Help File
Windows driver v2.2
Macintosh driver v2.0

General

Windows OS

Mac OS

Audio Software Notes


 

USBPre Specifications

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)

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)
0.007% max. (PC AUDIO output, 0 dB FS output, 100k load)
0.05% max. (HEADPHONES output, 2 V rms output, 600 ohm load)

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)

Inputs:

 

Clip Level
(1% THD)

Sensitivity
(typical, for 0 dB FS)

Impedance

min. gain

max. gain

MIC
(15 dB pad out)

-12 dBu
(195 mV rms)

-10 dBu

–53 dBu

2k ohm
active-balanced

MIC
(15 dB pad in)

+4 dBu
( 1.2 Vrms)

+5 dBu

-38 dBu

2k ohm
active-balanced

LINE

+24 dBu
(12.3 V rms)

+24 dBu

+7 dBu

65k ohm
active- balanced

DI

+6 dBu
(1.5 V rms)

+ 8dBu

–9 dBu

10M ohm
unbalanced

TAPE

+8 dBu
(2.0 v rms)

+10 dBu

–7 dBu

110k ohm
unbalanced

 

Output Clipping Levels: (1% THD, Windows Mixer 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

Output Impedance:

PC AUDIO: 3.3k ohm
HEADPHONES: 20 ohms

A/D Converter:

24 bit resolution
104 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)

D/A Converter:

16 bit resolution
90 dB min. dynamic range, 24 and 16 bit mode (10 Hz - 22 kHz bandwidth, A weighted)

Sample Rates / Bit Depths:

Recording: 8, 16, 24 bits at 32, 44.1, 48 kHz
Playback: 8, 16, 24 bits at 5 to 55 kHz

Master Clock: (recording)

PLL generated, low jitter

Metering:

Input level at A/D converter
6 segments, 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 resistors, each mic input will supply 10 mA

Powering:

USB bus powered, 3 stage soft-start meets USB hot-plugging power requirements
5 V, 100 mA max current drawn during enumeration
5 V, 300 mA quiescent current from USB port
5 V, 500 mA max current from USB port

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 Accessories:

USB Cable
USBPre software CD-ROM
Rubber Feet

 

copyright 2001, Sound Devices, LLC
All Rights Reserved