Unika DI-USB User Manual

DI-USB

Index

USER GUIDE

01 Overview

02 Features

03 Audio Connection

05 USB connection

06 Instrument direct input & Parallel

Link connection

06 Eliminating hum and buzz

07 Using the headphone output

08 Specications

6F, No.168, Xin-Hu 2nd Rd.
Nei-Hu District, Taipei City. 11494.
Taiwan, Republic of China.

[phone]

[phone]

　　[e-mail]

Unika Electronic Co., Ltd.

www.unika.com.tw

Box Series

Made in Taiwan

UNiKA DI-USB User Guide

1

OVERVIEW

The Unika DI-USB is a high-resolution stereo direct box designed to convert

sound les from a laptop computer, it is a fully USB 2.0 compliant, 24bit digital

to analog audio converter and also a direct input that lets you interface a high

impedance (Hi-Z) audio output with professional low impedance (Low-Z) PA

and recording systems.

In the case of the DI-USB Box, the digital audio signal is converted to analog

and feeds directly into the direct box circuit to produce Low-Z balanced left

and right stereo signals.

The built in preamp allows you to adjust the output level from mic-level to

line-level and enables the DI-USB Box to connect directly to mixing consoles,

power ampliers and self-powered speakers alike. The DI-USB Box ensures

the digital signal is delivered to the PA as faithfully as possible.

We recommend that you read carefully through the manual in order to famil-

iarize yourself with the DI-USB Box features so you can get the most out of it.

[e-mail]

If you still need further clarification, please send email to us and we will

do our very best to reply in short order.

UNiKA DI-USB User Guide

2

The DI-USB is a high-resolution stereo digital audio converter (DAC) and
direct box that is designed to connect to any computer system to seamlessly
transfer digital audio to analog.

A professional Hi-Z direct input is also equipped, this is most commonly
used with guitar pickups or keyboards, it also can be fed either from a line­level output from the head (pad set to -20dB) or from the amplifier power
output. A stereo pair of balanced XLR audio outputs with adjustable level
control then feeds the signal to a microphone preamplifier, PA system,
mixing console or even a powered speaker!

Made for plug and play simplicity, the DI-USB will automatically be listed
as an available sound card in the audio settings in all popular operating
systems,including Windows 7/8, Windows 10 and Mac OSX.

Connection to a computer is accomplished through a standard USB type-B
port. Digital-to-analog conversion can be monitored on headphones
through the 3.5mm analog output jack to check signal quality and level
before connecting to a sound system. Two isolated output transformers are
equipped to eliminate any hum or buzz caused by ground loops. To further
reduce susceptibility to noise, this is augmented with a ground lift switch
that lifts pin-1 on both XLR jacks.

FEATURES

• Stereo USB Laptop Direct Box.

• High impedance direct input for electronic musical instrument signal feed.

• High performance 24bit digital audio converter.

• Ready to use without the need of a driver.

• Standard USB type-B port for connection to computer.

• 3.5mm analog headphone output to check signal.

• Level control for outputs and headphone.

• The direct input signal will be mixed to the USB stereo signal at the output stage.

• A Mono-Sum switch to mix the left and right channel signals to form a
monaural signal in both output channel.

• Selectable 3 steps attenuator for Hi-Z direct input.

• Accept power from 9V battery, +20V to +48V phantom power or 5V from USB.

• 2 channel XLR Balanced Low-Z output with isolation transformer.

UNiKA DI-USB User Guide

3

AUDIO CONNECTION

Audio connection of the UNIKA DI-USB Box

DI Input

USB Input

Link Output

Headphone Output

Stereo Outputs

⑧ ⑨

⑩ ⑪

⑫

⑬

① ② ③ ④ ⑤

⑥ ⑦