SRX Expansion Boards
Roland 
The SRX are a series of expansion boards produced by Roland Corporation. They are small boards of electronic circuitry with 64MB ROMs containing patches (timbres) and rhythm sets (drum kits). They are used to expand Roland’s synthesizers and workstations (keyboards or sound modules).
List of SRX expansion boards
* SRX-01 Dynamic Drum Kits
* SRX-02 Concert Piano
* SRX-03 Studio SRX
* SRX-04 Symphonique Strings
* SRX-05 Supreme Dance
* SRX-06 Complete Orchestra
* SRX-07 Ultimate Keys
* SRX-08 Platinum Trax
* SRX-09 World Collection
* SRX-10 Big Brass Ensemble
* SRX-11 Complete Piano
* SRX-12 Classic EPs
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