Here is a rough guide to the E-mu Proteus 2000 series Expansion Sound ROM's.
Updating for 2015. Guide prices here to help. Including ROM Part Numbers where available.
Pricing and value must be realized due to technological advances especially with regards to software instruments.
The original Composer sound set is now available in software. The FREE proteus VX software synth includes the entire composer sound set! this should make anyone pause for thought before buying a proteus 2000! Proteus LE bundled with the E-mu Xboard controllers also includes this sound set. The Composer sounds also come with ALL versions of E-mu Emulator X.