The Sound Blaster Audigy 2 (SB0240) (September 2002) featured an updated EMU10K2 processor called CA0102 to gain access to CA0151 which is a separate chip. Collectively CA0102, CA0151 was sometimes referred to as EMU10K2.5 (The CA0102 chip alone is just a version of Emu10k2).
Documentation/Manuals:
