USBPre 2 Specifications

Frequency Response (reference 1 kHz, at 96 kHz Sample Rate)
- 10 Hz – 40 kHz, ± 0.5 dB (any input to PC recording)
- 10 Hz – 40 kHz, ± 0.5 dB (PC source to AUX output)
THD+N (22 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 (AUX output, 0 dB V output, 100 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 clockwise, 15 dB pad out)
Input Clipping Level (1% THD)
- Mic: -10 dBu
- Mic (15 dB pad): +4 dBu
- Line: +28 dBu (19.45 V rms)
- Aux: +9 dBu (2.18 V rms)
Input Sensitivity (typical, for 0 dB FS)
- 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.
Input Impedance (actual)
- Mic: 4k ohm, active-balanced
- Mic (15 dB pad): 4k ohm, active-balanced
- Line: 60k ohm, active-balanced
- Aux: 80k ohm, active-balanced
Input Limiter Threshold
- Mic: -4 dBFS
Low Cut
- Mic: 80 Hz, -3 dB, 12 dB per octave
Phantom Power
- 48 V through 6.8k ohm resistors. Each mic input will supply 10 mA

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
- Headphone (Actual): 22 ohms
- Balanced XLR (Line level): 500 ohms
- Balanced XLR (Mic level): 5 ohms
- Aux: 2k 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-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
- Playback: 24-bit at 8, 16, 32, 44.1, 48, 96, or 192 kHz
Master Clock
- Crystal based, low jitter, asynchronous USB mode

48 segments, 44 dB total range, peak ballistics. 0 dB on meter = 0 dB FS (0 dB referenced to full scale digital)

USB bus powered, soft-start meets USB hot-plugging power requirements (5 V, 100 mA max current drawn during enumeration)
5 V, 500 mA max current from USB port (USBPre 2 will not function if connected through a passive USB connection or hub)