Manual

USBPre 2 User Guide and Technical Information
22
Features and specifications are subject to change. Visit www.sounddevices.com for the latest documentation.
Specifi cations
Frequency Response
(reference 1 kHz tone.
192 kHz sample rate)
Any input to PC recording:
10 Hz - 40 kHz, +/- 0.5 dB•
-3 dB at 65 kHz•
PC source to AUX or XLR output:
10 Hz - 40 kHz, +/- 0.5 dB•
-3 dB at 65 kHz•
THD+N
(22 Hz - 22 kHz measurement band-
width)
0.05% max (any input to PC recording, gain control at min, input driven to -6 dBFS)•
0.009% max (AUX output, 0 dB V output, 100k ohm load)•
0.05% max (HEADPHONES output, 2 V rms output, 600 ohm load)•
E.I.N.
(MIC inputs)
-127 dBu min (22 Hz - 22 kHz bandwidth, 150 ohm source, gain control fully clock-•
wise, 15 dB pad out)
Input Clipping Level
(1% THD)
Mic: -10 dBu (0.25 V RMS)•
Mic (15 dB pad): +4 dBu (0.78 V RMS)•
Line: +28 dBu (19.45 V rms)•
Aux: +9 dBu (2.18 V rms)•
Input Sensitivity
(typical, for 0 dBFS)
Mic: -10 dBu min, -60 dBu max•
Mic (15 dB pad): +4 dBu min, -45 dBu •
max
Line: +29 dBu min, +10 dBu max•
Aux: +12 dBu min, -7 dBu max.•
Input Impedance
(actual)
Mic: 4k ohm, active-balanced• Line: 60k ohm, active-balanced•
Aux: 80k ohm•
Input Limiter Threshold
Mic: -4 dBFS•
Low Cut
Mic: -3 dB at 80 Hz. 12 dB per octave•
Output Clipping Level
(1% THD, PC-controlled output levels
at max)
Balanced XLR: +18 dBu with 100k ohm •
load
Aux: +8 dBu (2.0 V rms) with 100k ohm •
load
Headphones: +11 dBu (2.75 V rms) with •
600 ohm load
Output Impedance
Balanced XLR (Line level): 500 ohms•
Balanced XLR (Mic level): 5 ohms•
Aux: 660 ohms•
S/PDIF Digital
24 or 16 bit input•
A/D Converter
24-bit resolution. 114 dB typical dynamic range (22 Hz - 22 kHz bandwidth, A-weight-•
ed)
D/A Converter
24-bit resolution. 112 dB typical dynamic range (22 Hz - 22 kHz bandwidth, A-weight-•
ed)
Analog Gain
Mic: 80 dB max•
Mic (15 dB pad): 65 dB max•
Line: 30 dB max•
Aux: 13 dB max•
Sample Rates / Bit Depths
Recording: 8, 16, or 24-bit at 8, 16, 32, •
44.1, 48, 96, or 192 kHz
Playback: 24-bit at 8, 16, 32, 44.1, 48, •
96, or 192 kHz
Master Clock
Crystal based, low jitter•
Metering
2 x 23 segments, 44 dB total range, peak ballistics. 0 dB on meter = 0 dBFS (0 dB •
referenced to full scale digital)
Phantom Power
48 V through 6.8k ohm resistors. Each mic input will supply 10 mA•
Powering
USB bus powered. 5 V (+/- 10%), 500 mA max current from USB port (USBPre 2 will •
not function if connected through a passive USB connection or hub)
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. (H x W x D)•
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 Accessories
USB Cable• Rubber Feet•