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Sound Devices USBPre
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| Sound Devices Two-Channel Microphone Interface for Computer Audio
Download USBPre User Manual
Sound Devices USBPre 1.5 is a complete, portable hardware interface for computer-based digital recording. Designed for USB-equipped Macintosh® OS 9, OS X, and Windows (98SE®, ME, 2000®, XP) computers, USBPre quickly and easily interfaces studio microphones, line-level sources, musical instruments, and consumer audio electronics with personal computers. Its high-quality, 24-bit audio inputs offer the most direct signal path into the computer. All analog-to-digital conversion is done outside of the computer, in the USBPre, for superior audio performance. S/PDIF coaxial I/O enables direct digital transfers into and out of the computer.
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USBPre has the flexibility to work with most Windows and Mac recording, streaming, and measurement software. Powered solely by the USB port from either notebook or desktop computers, no additional power source is required — the computer provides all power needed for operation. The durable construction and compact size of the USBPre allow no-compromise digital recording everywhere.
Features
- Dynamic range greater than 106 dB (in 24-bit operation)
- Flat 10 Hz to 22 kHz audio bandwidth
- Exceptionally low distortion characteristics
- Two inputs accept microphone, instrument, line, or tape level inputs
- Input type is selected per channel — allowing two different signal types simultaneously
- Phantom power (48 volt) for condenser microphones
- S/PDIF coaxial input and output
- Six-segment LED peak input meter
- High-power headphone monitor
- Mix control enables headphone monitoring of analog source audio, computer audio, or a mix of both source and computer audio
- Phono (RCA) jacks connect PC AUDIO output to external loudspeakers or preamplifiers
- Bus powering from the USB port eliminates external power sources and batteries
- High-strength extruded aluminum chassis
- Compact dimension (4.4 cm H x 18.5 cm W x 10.0 cm D)
- Mac® OS 9, Sound Manager compatible, OS X Core Audio, PowerPC or Intel-based Mac
- Windows 98®, ME®, 2000®, and XP® Wave audio and DirectSound compatible
- ASIO for both Mac OS 9 and Windows
Specification
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 PC audio out)
E.I.N.:
(mic inputs) -124 dBu min. (10 Hz - 22 kHz bandwidth, 150 ohm source, gain control at 50% or more, 15 dB pad out)
Output Impedance:
PC audio -3.3k ohms, headphones - 20 ohms
S/PDIF Digital:
24-bit maximum input, 20-bit maximumhardware output (limited to 16-bit output in Windows Me and OS 9 Sound Manager), sample rate and bit depth selected by recording software and operating system
Sample Rates / Bit Depths:
Recording: 8, 16, or 24-bit at 32, 44.1, 48 kHz,
Playback: 8, 16-bit at 5 to 55 kHz, will play back 24-bit sources at 16-bit
Master Clock:
(recording) PLL generated, low jitter
Metering:
input level at A/D converter, 6- segment, 30 dB total range, peak responding, 0 dB on meter = 0 dB FS (0 dB referenced to Full Scaled Digital)
Phantom Power:
48 V through 6.8k W resistors, each mic input will supply 10 mA
Powering:
USB bus powered, 3 stage soft-start meets USB hot-plugging power requirements, 5 V, 350 mA quiescent current from USB port, 5 V 500 mA max current from USB port
THD+N:
(10 Hz - 22 kHz measurement bandwidth) 0.05% max. (any input to PC recording, gain control at min., input driven to -6 dB FS) 0.009% max. (PC audio output, 0 dB FS output, 100k ohm load) 0.05% max. (headphone output, 2 V rms output, 600 ohm load)
Output Clipping Levels:
(1% THD, Windows mixer/Mac volume at max.) PC audio: +8 dBu (2.0 V rms) w/ 100k ohm load headphones: +11 dBu (2.75 V rms) w/ 600 ohm load
A/D Converter:
24-bit resolution - no dither added104 dB min. dynamic range, 24-bit mode (10 Hz - 22 kHz bandwidth, A-weighted) 96 dB min. dynamic range, 16-bit mode (10 Hz - 22 kHz bandwidth, A-weighted)
USB
Fully compliant USB 1.1 device
D/A Converter:
16-bit resolution, 90 dB min. dynamic range, 24 and 16-bit mode (10 Hz - 22 kHz bandwidth, A-weighted)
Dimensions:
(unpackaged):4.3 cm x 18 cm x 10 cm (H x W x D) 1.7 in. x 7.25 in. x 4.25 in.
Weight:
0.5 kg
1.13 lbs.
Certifications:
meets FCC Part 15 Class B, Complies with the requirements of European Directive 89/336/EEC
Included:
USB Cable, software installation CD-ROM for Mac OS (9 and X) and Windows OS, rubber feet
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