Introduction; Features - ESI U22 XT User Manual

ESI

1. Introduction

U22 XT offers a maximum of flexibility as fully bus powered USB device with pristine
professional 24-bit audio quality.
It features 2 analog input and 2 analog output channels with RCA connection, a microphone
preamplifier with XLR input and support for +48V phantom power, a Hi-Z instrument input for
guitars, a high quality headphone output and TRS line outputs. Master and headphone volume as
well as monitoring are controlled on the front panel.
On the software side, U22 XT provides low latency drivers with support for WDM, ASIO 2.0 and
CoreAudio based on our EWDM and DirectWIRE technology. If you're looking for a really
powerful USB audio solution for your PC or Mac to start working out of the box, then U22 XT is
for you!

1.1 Features

The U22 XT hardware has these main features:
1. Microphone input with XLR/TRS combo connector, use this connector to connect a dynamic
or condenser microphone.
2. Microphone input gain knob, controls the input volume of the microphone preamplifier.
3. 48V switch, use this switch to enable phantom power for condenser microphones.
4. Mic/HiZ input selection switch, allows you to select the input signal: the microphone input
(Mic), the instrument/guitar input (Hi-Z) or both. When the switch is in the middle position and
both is selected, the microphone input signal will be recorded on the left input channel and the
instrument signal on the right input channel.
4
U22 XT