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Introduction
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Thanks for choosing the Transit USB by M-Audio.Transit USB is your compact, professional
audio solution for any Windows or Macintosh computer*, using the convenience of USB
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connectivity – no need to disassemble your computer, no bulky external power supplies.
Transit USB gives you full 24 bit digital audio at sampling rates from 8 kHz to 96 kHz, with
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the flexibility of both analog and optical digital connectors in a lightweight form factor you
can carry with you anywhere.
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Please take the time to read this concise Users' Guide. It will explain how to install the
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Transit USB on your computer, and tell you how to get the best performance out of your
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Transit USB audio interface.
* must meet minimum system requirements
What's in the Box?
The following items are included with your Transit USB:
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Transit USB audio interface
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One (1) standard USB cable
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One (1) TOSLink to 1/8" Optical plug adapter
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M-Audio Driver CD (includes driver installation software)
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Users' Guide and Warranty Card
Transit USB Specifications
Product and Operational Features:
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Single USB 1.1 connection for input and output
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S/PDIF 1/8" mini Optical In or 1/8" mini Analog Mic/Line In
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S/PDIF optical out and 1/8" mini Analog Line Out
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Sleek, slim plastic case with blue power LED.
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Completely USB powered (no power supply needed)
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One year warranty
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Technical Features:
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Supports the following sampling frequencies (in Hz): 8000, 9600, 11025, 12000, 16000, 22050,
24000, 32000, 44100, 48000, 88200*, 96000
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Supports 16 & 24-bit Linear PCM I/O, 16-bit AC-3 and 16-bit DTS output over S/PDIF
TOSLink
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Supports the following audio protocols: ASIO,WDM, MME, SoundManager, CoreAudio
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Unique hybrid optical/analog input jack automatically detects whether input is analog or
optical digital
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1/8" mic input provides power for electret condenser mics
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software-controlled input and output levels, using standard Windows or MacOS
volume controls
* Transit USB does not support analog recording at 88200 Hz.
Audio Performance Specifications:
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Input: Dynamic Range 100 dB (typical –60 dB input, A-weighted);
Signal-to-Noise Ratio 100 dB (typical,A-weighted); THD+N –90 dB = 0.00316% (typical)
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Output: Dynamic Range 104 dB (typical –60 dB input, A-weighted); Signal-to-Noise
Ratio 104 dB (typical, A-weighted); THD+N –94 dB = 0.00316% (typical)
System Requirements, Windows:
Minimum:
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Pentium II 350 MHz
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64 MB RAM
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CD-ROM drive
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Available USB 1.1 port
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Windows 98SE, Me, 2000 (SP4) or XP (SP1)
Recommended:
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Pentium III 500 MHz or faster
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DVD-ROM drive and DVD player application (for AC-3 & DTS pass-through)
• 128 MB RAM or more
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