D2 24-bit Wireless DAC

$399

Stream HD to any music system.
Audioengine D2 Premium 24-bit Wireless DAC allows you to stream wireless HD audio from your computer to any music system, independent of your Wi-Fi network. D2 includes USB and optical inputs, a high-performance DAC, plus the isolation benefits of wireless. Setup is fast and simple, with no software to install and without the frustration of trying to connect to your network.
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Product Description


Game-Changing Computer Audio

The D2 offers audio fidelity and features of DACs costing several times more, but with one very important feature – it’s wireless! D2 is a simple to use yet powerful digital-to-analog converter with performance and features generally found in much more expensive DACs. The D2 processes digital audio at any bit depth up to 24 bits and sample rates to 192KHz, then sends your music over-the-air at 24/96. It accepts USB or PCM-stereo optical and will automatically configure to match either of these inputs.

Easy Setup and Simple Operation

Bypass your computer’s sound card or headphone jack and send wireless HD audio to any music system. D2 transmits all music file formats from any computer media player and can simultaneously transmit HD audio to up to 3 wireless receivers. The 100ft (30m) typical range, low latency, built-in DAC, and resistance to interference and dropouts makes D2 the best-sounding HD wireless system available.

Versatile

The D2 is actually three products in one – a high-quality USB wireless computer DAC, a wireless USB-to-SPDIF converter, and a wireless optical PCM-to-stereo link. The ability to stream HD audio wirelessly from your computer direct to your music system not only keeps your computer away from your audio gear, but also minimizes nagging problems such as ground loops, induced cable noise, and jitter. And if you already have a favorite DAC, the D2 can provide bit-perfect wireless USB-to-SPDIF conversion or serve as a wireless link for your PCM-stereo stream.

Join the Computer Audio Revolution

The D2 sends a 24bit/96KHz PCM stereo digital stream over-the-air in a “closed-system” Wi-Fi configuration. The system’s proprietary RF technology ensures data integrity with no impact on existing routers or networks. The volume control on the D2 Sender is transmitted over an entirely separate channel so there is no impact on the digital audio stream.

See and Hear the Difference

Audioengine designers, with their attention to audio quality as well as visual aesthetics, have created a feast for both the eyes and ears. The rounded anodized aluminum case of the D2 reflects traditional Audioengine design and the audio fidelity is typical of Audioengine’s commitment to great sound at an affordable price. The Audioengine D2 continues to close the gap between your computer music and home hi-fi and even if you’re not an audio enthusiast we guarantee your music will sound better!

★★★★★ Support

Need help getting started with your new D2? Here are some resources that will help.

 

30-day audition

Listen to D2 for 30 days. Love it, or return it for a full refund.*
*30-day trial is only available for product purchased directly online from the Audioengine store. Conditions apply. Learn more.

 

Features

Features

Wireless bit-perfect 24/96 digital-to-analog converter
USB-to-S/PDIF converter
Mac or PC plug-and-play, no drivers or network setup
Precision receiver re-clocking for low jitter
USB and optical inputs
Optical and analog outputs
Based on Burr-Brown PCM1792 DAC

Works with

Works with

Any computer (Mac or PC)
USB-to-SPDIF convertor (use with your favorite DAC)
Any TV or product with optical outputs

What’s in the Box (Sender)

What’s in the Box (Sender)

(1) D2 Sender
(1) Power supply
(1) Detachable power cord, 1.5m (~5ft)
(1) USB cable, 2ft (0.6m)
(1) Microfiber product bag

What’s in the Box (Receiver)

What’s in the Box (Receiver)

(1) D2 Receiver
(1) Power supply
(1) Detachable power cord, 1.5m (~5ft)
(1) RCA audio cable, 2m (~6.5ft)
(1) Microfiber product bag
(1) Setup Guide
(1) Product line brochure

General specifications

General specifications

DAC type
Dual Mode USB and Optical (SPDIF) wireless DAC

Inputs
USB/Optical (SPDIF)

Outputs
RCA Stereo/Optical (SPDIF)

D/A converter
PCM1792A

Optical receiver
AK4117

USB controller
TI1020B

Full-scale output
2.0V RMS

Output impedance
100 ohms

Power source
Sender: USB 5V or included external supply
Receiver: Included external supply

Power requirements
Sender: 270mA, 5V
Receiver: 300mA, 5V

USB power filtering
3-stage redundant regulation

SNR
(DC to 20 kHz) >115dB

THD+N
(1kHz FS 96kS/s) <0.0015% Crosstalk <-85db

Frequency response
10Hz-30KHz (+/- 0.5dB)

Input bit depth
24 bit (upsampled)

Input data rate
96kHz – native playback
44.1kHz, 48kHz, 188.2kHz, 192kHz – re-sampled to 96kHz for playback

USB device class
type 1.1 or above

Wireless range (typical)
>100ft

Latency
<20ms

Receivers supported
Up to 3

Product dimensions
4.75×5.5×1″

Shipping weight
4lbs (2.0kg)

