Korg RPC-04/MSC-04 1988

Korg MSC-04 Program Card (included)

The MSC-04 is a ROM-based program card from Korg’s MSC (Music Sound Collection) series, designed for use with the M3R, M1, and other compatible synths.

• Contains preset patches and combinations—cannot be edited
• Offers a curated set of sounds, often themed (e.g., basses, synth leads, orchestral)
• Plug-and-play expansion of the M3R’s internal library

Exact contents depend on the theme of the card, but MSC-04 is typically tailored toward specific sound types or genres.

Korg RPC-04 RAM Card (included)

The RPC-04 is part of the Korg RPC (RAM Program Card) series. Unlike the MSC cards, which are read-only, the RPC-04 is rewritable, allowing users to store and load custom patches and combinations.

• Used for saving user-created programs and combinations
• Works with Korg M1, M3R, and other compatible AI-series synths
• Each RPC card typically holds 100 Programs + 100 Combinations
• Useful for backing up custom patches or loading alternative sound sets

RPC cards were often sold pre-loaded with sounds (either from Korg or third parties), but can be completely overwritten and reused.

Korg M3R (module not included for sale, just FYI)

The Korg M3R is a rack-mounted synthesizer/sound module released in 1989, based on the same AI (Advanced Integrated) synthesis engine found in the legendary Korg M1. It's known for:

• 16-voice polyphony and 8-part multi-timbrality
• A rich library of PCM waveforms
• Built-in effects and complex modulation capabilities
• Classic late-’80s/early-’90s digital sounds—pianos, synths, strings, pads, and more
• Expandability via ROM program cards (MSC series) and RAM cards (like the RPC series)

The M3R remains popular among vintage synth collectors and musicians looking for authentic ‘80s/’90s textures.