User Manual

D1 setup guide

Features

• Desktop or portable digital-to-analog convertor

• Mac or PC plug-and-play, no drivers to install

• High-performance headphone amp included

• USB and optical inputs

• USB-powered

• Stream bit-perfect 24/96 HD audio with low jitter

• Based on high-performance AK4396 DAC

Overview

The D1 24-bit DAC is a simple

yet powerful digital-to-analog

converter, with performance

and features usually found only

in much more expensive DACs.

It can accept USB or PCM-

stream optical inputs, and will

automatically congure to match

the inputs you deliver, with the

optical input being dominant.

The D1 can process digital audio at any bit depth up to 24 bits, and

any sample rate up to 192KHz. The D1 USB input can accept a USB

audio stream from your computer or other USB source device. The D1

optical input can accept optical (PCM stereo) streams from any optical

(TOSLINK) source, such as TVs, Apple TV®, DVD/BluRay players, CD

players, etc.

Note: optical sources must be set to PCM Stereo.

The D1 output can be connected to any gear with an analog audio

input, such as powered speakers, a boombox, stereo system, etc.

Power for the D1 is provided via the USB bus.

Note: when using the D1 with the optical output of your computer, the

USB port on the computer can provide power. The D1 will sense that

an optical input is present, and give that input priority.

USB power is “double regulated” to ensure that no USB bus power

variations aect your output.

The D1 also contains a high-performance headphone amplier.

Note: When headphones are plugged in, the analog output will be

muted.

Output Level

Power Headphone

Left

Right

Optical Input

USB Input

Analog Output

DAC/Headphone Amp