Shipping box dimensions
15x9x5″

Environmental
Operating Temperature: 32 to 95 degrees F
Non-operating Temp: -4 to 113 degrees F
Relative Humidity: 5% to 95% non-condensing

Included accessories (D2 Sender)
USB cable, 2ft
Power adapter with detachable AC cord
Microfiber bag

Included accessories (D2 Receiver)
RCA cable, 6.5ft
Power adapter with detachable AC cord
Microfiber bag
Setup Guide

Advantages of wireless
The D2 wireless system transmits bit-perfect PCM-stereo simultaneously to up to 3 receivers. This PCM stream is routed from/to the various components of the system (optical transmitter/receiver, USB controller, and DAC) via the I2S bus, which maintains data integrity throughout the system. Because the various source/sink components are segregated by the wireless subsystem, various anomalies which plague many wired DACs such as jitter, grounding, and induced cable noise are greatly reduced. In addition, the D2 allows the user to physically isolate a potentially noisy computer from the sensitive audio components in your system.

D2 USB
The D2 utilizes the TI1020B USB controller chip, widely recognized as the industry standard for higher-end USB audio products. The Sender can be powered directly from the USB bus or from the included external power adapter. The USB power is passed through two stages of regulation to ensure high stability and low noise.

D2 DAC
The D2 Receiver utilizes the PCM1792 DAC, widely know for it’s low noise and high fidelity. Due to the PCM1792’s high signal-to-noise specs and the added benefit of triple redundancy power source conversion and filtering, the D2 presents impressive low noise and low distortion characteristics.

I2C Volume Control
The D2 incorporates a separate-path wireless channel to transmit volume information from the Sender volume control to the analog section of the Receiver. This means that the volume information never affects the digital audio stream.

D2 and LAN
The D2 system divides the band between 2405 MHz and 2477 MHz into 37 discrete, 2 MHz wide channels. Channels numbered 2 through 38 inclusive are used for system operation. The system scans the spectrum and selects two channels that are 18 channels (or 36 mHz) apart and transmits with 50% of the time on one channel (for example channel 2) and 50% on the other channel (for example channel 20). The system stays on these selected channels until the error detection rate reaches a pre-determined level indicating deteriorating RF conditions. The system will then select a cleaner channel for transmission and move there without any drop in audio. In this way the D2 not only maintains it’s own audio integrity, but co-exists nicely with other LAN devices.

Dagogo – D2 Review

“Regardless of source quality, I haven’t heard more quiet or lower distortion USB DAC.”
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Positive Feedback – D2 Award: Writers’ Choice Awards for 2012

“D2 is included in the 9th Annual Positive Feedback Online’s Writers’ Choice Awards for 2012 – The Best of the Best!”
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Tone Audio – D2 Review

“The Audioengine D2 DAC offers convenience and high performance in a compact package that is reasonably priced. Computer audiophiles take note.”
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Dagogo – D2 Review

“Regardless of source quality, I haven’t heard a quieter or lower distortion USB DAC.”
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AudioStream – D2 Review

“The wireless aspect of the D2 really isn’t an issue and that’s really good news.”
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Enjoy the Music – D2 Review

“The plug-and-play Audioengine D2 is fun to use, is super reliable, is affordable, and sounds great.”
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Computer Audiophile – D2 Review

“The Audioengine D2 is the wireless interface I prefer over all others for its sound quality, convenience, and software independence.”
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Positive Feedback – D2 Review

“Audioengine has delivered yet another excellent audio product at a very competitive price.”
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Ken Rockwell – D2 Performance Testing

“At any price, the Audioengine D2 is a great DAC. The D2 tests almost as well as if it’s a piece of laboratory equipment.”
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Soundstage – D2 Review

“The fact that it’s so affordably priced makes this game-changing DAC all that much easier to buy.”
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Audiophilia – D2 Review

“Many inexpensive digital devices sound effective out of the box, but fatigue after a marriage. Not the D2s. Buy with utmost confidence.”
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AudioHead – D2 Review

“For the individual who likes simplicity, this product has an edge over server-based streaming options.”
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Can I use the D2 with an Apple iPhone or iPad?
Yes! You will need an Apple USB camera adapter, and a self powered USB hub. We’ve tested this with the D-link DUB-H4 and DUB-H7, and it works well. Here’s an example of how this would be connected:

phone and tablet w/ USB Camera Adapter –USB-> Powered hub –USB-> D2 Sender –wireless-> D2 Receiver –RCA-> Speakers

I have the original Audioengine 5 (not the A5+), will the D1 / D2 DAC work with the inputs on that original model?
You can use Audioengine DACs with your original A5s, no problem. You would simply use a standard RCA cable and the RCA to mini-jack adapter that came with the A5 to connect the RCA output from the DAC in to one of the mini-jack inputs.

If the D2 DAC Sender is connected to my MacBook in another room do I have to go back to the computer to change songs?
The free Remote app for iTunes works nicely on an iPhone/iPad and there are plenty of free apps for non-iTunes based systems as well as Android-based apps.

