Are you asking about the MacroMind•Paracomp Sound System Pro and SoundEdit Pro? Also sold as a Farallon product (before or after MacroMind. I think first.)
For digitizing sound with a MacRecorder, think in terms of a 68000 or better, and 512kB or more of RAM. To use HyperSound and its Toolkit stacks, you need at least HyperCard 1.2.1 and a Plus with at least 1MB and 128kB ROMs. You need two serial ports for stereo, and DB-9/miniDIN-8 adapters if you use an oldie.
SoundEdit Pro needs System 6.0.7 or higher, a 68020, at least 2MB of RAM and an Apple sound chip. System 7 needs at least 4MB of RAM. You can then use the MacRecorder or built-in Apple recording, or anything that supports Macintosh Sound Input Manager. So the Classic may be able to cope if it has the RAM expansion card and full RAM.
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