Emulator X software is compatible with PCs running the Microsoft Windows operating system.

[1] The sound card acted as a hardware dongle to prevent unauthorised use without the purchase of an E-MU branded device.

Emulator X was largely based on E-MU's hardware sampler operating system, EOS.

As such, it replicates or expands upon most of the design and features available in the final revision of the operating system, EOS 4.70.

[3][6] It is also capable of importing and exporting bank files in EOS format for compatibility with E-MU's legacy hardware samplers such as the Emulator IV and E4 Ultra series devices.