Sound Devices' USBPre
2 is a high-resolution, portable hardware interface for Mac- and
Windows-based digital audio. The USBPre 2 is the industry's highest
performance and most flexible portable interface, connecting professional
microphones, line-level sources, consumer audio electronics, and S/PDIF
digital sources with Mac OS and Windows computers via USB.
2 includes two discrete-transistor microphone preamps with 24-bit converters
and sampling rates up to 192 kHz. These preamplifiers provide the highest
performance in any portable interface. Their topology is shared with Sound
Devices award-winning 744T Digital Audio Recorder. Peak limiters, high-pass
filters, and a 15 dB pad add overload protection. All analog-to-digital and
digital-to-analog conversion is performed by the USBPre 2 for superior audio
2 is a class-compliant audio device. This allows for simple plug-and-play
connection to computers running Mac OS, Windows, and Linux (see note to the
right on Class-Compliant Drivers). There are no drivers to install for the
USBPre 2 and there are no software-only features. All additional controls
and settings are available on back panel DIP switches. The USB port also
provides power to the unit, both when connected as an audio interface and
when used in Stand-Alone operation.
interconnect with sound systems big and small, the USBPre 2 includes
numerous output connection types, including balanced mic- or line-level on
XLR, unbalanced consumer line-level on RCA, S/PDIF coaxial (RCA) and optical
(Toslink). The outputs have their own, dedicated front-panel level control.
Use the balanced line-level signals to connect to powered loudspeakers. Use
the optical S/PDIF to connect to hi-fi systems. Use the coaxial S/PDIF
output in Stand-Alone mode for a portable microphone preamplifer with
digital output for any production application.
signal level metering is essential for any sound engineer. The USBPre 2
includes a 23-segment, multicolor LED meter for precise level indication.
The meter is switchable between input signal metering and output signal
metering. The meter indicates both VU and peak (PPM) ballistics.
The USBPre 2 can be
used in Stand-Alone mode where it operates as a high-quality, portable
microphone preamplifier and analog-to-digital converter. Digital signals
connected to the USBPre 2 are converted to analog and available at the
headphone, XLR, and RCA outputs. Stand-Alone operation requires the unit to
be connected to a USB power source. Stand-Alone mode is a great option when
an additional microphone preamplifer, A-D converter, or D-A converter is
Like all of Sound
Devices products, the USBPre 2 is designed to stand up to the most demanding
environments. Its extruded aluminum chassis and aluminum panels, machined
knobs, metal connectors, and laser-etched nomenclature are designed to hold
up to years of abuse.
bandwidth, low-noise microphone preamplifiers with 48 V phantom,
limiters, high-pass filters, and 15 dB pad.
greater than 114 dB (in 24-bit operation).
Flat 10 Hz to 40
kHz (@96 kHz SR) audio bandwidth with very low distortion
individually selectable between microphone, line, and aux level signals
(both channels selected simultaneously for S/PDIF connections).
23-segment, multicolor LED peak/VU meter, selectable between input and
headphone amplifier can drive a wide range of headphones.
on XLR connectors with dedicated level control can be used to drive
line- or mic-level inputs.
enables zero-delay monitoring of source audio, computer audio, or a mix
of both source and computer audio for multitrack recording or computer
Phono (RCA) jacks
connect Aux Output to external loudspeakers or preamplifiers.
Bus powering via
USB for convenient, single-cable connection to the computer.
mode the USBPre 2 operates as a microphone preamplifier and
loop-through for test & measurement to send computer audio directly back
to an input.
extruded aluminum chassis.
Mac OS X 10.4+,
WindowsXP/Vista/7, and Linux, class-compliant audio device.
features controlled by hardware DIP switches on the back panel; no
software-only features and no control panel.
As a class-compliant
audio device, the USBPre 2 is limited to a maximum data rate of 24-bit, 48
kHz in Windows, Linux, and Mac OS versions 10.4 to 10.5.7. Mac OS 10.5.8 and
higher support the audio class 2.0 device and can address the USBPre 2 up to
24-bit, 192 kHz.
To enable higher
sampling rates in Windows OS,
available Windows ASIO driver.