Just wondering while we are talking about it, I still have an Audio Alchemy DTI, which I used between a Magnavox CD650 player used as a transport and a PS Audio Digital Link gen ll dac and it definitely made an improvement in that set up. Would that be a viable option or am I reaching?
How can I tell if I need a better clock for my DAC?
I was interested in the responses to a related post by leemaze this week, saying that a Synchro Mesh was a good way to improve a DAC with subpar jitter. I have a Cambridge CXU, with an inboard DAC; how could I determine how much jitter it has?
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A clock is such a small part of the big picture . I have found if you have a external power supply this is vastly more profound an upgrade. The Mojo Illuminati -2 external power supplies are miles ahead of what are stuffed in the stock boxes. i have a Lumin dac- D-1 Player that comes with a crappy smps , evrn a Sbooster Linear supply is much better. The Mojo is on par even the Lumin flagships S-1 Power supply at 3x the moneys . my point is if you can improve your power supply well worth the efforts. |
This Stereophile AES J-test includes a very high level signal mixed with a LSB (smallest signal) and is a great test for interface jitter and any modulation distortion. Ex 1. Benchmark DAC3 HGC, high-resolution jitter spectrum of analog output signal, 11.025kHz at –6dBFS, sampled at 44.1kHz with LSB toggled at 229Hz: 24-bit TosLink data (left channel blue, right red). Center frequency of trace, 11.025kHz; frequency range, ±3.5kHz. https://www.stereophile.com/images/1117BDAC3fig11.jpg There is no jitter (spurious signal) visible above -150 dbfs noise floor on the analog output. This means there is excellent interface jitter rejection. —-&———————— Ex 2. Schiit Yggdrasil, high-resolution jitter spectrum of analog output signal, 11.025kHz at –6dBFS, sampled at 44.1kHz with LSB toggled at 229Hz: 24-bit USB data (left channel blue, right red). Center frequency of trace, 11.025kHz; frequency range, ±3.5kHz. https://www.stereophile.com/images/217Schiitfig12.jpg There is jitter (lots of low level spurious signal at very specific tones).... probably inaudible but it is there. |
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