NAGRA HD DAC X
The HD DAC X is a step forward from the world-acclaimed Nagra HD DAC. It includes many of the technological advances from the HD PREAMP.
The result is a lifelike sound with warmth and transparency, extreme dynamics and extended frequency response beyond what has ever been achieved by other D/A converters.
The power supply is extremely sophisticated, using ultra-fast silicon carbide rectifier diodes, ultra-low-noise voltage regulators, and a virtual battery made up of a supercapacitor bank three times larger than the one in the HD Preamp. The new HD DAC X includes no fewer than 37 regulated ultra-low-noise individual power supplies. The HD DAC X features AES-EBU, S/P-DIF on both RCA and BNC and 2x Nagra Link single-mode ST-1 optical inputs to receive future Nagra high resolution sources. The USB input uses a proprietary software designed around an 8-core X-Mos chip.
Ultra-high precision and ultra-low jitter clocks are used in this new Nagra HD DAC X. A high-performance FPGA performs all internal calculations. Every input signal is converted into DSD 256 format (11.2 MHz sample rate).
The main digital power supply has a noise level 30 times lower than the HD DAC, itself already using very low-noise circuits. The order of magnitude of the noise of these new power supplies is 0.4 to 0.8 µV rms (from 10 Hz to 100 kHz). The digital part alone uses 16 ultra-low-noise power supplies. The digital input and D/A board is built on an 8-layer, high-precision PCB.
ELECTRONICS
- Digital inputs: 1x AES/EBU, 2x S/PDIF, 2x NAGRA-LINK, 1x Optical, 1x Audio USB (UCA2)
- Analog outputs: 1 stereo RCA, 1 stereo XLR
- Output level: 1.5 VRMS
- Output impedance: < 200 ohms
- Analog output Noise level: -128 dBr @ 1 kHz 1.5 V Unweighted
- Distortion: < 0.02 % @ -20 dBfs, < 0.005 % (H2 filtered) @ -3 dBfs
- Frequency Response: 5 Hz – 40 kHz +0 / -1 dB
- Crosstalk: > 110 dB @ 1 kHz, > 100 dB @ 20 kHz
- Inter-channel phase < 0.05 ° @ 1 kHz, < 0.3 ° @ 20 kHz, < 0.5 ° @ 50 kHz
- Remote automation: Input 1x 3.5mm (1/8”) stereo jack socket – Input command, Output 4x 3.5mm (1/8”) stereo jack socket – Output switching by relay
- Home automation: 1x SUB-D9 connector – RS232 115200 bits/s, 8 data bits, no parity, 1 stop bit
- Mains power: 100V~, 115V~, 120V~, 127V~, 230V~ or 240V~, NOT ADJUSTABLE – ±10%, 50-60Hz
- Power consumption: 170W max
- Mains fuse: S230V~ to 240V~ -> T 2A L (FST 5x20mm 250V), 100V~ to 127V~ -> T 3.15A L (FST 5x20mm 250V)
- Operating temperature: +15°C to +35°C (+59°F to +95°F) – moderate climate
- Operating environment: Indoor only – IP30
- Dimensions: Power supply chassis (HD PSU) 433x436x121 mm (17.05×17.17×4.76 in), Audio device chassis 433x436x121 mm (17.05×17.17×4.76 in)
- Weight: Power supply chassis (HD PSU) 16.5 kg (36.38 lb), Audio device chassis 13.5 kg (29.77 lb)