Where can I download drivers for the D2?
The D2 is a USB Plug-and-Play audio device. This means that the drivers it uses are developed and provided by the developer of your computer’s operating system. In the case of a Windows PC for example, these drivers are provided by Microsoft, and are a part of Windows.

What is the best USB cable length to use with D2?
USB cable performance will vary with construction and length, however, for the best results we recommend using the shortest cable possible (2′ or less).

Can I connect the D2 Sender to a USB hub?
Although D2 may work just fine when connected to most USB hubs, this is not recommended as the data rate may not be fast enough for higher-resolution music. We therefore suggest you select a high-speed USB bus all by itself and don’t use a USB port on your keyboard, for example.

I’m hearing a crackling/popping sound when playing music. What am I doing wrong and how can I fix this?
When issues do crop up in USB audio, this is a common symptom. The PDF linked below outlines the issue and potential causes as well as some common fixes.

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Will the D2 work with USB 1.1?
Yes, however, note that 24/96 HD digital audio pushes the limits of USB 1.1 speeds. Due to this it’s highly recommended that you connect to a higher-speed USB 2.0 port.

How do I make sure that the D2 DAC is set to 24-bit/96KHz audio?
If using a Mac, open the Audio MIDI Setup utility in Applications->Utilities, choose “Audioengine D1” under audio devices and check that the format is set to 96 and the bit depth is set to 24bit.

I’m having trouble using my D2 with Foobar in WASAPI and KS mode. What do I do?
In the Foobar control panel, under Preferences->Output, set the buffer length to minimum. A few customers have mentioned that WASAPI mode is more stable when used under WinAmp, so try that as well.

Is there an easier way for Mac users to get to System Preferences and the Audio MIDI Setup control panels?
A customer recommended an app called Soundsource – http://rogueamoeba.com/freebies – which is an easy way to switch between audio input and outputs as well as to access System Preferences and the Audio MIDI control panels.

Is there a recommended “break-in period” for the D2?
Your D2 will sound great out of the box and will get better over time, however, it’s best to play music for 40 to 50 hours first before doing any critical listening.

Is the D2 USB isochronous or asynchronous?
The D2 uses “adaptive mode” in it’s USB receiver. This means that the USB receiver (Texas Instruments 1020B) will keep track of the data coming in from the computer and adjust so as not to miss any incoming data. Due to the nature of the wireless link, the data then becomes asynchronous before arriving at the Receiver. Thus the D2 acts as an asynchronous USB DAC with the added benefit of being 24/96 bit-perfect wireless.

Will the volume control on the D2 Sender affect my audio?
No. The volume information is transmitted via a completely separate I2C channel over the air and is used at the output of the internal DAC of the D2 Receiver. Will the D2 interfere with my other wireless devices? The D2 is designed to play well with most wireless devices, especially computers and routers. We do, however, recommend that you locate the D2 at least 12″ from other wireless products.

What can I do to further ensure that all my wireless devices work well together?
If you use a wireless 802.11g router, set the channel to either 1 or 11. If you have a 2.4G WLAN-N access point in your home, make sure it is set to 20MHz bandwidth and not 40MHz.

How many wireless “zones” can I set up with D2?
The D2 Sender can simultaneously broadcast to (3) D2 Receiver units. See the Pairing section in the D2 Setup Guide for pairing additional receivers.

Why does D2 have a digital optical but no coax interface?
We chose optical over coax inputs and outputs for D2 (and D1) primarily because TV’s, Apple TV, and computers all have optical outputs. Regarding optical vs. coax quality, there are various thoughts and theories on which is better but our experience is that as long as optical is implemented correctly and the connectors are high-quality, it is essentially the same digital SPDIF signal.

Can I use D2 to connect my computer wirelessly to another DAC in my audio system?
Absolutely! If you use the USB input of the D2 Sender, then connect the D2 Receiver optical output to your DAC and the D2 will act as a wireless 24-bit USB-to-SPDIF converter and stream high-resolution digital audio to your favorite DAC. You can also use the optical input on the D2, in which case the D2 will act as a wireless optical link to your DAC. Can I use a third-party (non-Audioengine) AC power adapter to power my D2 Sender and/or Receiver? The D2 AC power adapters have been specifically designed to provide stable low-noise power to the D2 so only use the included Audioengine power adapters. Using any other power adapter will compromise the audio quality and may damage your D2.

Can I take my D2 to another country with a different voltage?
Yes, D2 uses switching power supplies so they will automatically convert to the different voltage. The AC power cord is detachable which makes it convenient to replace the AC plug with a different type if you don’t want to use an adapter plug.

What is the AC power cord type for Audioengine D2?
We use 2-pin non-polarized IEC 320-C7 cables, which is common and can be purchased at most electronics stores.

How does D2 differ from the Audioengine W1 or W3 wireless adapters?
The D2 offers bit-perfect 24/96 transmission, while the W1 and W3 wireless are 16-bit adapters (16/44.1 and 16/48KHz).

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