The extremely rare 32MB Protean Drum is the original sound ROM for the PX-7 Command Station. As stated in the PX-7 owner's manual: "The E-MU sound engineers spent six months meticulously sampling acoustic drum kits in professional studios around the U.S. to build this diverse collection of drum sounds. These drum kits have been optimized for the PX-7's advanced synthesis architecture, with multiple cross-switch layers built into each instrument."
This ROM will work in all Command Station units (MP-7, XL-7 and PX-7), Proteus 2500 as well as all E-mu Proteus 2000 series sound modules including Mophat, Orbit 3, Planet Earth, XL-1, Vintage Pro and Virtuoso (requires O.S. version 2.26). It will also work in the PK (Proteus Keys) series units (PK-6, XK-6, MK-6 and VK-6).
ROMs are New Old Stock units that are fully tested and guaranteed.