For sale is the Audioengine D1 24-Bit DAC with USB and optical inputs and phono and headphone outputs. This is a great way to elevate your PC listening experience.

As well as accepting a signal through the USB input, it also offers has an optical input which has the benefit of accepting content of up to 192kHz/24-bit, rather than the USB connection's 92kHz/24-bit limitation.

Great chance to get your hands on this iconic, critically acclaimed and well loved little DAC. 

A couple of things to note:

• This is the USB-A version of the D1.
• There was some degredation of the matte finish of the face plate causing tackiness. I got in contact with Audioengine and they ackonolewdged this as a known issue and recommended removal of the coating. This is what I have done, and so the face plate has a slight sheen to it now which is only really noticable in the light. I have tried my best to capture in the images - it's purely cosmetic though. 
• Powered via 5V USB input (even if using optical)

Included

• D1
• High-qaulity USB cable
• Original felt bag

Tech Specs

DAC type	USB and Optical
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 sample rate (optical)	32kHz-192kHz native playback
Outputs	Analogue RCA L/R stereo Analogue 3.5mm mini-jack stereo
Full-scale output level	2.0V RMS
Output impedance	2 ohms
Recommended headphone impedance range	10 ohms to 600 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)