The Power Macintosh 6100 was Apple Computer's first computer to use the new PowerPC RISC type processor created by IBM and Motorola. It came in the Centris 610's "pizza box" low-profile case, and superseded the Quadra series that used Motorola's 68040 processor, Apple's previous high end workstation line. Power Macintosh 6100 was first introduced in 1994, and featured a 60 MHz (later 66 MHz) PowerPC 601 processor. It was later complemented by an AV version, which featured additional audio and visual enhancements such as composite and S-video input/output and full 48 kHz 16-bit DAT-resolution sound processing, invaluable to multimedia professionals.