Audioengine D1 Driver
Audioengine D1 Drivers
Audioengine D1 Asio Driver

The Audioengine D1 is a USB-powered DAC, which makes it truly portable, combined with a headphone amplifier, which makes it even more so. What's more, as well as accepting a signal through the USB input, it also offers the option of an optical connection, which also has the benefit of accepting content of up to 192kHz/24-bit, rather than the. Audioengine D1 Premium 24-bit DAC (digital to analogue converter) allows you to bypass your computer’s soundcard or headphone output and send audio through USB or optical. D1 will process digital audio at any bit depth up to 24 bits and any sample rate to 192kHz. Audioengine A2's would have a good clean treble as it's more of a tweeter size. You're going to miss lots of bass with them, so just like cel4145 said, it would be beneficial to incorporate a subwoofer to the set-up. D1 is pretty decent, however you could of gotten something better for that price. For sub $250, i could have gotten a used A2. A D1, hooked up to a computer and speakers Audioengine. Comparing the D1 with the Hifiman HM-101 USB DAC ($39) it was immediately clear that the D1 was more transparent.

post-13028802

Thread Starter

psychic717

New Head-Fier

psychic717

Hello.
I'm new to this forum but I would like to ask for your opinion on some questions I have.
I just bought a DAC (Audioengine D1) because I wanted to give the 'best' sound quality to my headphones (Sennheiser Game One), but my audio knowledge is limited so here I am.
Although everything seems to be working fine I have some questions I can't find answer to on Google.
The FAQ from Audioengine says:

Why do I lose system volume control when using the D1 with my computer?

Optical and USB outputs are all digital, so both Windows and Mac OS X will disable the system volume control when they are in use. You can still control the volume directly in iTunes (or any media player), with the front panel volume control on the D1, or with the volume control on your audio system.

Which is true if I use the USB connection, but I'm currently using the Optical cable as the input (for convenience purposes) and I still have the 'normal' Windows volume control.
EDIT: It seems the USB input also provides system volume control.
Is this normal?
Another question I have is if WASAPI is worth using over DirectSound.
I've been reading about how to use it on Media Player Classic and music players, but it's a bit complicated and it seems to produce crackling sounds when I start and stop the music track.
Is it really worth using WASAPI from a sound quality perspective?
I appreciate any input.
Thanks. Audioengine

DAC type
USB and Optical

Inputs
USB audio
SPDIF Optical

D/A converter
AKM4396

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USB transfer mode
Asynchronous dual clock

USB controller
TI1020B

USB device class
Type 1.1 or above

Input bit depth
16 bit, 24 bit

Input sample rate (USB)
32kHz-96kHz native playback
188.2kHz & 192kHz re-sampled to 96kHz

Input sample rate (optical)
32kHz-192kHz native playback

Outputs
Analog RCA L/R stereo
Analog 3.5mm mini-jack stereo

Full-scale output level
2.0V RMS

Output impedance
2 ohms

Audioengine D1 Driver

Recommended headphone impedance range
10 ohms to 600 ohms

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Headphone amplifier
OPA2134

Optical receiver
CS8416

Frequency response
10Hz-25KHz (+/- 0.5dB)

SNR
(DC to 20 kHz) >110dB

THD+N
(1kHz FS 96kS/s) <0.0025%

Crosstalk
-85db

Input bit depth
16 bit, 24 bit

Input sample rate (USB)
32kHz-96kHz native playback
188.2kHz & 192kHz re-sampled to 96kHz

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Input sample rate (optical)
32kHz-192kHz native playback

Audioengine D1 Drivers

Power requirement
USB 5V DC, 200mA

USB power filtering
2-stage redundant regulation

Product dimensions
3.5×3.75×1″ (89x95x25mm)

Shipping weight
1.0lbs (0.5kg)

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
USB cable, 2ft
Setup guide
Microfiber bag

D1 Internal Converter
The D1 uses the AK4396 DAC, which is well-regarded for its low noise and high fidelity. Due to the high signal-to-noise specs of the AK4396 and the added benefit of double redundancy power source conversion and filtering, the D1 presents impressive low noise and low distortion characteristics. The D1 can process digital audio at any bit depth up to 24-bits and any sample rate up to 192kHz.

D1 Headphone Amplifier
The D1 includes a headphone amp based on the TI OPA2134 low noise opamp. The high-performance headphone output was designed for a wide range of headphones and will satisfy even the most demanding headphone enthusiasts.

Audioengine D1 Asio Driver

D1 Power
The D1 is powered directly from the USB bus and power is passed through two stages of regulation to ensure no USB bus power variations affect the audio quality.

D1 Volume Control
Volume is controlled directly from the D1 front panel via the digitally-controlled analog potentiometer.