E-MU EMU Ensoniq MROM1 ROM ~tested working 100%~ from MK-6 / MK6 Keyboard ~ RARE
You will need to have the latest OS for your synth to fully access all the data on this ROM. 

This ROM came from E-MU with the E-MU MK-6 Keyboard Synth and its very hard to find. The ROM is designed for optimized use with any E-MU Keyboard Synth and it functions great in all E-MU synths listed below as well. It contains 5 Banks of sounds (640 total) and 1099 different instruments.  

The E-MU MK-6 is the keyboard version of the popular Mo'Phatt rack module with the same powerful sounds and features. The MK-6 sound ROM is based on the same sample set of the Pure Phatt ROM, including the same presets of MP-7, but with an extra bank of presets.

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This ROM is designed to work perfectly in the following EMU gear:

Keyboards ~ 
MK-6, PK-6, XK-6,Vintage Keys and Ensoniq Halo keyboards

Command Stations ~ 
MP-7, PX-7, XL-7 & Proteus 2500 Command Stations

19" RackMount Synth modules ~
Proteus 1000, Proteus 2000, Proteus 2500

Xtreme Lead-1, Turbo Lead, Mo'Phatt, Turbo Phatt
Virtuoso 2000, Orbit 3, Vintage Pro, Planet Earth 
and the B3 synth rack mount modules.