Sound max is a built in sound chip like the sigma tel, i just named the wrong one. Yes the Tascam is a sound card/interface. You do not need the built in, just attach the USB cable and then setup MC to use the Tascam as both playback and record.
USB audio/MIDI computer interfacing Mac and Windows compatible
Two XLR-fed phantom-powered mic inputs with inserts Two line level inputs (switchable to guitar level) Records at up to 48kHz, 24-bit resolution
16 channels of MIDI I/O
Adjustable zero-latency direct monitoring
Two line outputs with level control Headphone output with level control
Self-powered via USB: perfect for both studio and location recording
Includes ASIO, WDM, GSIF and Apple Core Audio (OS X) drivers
Includes Cubase LE 48-track / 96kHz audio recording/MIDI sequencing software
Includes
GigaStudio 3 LE 64-voice sampling workstation software Compact and rugged steel construction
Dimensions: 5.9"W x 2.4"H x 7.7"D
Weight: 2lb
Tascam US-122.
Tascam US-122.