)? Are you trying to open that used Hypersonic
Steinberg Hypersonic 2 does not have a native 64-bit version a legendary virtual instrument
Hypersonic 2 was developed by Steinberg (makers of Cubase) and the sound design wizards at Wizoo. It was a true 16-part multitimbral workstation, meaning you could load up to 16 different instruments in a single instance to create a whole arrangement.