Power
Mains voltage: 100…120 V or 200…240 V, automatic voltage selection
Fuse rating: 500 mA slow blow at 100…120 V, 250 mA slow blow at 200…240 V
Power consumption: 25 VA max.
Power consumption in standby: 2.2 VA max.

Size DAC501
Depth: 30 cm
Width: 18,8 cm
Height: 6,6 cm
Height with feet: 7,2 cm

Size DAC502
Depth: 30 cm
Width: 45 cm
Height: 6,6 cm
Height including feet: 7,4 cm

Size Remote
Depth: 2,1 cm
Width: 4,5 cm
Height: 16,6 cm

Available Color
Silver, Black

Digital Inputs
(1) XLR connector
(1) RCA connector
(1) TOSLINK connector (optical)
(1) USB type B connector

(1) RJ45 Ethernet connector
All inputs accept professional or consumer standard , i.e. accept AES/EBU or S/PDIF signals
. Sampling frequencies: 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz or 192 kHz on any of the inputs. USB and Ethernet also support 352.8 kHz, 384 kHz, DSD64 and DSD128
Maximum input word-length: 24 / 32 Bits

Digital Outputs
none

Analog Outputs
(2) XLR connectors (hot on pin 2), short circuit proof output circuitry, DC coupled, low output impedance
(2) RCA connectors, short circuit proof output circuitry, DC coupled, low output impedance

(1) 6.3mm Jack socket for headphones, DC coupled, low output impedance

At the DAC502 only: (1) 4 pin XLR socket for headphones, DC coupled, low output impedance

The output level is selectable via the LCD menu or the web interface; four settings are provided as shown below:

XLR Output with a 0 dBFS sine wave input:
0 dB setting: 6.8 Vrms +18.9 dBu
-10 dB setting: 
2.2 Vrms +8.9 dBu
-20 dB setting: 0.68 Vrms -1.1 dBu
-30 dB setting: 0.22 Vrms -11.1 dBu

These levels are achieved with a 0.0 dB setting for the level control on the LCD screen.

Suggested subsequent amplifier input impedances:
0 dB setting: 900 Ω or higher
-10 dB setting: 100 Ω or higher
-20 dB setting: 60 Ω or higher
-30 dB setting: 60 Ω or higher

RCA Output with a 0 dBFS sine wave input:
0 dB setting: 3.4 Vrms +12.9 dBu
-10 dB setting: 
1.1 Vrms +2.9 dBu
-20 dB setting: 0.34 Vrms -7.1 dBu
-30 dB setting: 0.11 Vrms -17.1 dBu

These levels are achieved with a 0.0 dB setting for the level control on the LCD screen.

Suggested subsequent amplifier input impedances:
0 dB setting: 450 Ω or higher
-10 dB setting: 50 Ω or higher
-20 dB setting: 30 Ω or higher
-30 dB setting: 30 Ω or higher

Headphone Output:
(1) stereo 1/4-inch jack connector, DC coupled. The output level is selectable via the LCD menu; four level settings are provided as shown below:

Headphone output with a 0 dBFS sine wave input:
0 dB setting: 6.8 Vrms +18.9 dBu
-10 dB setting: 
2.2 Vrms +8.9 dBu
-20 dB setting: 0.68 Vrms -1.1 dBu
-30 dB setting: 0.22 Vrms -11.1 dBu

These levels are achieved with a 0.0 dB setting for the level control on the LCD screen.

Suggested headphone impedances:
0 dB setting: 200 Ω or higher
-10 dB setting: 30 Ω or higher
-20 dB setting: 10 Ω or higher
-30 dB setting: 4 Ω or higher

The same parameters apply to the 4 pin headphone output of the DAC502 as well.

Synchronization
Via the input signal in case of the AES/EBU and S/PDIF inputs. Via the internal oscillator in the case of USB and Ethernet inputs

D/A Converter chip
Over-sampling multi-bit sigma-delta converter
Two converters per audio channel

Measurements Main Output
The measurements below have been taken at the following conditions (unless noted otherwise): 1 kHz measurement frequency, maximum selectable output level, 192 kHz sampling frequency (Fs), 22 kHz measurement bandwidth, unweighted, 0 dBr equals the output level at 0 dBFS input.

Frequency Response:
Fs = 44.1 kHz, 0 Hz…20 kHz: within ±0.25 dB
Fs = 88.2 kHz, 0 Hz…20 kHz: within ±0.25 dB
Fs = 88.2 kHz, 0 Hz…40 kHz: within ±0.8 dB
Fs = 176.4 kHz, 0 Hz…20 kHz: within ±0.25 dB
Fs = 176.4 kHz, 0 Hz…40 kHz: within ±0.8 dB
Fs = 176.4 kHz, 0 Hz…80 kHz: within ±2.5 dB

Total Harmonic Distortion plus Noise (THD+N):
-111 dBr (0.0003 %) at −3 dBFS input level
-125 dBr (0.000056 %) at −40 dBFS input level
-125 dBr (0.000056 %) at −70 dBFS input level

Linearity:
At 0 dBFS to −120 dBFS input level: less than ±0.2 dB deviation from ideal

Spurious components (including harmonics):
At 0 dBFS input level, maximum output level, 1 kHz, all components at less than −110 dB
At 0 dBFS input level, maximum output level, 4 kHz, all components at less than −110 dB

Crosstalk:
Better than 110 dB, 20 Hz…20 kHz

Interchannel Phase Response:
±0.3° 20 Hz…20 kHz
±0.6° 20 Hz…80 kHz

Measurements Headphone Output
The measurements below have been taken at the following conditions (unless noted otherwise): 1 kHz measurement frequency, maximum selectable output level, 192 kHz sampling frequency (Fs), 22 kHz measurement bandwidth, unweighted, 0 dBr equals the output level at 0 dBFS input.

Frequency Response:
Fs = 44.1kHz, 0 Hz…20 kHz: within ±0.25 dB
Fs = 88.2kHz, 0 Hz…20 kHz: within ±0.25 dB
Fs = 88.2kHz, 0 Hz…40 kHz: within ±0.8 dB
Fs = 176.4 kHz, 0 Hz…20 kHz: within ±0.25 dB
Fs = 176.4 kHz, 0 Hz…40 kHz: within ±0.8 dB
Fs = 176.4 kHz, 0 Hz…80 kHz: within ±2.5 dB

Total Harmonic Distortion plus Noise (THD+N):
−112 dBr (0.00025 %) at −3 dBFS input level
−121 dBr (0.000089 %) at −40 dBFS input level
−121 dBr (0.000089 %) at −70 dBFS input level

Linearity:
At 0 dBFS to −120 dBFS input level: less than ±0.4 dB deviation from ideal

Spurious Components (including Harmonics):
At 0 dBFS input level, maximum output level, 100 kΩ load, 1 kHz, all components at less than −110 dB
At 0 dBFS input level, maximum output level, 600 Ω load, 1 kHz, all components at less than −110 dB
At 0 dBFS input level, maximum output level, 300 Ω load, 1 kHz, all components at less than −110 dB
At 0 dBFS input level, maximum output level, 100 kΩ load, 4 kHz, all components at less than −110 dB
At 0 dBFS input level, maximum output level, 600 Ω load, 4 kHz, all components at less than −110 dB
At 0 dBFS input level, maximum output level, 300 Ω load, 4 kHz, all components at less than −110 dB

Crosstalk:
Better than 105 dB, 20 Hz…20 kHz

Interchannel Phase Response:
±0.2° 20 Hz…20 kHz
±0.5° 20 Hz…80 kHz