Sound Devices USB-Pre 2 Interface

High resolution, portable hardware interface for Mac- and Windows-based digital audio

The USBPre 2 interfaces professional microphones, line-level sources, consumer audio electronics, and S/
PDIF digital sources with Mac OS and Windows computers via USB. Its discretetransistor microphone preamps with 24- bit converters and sampling rates up to 192 kHz provide the highest performance in a portable interface. Peak limiters, high-pass filters, and a 15 dB pad add overload protection. All analog-to-digital and digital-to-analog conversion is done outside of the computer, in the USBPre 2, for superior audio performance.

Features

- Extended bandwidth, low-noise microphone preamplifiers with 48 V phantom, limiters, high-pass filters,
and 15 dB pad.
- Dynamic range greater than 114 dB (in 24-bit operation).
- Flat 10 Hz to 22 kHz audio bandwidth with ultra-low distortion characteristics.
- Each input individually selectable between microphone, line, and aux level signals (both channels selected simultaneously for S/PDIF connections).
- Precision, 23-segment, multicolor LED peak/VU meter, selectable between input and output sources.
- Balanced outputs on XLR connectors with dedicated level control can be used to drive
- Mix control enables zero-delay monitoring of source audio, computer audio, or a mix of both source and computer audio for multitrack recording or computer telephony.
- Phono (RCA) jacks connect Aux Output to external loudspeakers or preamplifiers.
- Bus powering via USB for convenient, single-cable connection to the computer.
- In Stand-Alone mode the USBPre 2 operates as a microphone preamplifier and analog-to-digital converter.
- Hardware loop-through for test & measurement to send computer
audio directly back to an input.
- High-strength extruded aluminum chassis.
- Mac® OS X 10.4+, Windows®XP/ Vista/7, and Linux, class-compliant audio device.
- Additional features controlled by hardware DIP switches on the back panel; no software-only features and no control panel.

Frequency Response (reference 1 kHz)

10 Hz - 20 kHz, +/- 0.5 dB (any input to PC recording) / 10 Hz - 20 kHz, +/- 1.0 dB (PC source to AUX output)

Input Sensitivity (typical, for 0 dBFS)

Mic: -9 dBu min, -60 dBu max / Mic (15 dB pad): +6 dBu min, -58 dBu max / Line: +29 dBu min, +10 dBu max / Aux: +12 dBu min, -7 dBu max

A/D Converter

24-bit resolution. 114 dB typical dynamic range (22 Hz - 22 kHz bandwidth, A-weighted)

D/A Converter

24-bit resolution, 112 dB typical dynamic range (22 Hz - 22 kHz bandwidth, A-weighted)

Sample Rates / Bit Depths Recording

8-, 16-, or 24-bit at 8, 16, 32, 44.1, 48, 96, or 192 kHz

Sample Rates / Bit Depths Playback

24-bit at 8, 16, 32, 44.1, 48, 96, or 192 kHz