Inputs
USB-C/Optical (SPDIF)
Outputs
RCA/Mini Jack
D/A converter
ESS ES9018 DAC
Optical receiver
ESS9018
USB controller
CT7601CR
USB
USB Audio 2.0
Full-scale output
2.0V RMS
Output impedance
4.7 ohm
Power source
5V USB
Power requirements
110mA/5VDC
USB power filtering
SG2019
SNR
>105dB
THD+N
<0.0025% @ 1KHz
Crosstalk
-46dB
Frequency response
20-20KHz
Input bit depth
up to 32 bits
Input data rate
up to 394kHz
Product dimensions
90x74x22mm
Shipping weight
268x175x56mm
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
Setup guide
Microfiber bag
D1 DAC
The D1 uses the ESS ES9018 DAC, which is well regarded for its low noise and high fidelity. Due to the high signal-to-noise specs of the ES9018 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 32-bits and any sample rate up to 394kHz
D1 Headphone Amplifier
The D1 includes the ES9601C SABRE headphone driver amp with circuit protection and is designed for a wide range of headphones that will satisfy even the most critical listeners.
D1 Power
The D1 is powered directly from the USB input and passed through two stages of regulation to ensure no USB power variations affect the audio quality. Because of the efficiency of the D1, it can even be powered by a phone or tablet.
D1 Preamp
The audio line-out preamp connects to powered speaker systems, amplifiers, or other external decoders with an analog or optical output.
D1 Volume Control
Volume for headphones and line-out is controlled directly from the D1 front panel via the digitally-controlled analog potentiometer. Smoothly adjust volume levels at fine increments without any undesirable noise or channel imbalance at lower volumes.
