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4-input, 6-output USB Audio Interface with Microphone Preamp, Guitar Input, and Stereo Line-level Analog Input
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The MicroBook II is a compact, yet powerful feature loaded preamp that provides simultaneous inputs for a microphone, a guitar, and a keyboard or other stereo line level device. The mic preamp delivers neutral coloration and pristine sound, with 20dB pad and 48V phantom power for condenser mics. Programmable outputs provide flexible monitoring options.

Take it with you anywhere
The MicroBook II is an impressively small 5.5 by 3.6 by 1.25 inches, which means that it slides easily into your backpack - or a large pocket. It also sits nicely next to your laptop or desktop computer.

Engineered for the discriminating ear
The MicroBook II has been engineered with MOTU's renowned, award-winning audio interface technology, which delivers the uncompromising audio quality and rock-solid performance MOTU interfaces are known for worldwide. You can always record and mix with confidence, even in most demanding professional recording situations, knowing that decades of engineering experience are behind you, every step of the way. The MicroBook II delivers measured audio specs that rival interfaces costing hundreds more.

High-powered features and flexible controls
The MicroBook II can record and play all channels simultaneously, and high-speed USB 2.0 provides plenty of bandwidth, even at 96 kHz. The two digital rotary encoders not only look good, they feel good, too. Push the volume knob repeatedly to cycle among the main outs, headphones, or both, as indicated by the LEDs. For the mic input, adjust trim and toggle 48V phantom power or the -20 dB pad. Hands-on control is immediate and intuitive.

Mixing and effects
The MicroBook is an 8-bus digital mixer that lets you mix live inputs with each other - with or without host software tracks. With CueMix FX running on your computer, you can create separate mixes of live audio from your mic, guitar, and keyboard, and send each mix to separate outputs (main out, line out, and phones out) or any combination of all three.

MOTU interfaces are built to last
The MicroBook aluminum alloy chassis is lightweight, yet incredibly sturdy and durable, and designed to withstand the rigors of the studio, stage, and tour bus. In a world awash with cheap plastic, the cool touch of the MicroBook II's metal exterior in your hands is a reassuring reminder that you are holding quality engineering and construction built to last.

Advanced extras
The engineering behind the MicroBook II runs deep, to give your audio recordings the depth of quality they deserve

The MicroBook II includes AudioDesk, the workstation software for Mac OS X, which provides advanced recording, editing, mixing, processing, and mastering. AudioDesk delivers the power of modern digital audio workstation technology in an easy-to-use, inspiring multitrack recording experience. Together, AudioDesk and the MicroBook II transform your computer desktop into a complete, professional recording studio.

The included CueMix FX software for Mac OS X and Windows gives you graphic, on-screen control of the MicroBook II's on-board audio mixer, with up to four separate stereo mixes (a separate mix for each output pair). For example, you can mix all the inputs to the main outs, but also mix them to the line outs with completely different levels than the main outs. Advanced features include a tuner, oscilloscope, FFT/spectrogram, and phase analysis tools.

Technical Specifications

Technicial Specifications

Converters 24-bit
Sample Rates 44.1, 48, 88.2, 96kHz
Analog In 1 x XLR mic input with preamp
1 x 1/4" hi-Z guitar
2 x 1/4" TRS phone (balanced/unbalanced)
1 x 1/8" stereo "mini" (unbalanced)
Analog Outputs 2 x 1/4" balanced TRS main out
1 x 1/8" stereo "mini" line out (unbalanced)
1 x 1/4" TRS headphone
Digital Input - none -
Digital Output 1 x RCA coaxial S/PDIF
Computer I/O 1 x USB 2.0 "High-speed"
Sync Out S/PDIF
Headphone Output 1 x 1/4" TRS phone with volume control
Phantom Power +48V
Power Supply 1 x Micro-B USB
Top panel 2 x 3-segment ladder LEDs • main outs
1 x 4-segment LEDs • mic in
1 x 4-segment LEDs • guitar in
1 x 3-segment LEDs • line in
1 x 3-segment LEDs • line out
1 x LED • 48V phantom power
1 x LED • -20 dB pad
2 x LEDs • main/phone vol
1 x digital rotary encoder • mic trim
1 x digital rotary encoder • main/phone volume
Power Specifications USB bus power (computer)
USB-to-AC power adapter (iPad)
(USB cable and AC wall adapter included)
Dimensions Length: 5 ½ in / 14 cm
Width: 3 ? in / 9.2 cm
Height: 1 ¼ in / 3.2 cm

Mac System Requirements

  • Any Mac with an Intel processor
  • 4 GB RAM or more
  • Mac OS X version 10.6.8 or later
  • Available high-speed USB 2.0 port
  • A large hard drive (preferably at least 250 GB)

Windows System Requirements

  • Pentium 4 CPU (or equivalent) 1 GHz or faster
  • 4 GB RAM or more
  • Windows 10, 8, or 7
  • Available high-speed USB 2.0 port
  • A large hard drive (preferably at least 250 GB)

iOS Requirements

  • iOS 7 or later

Included software

  • CueMix FX
  • AudioDesk

Operating Systems

  • Mac OS X version 10.11, 10.10, 10.9, 10.8, 10.7, 10.6 (10.6.8 or later required)
  • Windows 10, 8, or 7

64-bit operation

  • Available for Mac OS X version 10.6.8 or later
  • Available for 64-bit versions of Windows 7 (or later)
  • Requires a 64-bit CPU (and host application for plug-in versions)

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