Technical Specifications Sample rates 44.1, 48, 88.2, 96, 176.4, 192 kHz Mic/guitar inputs 2 x combo XLR/TRS mic/guitar inputs Preamp gain: 0 to +60 dB (digitally controlled) Instrument gain: 0 to +30 dB (digitally controlled) Analog inputs 6 x 1/4" TRS line inputs (balanced/unbalanced) Max level: +24 dBu (digitally adjustable -96 to +22) Analog outputs 10 x 1/4" TRS line out (balanced, DC coupled) Max level: +20 dBu (digitally adjustable -4 to +20) 1 x 1/4" TRS stereo headphone Digital I/O 1 bank (8 ch) of ADAT optical at 1x sample rates 1 bank (4 ch) of SMUX optical at 2x sample rates Switchable to stereo TOSLink (optical S/PDIF) 1 x stereo S/PDIF on RCA (up to 96 kHz) Total I/O 18 in / 22 out (40 total) at 1x sample rates 14 in / 18 out (32 total) at 2x sample rates 8 in / 12 out (20 total) at 4x sample rates Computer I/O 1 x USB 2.0 audio class compliant USB 3.0 and iOS compatible Computer I/O channels 64 in/out at 1x (44.1 to 48 kHz) 32 in/out at 2x (88.2 to 96 kHz) 24 in/out at 4x (176.4 to 192 kHz) MIDI I/O 1 x MIDI IN 1 x MIDI OUT 16 MIDI channels to/from computer host Headphone 1 x 1/4" TRS stereo phone (assignable) Phantom power 2 x individual +48V Front panel 1 x 1/4" TRS headphone output 2 x XLR/TRS combo inputs 1 x digital rotary encoders • main/phone vol/pwr 2 x digital rotary encoders • mic/instr input gain 4 x switches • (2) Pad and (2) 48V Phantom pwr 128 x 48 pixel LCD for level meters / menu nav Power External 12-18V DC power supply 1.0A max • tip pos or neg Dimensions and weight (width x depth x height, enclosure only) 8.6 x 7 x 1.75 inches 22 x 17.75 x 4.5 cm 2.3 lbs / 1.04 kg Mac System Requirements 1 GHz Intel-based Mac or faster 2 GB RAM; 4 GB or more recommended Mac OS X version 10.8 or later Available USB 2.0 or 3.0 port A large hard drive (at least 500 GB for recording) Windows System Requirements 1 GHz Pentium-based PC compatible or faster 2 GB RAM; 4 GB or more recommended Windows 7, 8 or 10 Available USB 2.0 or 3.0 port A large hard drive (at least 500 GB for recording) Web App Support Any web client platform: Mac, Windows, Linux, iOS, Android Any web browser: Safari, Firefox, Chrome, Opera, Explorer, etc. Included Software MOTU Discovery App for Mac & PC (finds connected MOTU interfaces) MOTU Discovery App for iOS (available from Apple App Store) MOTU Pro Audio Control web app (served from the hardware itself) MOTU Audio Tools (FFT, oscilloscope, X-Y plot, phase analyzer) AudioDesk 4.0 for Mac & PC (separate download) Operating Systems For computer audio I/O: Mac OS X 10.8 or later; Windows 7 or later For web app control: Mac, Windows, Linux, iOS, Android Analog I/O Specifications Connector type Dynamic range (A-weighted) THD+N (unweighted) Max level Trim range (in 1 dB steps) Line output 1/4" TRS, balanced, tip hot 123 dB -112 dB +20 dBu 24 dB (-4 to +20) Line input 1/4" TRS, bal/unbal, tip hot 110 dB -102 dB +24 dBu 118 dBu (-96 to +22) Mic input XLR, balanced, pin 2 hot 112 dB -104 dB +24 dBu (with pad) 56 dB Phones 1/4", TRS stereo 112 dB -94 dB Max. 80 mw 128 dB Compatible Mac Software The UltraLite-mk4 ships with standard Core Audio drivers for Mac OS X for compatibility with virtually all Core Audio-compatible apps, including: MOTU Digital Performer Avid Pro Tools (version 9 or later) Apple Logic Pro Apple Logic Express Apple Garage Band Apple SoundTrack Pro Ableton Live Presonus Studio One Propellerhead Record & Reason Steinberg Cubase Cockos Reaper Native Instruments Kontakt Waves stand-alone apps (and plug-ins, via compatible host) Compatible Windows Software The UltraLite-mk4 ships with standard ASIO and Wave drivers for Windows 7, 8 and 10 for compatibility with virtually all ASIO- and Wave-compatible audio apps, including: MOTU Digital Performer Avid Pro Tools (version 9 or later) Ableton Live Cakewalk Sonar Cockos Reaper Image Line FL Studio Native Instruments Kontakt Presonus Studio One Propellerhead Record & Reason Sony Vegas Pro Sony Sound Forge Sony Acid Steinberg Cubase Waves stand-alone apps (and plug-ins, via compatible host) UltraLite-mk4 Feature Summary 18 x 22 USB audio interface with 40 simultaneous audio channels 2 mic/guitar inputs, 6 line ins, 10 line outs, phone out, S/PDIF digital I/O and 8-channel optical I/O for 18 inputs and 22 outputs. Superb analog quality with ultra-low latency Renowned ESS Sabre32™ DAC technology delivers 123 dB dynamic range on analog output. New, optimized drivers deliver rock-solid performance and industry-leading low latency. DSP mixing and effects processing Flexible 48-input digital mixer with 7 stereo aux busses, 3 group sends, access to eight network inputs, and DSP effects, including reverb, 4-band EQ, gate, and compression. Modeled vintage effects processing Classic reverb. Compression modeled after the legendary LA-2A compressor. EQ modeled after British analog console EQs. Flexible matrix routing and splitting Send any input to any output, or multiple outputs. Includes routing to and from the computer. Web app control Control everything from your favorite web browser on a laptop or mobile device (table or smartphone) through a shared Wi-Fi network. Universal connectivity Connects to any computer with hi-speed USB 2.0 (audio class compliant, compatible with USB 3.0 and iOS). Compatible with all audio software. Comprehensive metering The large backlit LCD lets you view all signal activity at a glance with detailed metering for all analog and digital I/O. Access hardware settings from a simple and convenient menu. AudioDesk Includes AudioDesk workstation software for Mac and Windows with 24-bit recording, sample-accurate editing and 32-bit mixing and mastering.