Audioengine D1 24-Bit DAC/Headphone Amplifier (90021970)

Inputs

USB audio           

SPDIF Optical     

D/A converter

AKM4396            

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

Recommended headphone impedance range

10 ohms to 10K ohms    

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

Input   sample rate (optical)

32kHz-192kHz native playback  

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.

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.