6Introduction1.1 OverviewThe US-224 is a USB controller designed forCubasis and other Digital Audio Workstation(DAW) software applications. Its designincorporates a two-input, two-output 24-bitaudio interface, a 16-channel MIDI interface,and a control surface for your most-usedmouse functions.Our goal was to create a device to makeyour DAW software as easy to use as aPortastudio. The transport and othercontrols are designed and laid out to lookand function just like a Portastudio – ifyou’ve ever used a tape recorder, you knowhow to use the US-224.Because the US-224 is USB based, it’s theideal companion to any desktop- or laptop-based digital recording setup. And since it’sas compact as a laptop, it can be combinedwith one to create a complete portabledigital audio workstation solution.1.2 FeaturesThe input section comprises a 24-bit audiointerface, capable of streaming twosimultaneous tracks of audio into yourcomputer. Inputs include two balanced XLRmic inputs, two 1/4” unbalanced line inputs(switchable to high-impedance, for directinput of a guitar, bass or other hi-Z source),and an S/PDIF digital input. Outputs includea pair of unbalanced line outputs on RCAconnectors, S/PDIF output, and separateheadphone output.The US-224 also features MIDI Input andOutput ports, allowing you to send andreceive data and MIDI Time Code (MTC)from your MIDI-based keyboards and otherdevices.The US-224’s control surface includes avariety of controls which make working withaudio software faster and easier. Thechannel section of the control surfaceconsists of four channel faders (plus onemaster fader), four MUTE/SOLO buttons, aswitch to toggle Solo and Mute functions,and individual record-ready and selectswitches. The master section features aDATA wheel, PAN control (assigned bypressing the channel SELect key) anddedicated transport and locate controls,offering one-button access to these often-used functions.1.3 What’s in the packageThe US-224 package contains the followingitems. When opening the package, pleasemake certain that all the included items arepresent. If anything is missing, contact thedealer where you purchased it. US-224 Controller USB Cable CD-ROM containing driver software andCubasis VST1.4 Nomenclature used inthis manualThe following conventions will be used inthis manual: ALL CAPS will be used to designatephysical buttons, faders, controllers andLED indicators on the US-224. BOLD CAPS will be used to designatephysical connectors on the US-224 Italics will be used to designate softwaredialog messages Underlined Italics will be used todesignate software menu functions andon-screen controllers.