Destination - Emu EOS

History and File Format
With the advent of the modern Emulator 4 sampler series (the E4, E64, E6400, others), E-mu created a monster OS called EOS (Emulator Operating System). They completely redid the file format, which was messy after the ESi tweaking, although the disk format and the basic architecture remained the same. EOS took advantage of the large screen display they started manufacturing. Any EOS sampler is a joy to work with, as the large screen facilitates operations extremely well.

Architecture Description
The architecture is similar to the ESi: a Bank is the single type of file this format accepts. As described in the E3/E3X/ESi section, a Bank contains a set of Presets and Samples, and when this is loaded into the E-mu, it replaces all the memory in the unit. This results in some bulky file handling; for example, if you want to replace a single parameter in a single Preset, in order to save it, you have to rewrite the entire Bank - this can be as big as 128mb!

The basic Instrument unit is the Preset. It can point to some or all the Samples contained in the Bank. You can place a maximum of 128 Voices within a Preset, and place a keymap of Samples in each Voice. You can still link Presets, but there is less need to with the power of the EOS. While Preset memory and Sample memory are still separate and have fixed allocations, the Preset memory is appreciatively larger; 3580K as opposed to 228K for the E3/E3X/ESi.

Import Formats
An EOS Emu sampler can import Akai S-1000 and S-3000 Programs/Samples, Roland Performances and Patches, and Ensoniq Banks and Instruments.