DI-USB
The Unika DI-USB is a high-resolution stereo direct box designed to convert sound files 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 amplifiers and self-powered speakers alike. The DI-USB Box ensures the digital signal is delivered to the PA as faithfully as possible.
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.
．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.
．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 .
| DI-USB | |||
|---|---|---|---|
| USB Compliance | USB 2.0 full speed, type B connector | ||
| Bit Depth | 24bit / 16bit | ||
| Sampling Rate | 44.1KHz / 48KHz auto sensing | ||
| Sound File Compatibility | WDM, MME, Core-Audio, ASIO and DirectSound | ||
| Software Compatibility | Vista/Win7/Win8/Win10 and Mac OSX | ||
| Frequency Response | 20Hz to 20KHz，+1/-1 dB | ||
| Dynamic Range | >90dB | ||
| Noise Floor | <-90dBu, unweighted 20Hz to 20KHz. | ||
| Maximum Output | +9dBu. | ||
| Total Harmonic Distortion | Less than 0.008% at 1KHz, 0dBu output | ||
| Hi-Z Direct Input | Unbalanced, XLR/¼”TRS combo jack. (Pin-2 Hot, Pin-3&1 Ground). |
||
| Link Output | Unbalanced, Parallel link output ¼”TRS jack for feeding to other equipment. |
||
| Direct Input Attenuator | At 0dB | At -20dB | At -40dB |
| Direct Input Impedance | 1 MΩ | 47KΩ | 47KΩ |
| Max. input level before Clip | +9dBu | +29dBu | +49dBu |
| Output Impedance | 200Ω nominal, Transformer Balanced. | ||
| Analog output | Balanced transformer isolated (XLR-M, Pin-1 Ground, Pin-2 Hot, Pin-3 Cold) |
||
| Headphone output | 3.5mm TRS, (Tip-Left Ch. Ring-Right Ch., Sleeve-Ground) |
||
| Level control | Variable, works on headphone and XLR outputs | ||
| Ground lift | Lifts pin-1 on both XLR outputs | ||
| DC Power | derives power from USB, plug-in 9V battery or +20V to +48V Phantom power |
||
| Finish | Durable powder coat | ||
| Size (H×W×D) | 158 x 112 x 46 mm | ||
| Weight | 1.2Kg, 2.6lbs. | ||
| Construction | 14 gauge steel cabinet & chassis | ||
