- 20 May 2009
- 5,856
NAD M51 Direct Digital DAC
35-bit 844kHz DAC and Digital Preamp
Επίσημη Σελίδα Προϊόντος
Ενδεικτικό review από Stereophile.
Specs:
Description:
Remote-controlled digital-to-analog converter.
Digital inputs:
AES/EBU (XLR)
S/PDIF coaxial & optical
2 HDMI (stereo only)
USB 2.0
All support up to 24-bit/192kHz
Digital output:
HDMI.
Analog outputs:
left & right RCA (unbalanced)
left & right XLR (balanced)
Output impedance:
47 ohms (unbalanced)
110 ohms (balanced)
Output level:
2V RMS
Frequency response:
±0.5dB (ref. 20Hz-96kHz at 192kHz sample rate)
Signal/noise:
>125dB (ref. 0dBFS 2V out)
Channel separation:
>115dB (ref. 0dBFS volume β1dB)
AC supply:
100-240V, 50-60Hz
Power requirement:
16W
Dimensions:
17" (435mm) W by 3" (78mm) H by 11.5" (296mm) D
Weight:
12.8 lbs (5.8kg)
Το βασικό χαρακτηριστικό του εν λόγω μηχανακίου είναι το παρακάτω (quote από NAD):
Μετρήσεις (απο το Stereophile)
Impulse Response (4ms time window)
Frequency Response at –12dBFS into 100k ohms with data sampled at: 44.1kHz (left channel cyan, right magenta), 96kHz (left blue, right green), 192kHz (left gray, right red) (0.5dB/vertical div.)
1/3-Octave Spectrum with noise and spuriae of dithered 1kHz tone at –90dBFS, with: 16-bit data (top), 24-bit data (middle), dithered 1kHz tone at –120dBFS with 24-bit data (bottom) (right channel dashed)
FFT-Derived Spectrum with noise and spuriae of dithered 1kHz tone at –90dBFS, with: 16-bit data (left channel cyan, right magenta), 24-bit data (left blue, right red)
FFT-Derived Spectrum with noise and spuriae of dithered 1kHz tone at –90dBFS, with 24-bit data vis USB (left blue, right red)
Waveform of Undithered 1kHz sinewave at –90.31dBFS, 16-bit data (left channel blue, right red)
Waveform of undithered 1kHz sinewave at –90.31dBFS, 24-bit data (left channel blue, right red)
High-Resolution Jitter Spectrum of analog output signal, 11.025kHz at –6dBFS, sampled at 44.1kHz with LSB toggled at 229Hz: 16-bit data via TosLink from AP SYS2722 (left channel blue, right magenta), 24-bit data (left cyan, right red). Center frequency of trace, 11.025kHz; frequency range, ±3.5kHz
Σχόλιο για τις μετρήσεις του από το Stereophile: "NAD's M51 Direct Digital DAC offers measured performance that is almost beyond reproach. Color me impressed. —John Atkinson"
Ιδέα για να γράψω μια παρουσιασούλα του M51 ήταν ένα post του Chris1987, το οποίο δεν θυμάμαι κάν που και πότε αναφέρθηκε.
Έχει κανείς εμπειρία από το εν λόγω μηχανάκι?
DrPanK, μπας και έχεις ρίξει κανά ώτο ?
Τί σας λέει γενικώς το NADάκι?
Α, μην ξεχάσω: Price: $2000
:ernaehrung004:
35-bit 844kHz DAC and Digital Preamp
Επίσημη Σελίδα Προϊόντος
Ενδεικτικό review από Stereophile.
Specs:
Description:
Remote-controlled digital-to-analog converter.
Digital inputs:
AES/EBU (XLR)
S/PDIF coaxial & optical
2 HDMI (stereo only)
USB 2.0
All support up to 24-bit/192kHz
Digital output:
HDMI.
Analog outputs:
left & right RCA (unbalanced)
left & right XLR (balanced)
Output impedance:
47 ohms (unbalanced)
110 ohms (balanced)
Output level:
2V RMS
Frequency response:
±0.5dB (ref. 20Hz-96kHz at 192kHz sample rate)
Signal/noise:
>125dB (ref. 0dBFS 2V out)
Channel separation:
>115dB (ref. 0dBFS volume β1dB)
AC supply:
100-240V, 50-60Hz
Power requirement:
16W
Dimensions:
17" (435mm) W by 3" (78mm) H by 11.5" (296mm) D
Weight:
12.8 lbs (5.8kg)
Το βασικό χαρακτηριστικό του εν λόγω μηχανακίου είναι το παρακάτω (quote από NAD):
Μετρήσεις (απο το Stereophile)
Impulse Response (4ms time window)
Frequency Response at –12dBFS into 100k ohms with data sampled at: 44.1kHz (left channel cyan, right magenta), 96kHz (left blue, right green), 192kHz (left gray, right red) (0.5dB/vertical div.)
1/3-Octave Spectrum with noise and spuriae of dithered 1kHz tone at –90dBFS, with: 16-bit data (top), 24-bit data (middle), dithered 1kHz tone at –120dBFS with 24-bit data (bottom) (right channel dashed)
FFT-Derived Spectrum with noise and spuriae of dithered 1kHz tone at –90dBFS, with: 16-bit data (left channel cyan, right magenta), 24-bit data (left blue, right red)
FFT-Derived Spectrum with noise and spuriae of dithered 1kHz tone at –90dBFS, with 24-bit data vis USB (left blue, right red)
Waveform of Undithered 1kHz sinewave at –90.31dBFS, 16-bit data (left channel blue, right red)
Waveform of undithered 1kHz sinewave at –90.31dBFS, 24-bit data (left channel blue, right red)
High-Resolution Jitter Spectrum of analog output signal, 11.025kHz at –6dBFS, sampled at 44.1kHz with LSB toggled at 229Hz: 16-bit data via TosLink from AP SYS2722 (left channel blue, right magenta), 24-bit data (left cyan, right red). Center frequency of trace, 11.025kHz; frequency range, ±3.5kHz
Σχόλιο για τις μετρήσεις του από το Stereophile: "NAD's M51 Direct Digital DAC offers measured performance that is almost beyond reproach. Color me impressed. —John Atkinson"
Ιδέα για να γράψω μια παρουσιασούλα του M51 ήταν ένα post του Chris1987, το οποίο δεν θυμάμαι κάν που και πότε αναφέρθηκε.
Έχει κανείς εμπειρία από το εν λόγω μηχανάκι?
DrPanK, μπας και έχεις ρίξει κανά ώτο ?
Τί σας λέει γενικώς το NADάκι?
Α, μην ξεχάσω: Price: $2000
:ernaehrung004:
