Mr Spock
demokratischer - sektor
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- Reaction score
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Jadis JS1 MkV Reference D/A processor
What makes this a Jadis component—and distinct from most other digital gear—is tubes, which are used in the output stage of the analog section and for regulation in the massive outboard power supply. Digital conversion is accomplished with a pair of AK4497 DAC chips from Asahi Kasei Microdevices. S/PDIF (RCA and TosLink), AES3, and USB inputs are provided; these top out at 24/192 except for the USB input, which allows sampling frequencies of up to 384kHz and the playback of DSD files
There's no perfection in the world of things, and the one area where the Jadis left me wanting slightly more is detail. I want to be precise here: The processor never sounded overly warm, congested, or lacking in resolution, in the manner of some tubed digital components from the 1990s. It was simply a matter of balance. As much as I loved the JS1's spatially monumental, tonally saturated sound and compulsive listenability, I sometimes wished it dug a little deeper into the mix. It was like enjoying a rich, barrel-aged Chardonnay and wishing for a little more acidity
Description: tubed, two-chassis. 24-bit, D/A converter. Tube complement: two ECC82 and two ECC88 in the analog section and one each EL84 and EF86 in the power supply. Inputs: one each AES3, S/PDIF electrical (RCA), S/PDIF optical (TosLink), USB. AES3, coaxial, and TosLink inputs convert data up to 24/192; USB accepts and converts data up to 24/384, plus DSD. Outputs: One pair unbalanced (RCA), one pair balanced (XLR). The JS1 MkV is fully balanced through the XLR outputs. S/N ratio: >100dB. Frequency range: 20Hz–20kHz. Output level: 2.5V RMS.
Dimensions: Each chassis is 18" (455mm) W × 5" (125mm) H × 12.8" (325mm) D. Weight: 66.1lb (30kg).
Finish: Silver and gold.
wideband spectrum of white noise at –4dBFS (left channel red, right magenta) and 19.1kHz tone at 0dBFS (left blue, right cyan), with data sampled at 44.1kHz (20dB/vertical div.)
high-resolution jitter spectrum of analog output signal, 11.025kHz at –6dBFS, sampled at 44.1kHz with LSB toggled at 229Hz: 16-bit TosLink data (left channel blue, right red). Center frequency of trace, 11.025kHz; frequency range, ±3.5kHz.
Jadis JS1 MkV Reference D/A processor
"Resolution can be a tricky thing when it comes to digital," my friend Michael Lavorgna recently told me. "Too much, and my focus shifts from music to sound; too little, and I become less engaged." Lavorgna, a visual artist and proprietor of the online audio-and-music publication Twittering...
