Audioengine Portable Headphone Amplifier and DAC

Input

USB audio           

D/A converter

ESS ES9281A PRO            

USB transfer mode

Asynchronous dual clock              

USB controller

TI1020B               

USB device class

Type 1.1 or above           

Input bit depth

32 bit    

Input sample rate

44.1kHz-96kHz native playback 

188.2kHz & 192kHz re-sampled to 96kHz

Output

Analog 3.5mm mini-jack stereo

Full-scale output level   

2.0V RMS            

Output impedance

2 ohms

Recommended headphone impedance range

12 ohms to 10K ohms    

Headphone amplifier

LME49726           

Frequency response

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

SNR

>116dB

THD+N

(1kHz FS 96kS/s) <0.002%            

Crosstalk

-110dB 

Power requirement

USB 5V DC, 200mA          

USB power filtering

2-stage redundant regulation    

Product dimensions 

1.9” (48mm) ×0.6” (15mm) ×0.375″ (10MM)       

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

Lightning to USB-C and USB-C cables