Art Project Series User Manual page 3

INTRODUCTION
The USB Pre IV is a high quality 4 input / 4 output 192kHz capa-
ble digital interface for connecting a computer to a stereo or PA
system. It provides up to 4 mic inputs or two high Z instrument
and two-line inputs or any combination of these.
The USB Pre IV converts its four inputs with a 32-bit ADC with
sample rates from 44.1kHz to 192kHz for computer input. It con-
verts USB audio using a 32-bit quad DAC to analog
audio.
Knobs on the front panel of the USB Pre IV allow quick, precise
control over the Input gain, Headphone and Output level. The
front panel switch allows control over Phantom power.
Output Channels 3&4 are sent out through the headphone out-
put jack. This audio can be mixed with the input audio for low
latency monitoring through the headphone output.
The Sample rate is set via the USB interface and its low latency
ASIO/WDM driver. The USB Pre IV is powered from the USB
bus (cable Supplied).
The built-in low noise +48 Volt phantom power supply allows you
to power up to 4 microphones as well as the preamplifier.
For monitoring, an 1/4-inch TRS headphone jack with level and
monitor mix controls on the front allow for latency free local mon-
itoring of the inputs while recording as well as playback monitor-
ing of the USB bus. All four inputs are summed to MONO for the
monitor function. This summation is accomplished before being
summed with CH3&4.
The anodized all aluminum case is rugged and will handle a mul-
titude of environments. The USB Pre IV will provide you with
years of trouble-free service and its high-quality audio channels
2