Software applications address the USBPre at the sample rate defined by the
USBPre hardware. Valid sample rates for recording with the USBPre are 32 kHz, 44.1 kHz, and 48 kHz.
From the factory, the USBPre is configured to record at
44.1 kHz. To select between various sample rates, the sample rate must be
set in the USBPre firmware (see Configuring
Record Sample Rates). Due to Apple Sound Manager limitations, bit depth is limited to 16-bits with
any Sound Manager hardware, including the USBPre. Some recording applications
may show many other "valid" sample rates or bit depths for the USBPre. These should not be
used and can cause choppy audio and/or system crashes.
Any sample rate from 5 to 55 kHz can be played back on the USBPre at 8 or 16 bits.