Audition 1.5 uses old windows MME drivers, or possibly slightly newer WDM drivers, according to the specs from TASCAM the US-1800 uses ASIO (PC or Mac), or Core Audio (Mac only) drivers, it may also use MME and WDM driver but not list them.
US-1800 SPECIFICATIONS
•16 simultaneous inputs
•4 simultaneous outputs
•14 analog inputs
•(8x) XLR Mic inputs with phantom power
•(2x) 1/4" TRS LINE/GUITAR inputs on the front panel
•(4x) 1/4" TRS LINE inputs on the rear panel
•Stereo S/PDIF Digital Input/Output
•Zero-latency Hardware Monitoring
•Independent Monitor and Headphone Outputs
•Stereo monitor output (DAW return (stereo) and input (mono))
•16-channel MIDI Input and Output
•USB 2.0 connection to Mac/Windows
•Up to 96kHz/24-bit Audio Resolution
•Cubase LE 5 48-track workstation software included
•ASIO and Core Audio support
•Windows XP, Windows Vista, Windows 7 and Mac OS X compatible
