Jump to content
Computer Audiophile

One and a half

  • Content count

  • Joined

  • Last visited

1 Follower

About One and a half

  • Rank
    Senior Member

Personal Information

  • Location

Recent Profile Visitors

17,453 profile views
  1. Like most devices, correct use usually yields good results.
  2. Mojo Audio Illuminati

    Try and measure the chassis voltages between the mono amps and the source in the position now and same when moved to the centre of the power strip. Since ground loops only require microvolts to cause pain, the meter needs to measure down to this level. My guess on this one is the ground contacts have a little less resistance than the ones in the centre on the distribution strip.
  3. Wasn’t it PsAudio that tried an Ethernet input to a dac, was a physical plug in, and it bombed, just didn’t work? I think they were the first to try Ethernet. Was it the Bridge?
  4. So why does the glossy website specifications list pcm files to 192. Poor. Roon alpha program? Hmm no beta either for a while then. Good to see that features wanted are included. I guess Mqa is off or under the table.
  5. Have a couple of questions about Roon and Lumin operations on DSD. If a file is DSD128, how does Roon change this to DSD64? (OK a Roon question, still Lumin owners would know) If Native DSD64 files are played in Roon, are there any audible inter track clicks when heard through a Lumin? Will Lumin be exhibiting at Munich 2018?
  6. Thanks for the info on the Linn. It would be nice for Linn to include even the lowest DSD64, but not to be.
  7. Why is a clock a feature for a switch? Doesn’t the data just move in and out, Layer 2 stuff. Surely there’s enough buffering in the network without the need for a clock. If a clock is installed, surely it needs a rock solid power supply and segregation physically to avoid pollution from the surrounding chips.
  8. Processors give off EMI, even the heatsink acts as an antenna. This noise couples to the PCB and ground planes, therefore layout and materials are important to avoid coupling. Please refer to the pdf in the post from Sun. Why did you sell the Linn? An Overview of Chip Level EMC Problems - IEEE Santa Clara Valley ...032010Radu.pdf
  9. Ethernet is the way of the future, you sound like a politician, some vague promise of glory, that's usually unattainable! What about now, wait it out? Due to the cost of research, USB input to DACs as well as AES3 and Coax will remain for many years. A renderer (is) needs a computer, which needs a program to run and process Ethernet Packets and output to something in the same box that doesn't cause interference. So far, an XMOS type chipset for Ethernet is not on this planet. Processing by way of a computer needs to stay out of a DAC, just look at the lengths Lumin and Linn take to keep that processing away from the DAC, single billeted aluminium, heaven knows how that cool all that gear....and all that machining costs a bomb. Designing a rendering interface is completely different to a DAC, these days, the DAC market is certainly crowded, a lot of research is necessary to produce a product to sell now to make it stand out from the rest of the pack. Two boxes, the diversion you put it are necessary. OK, you could add a fibre optic transmission layer, I'm sure the audio would agree on one protocol, not. It will be a while to wait, or for now just cough up the cash for the Linn or gamble on an Bricasti M1, Lynx Hilo on Dante (no Roon!).
  10. I have the deepest respect for the writings of Christiaan Punter and I enjoy his reviews very much. As opposed to the founder of CA, Hi fi Advice does comparisons there and then, and that's valuable, since people have an idea where the reference line is. On the M5 review specifically, he says USB shines, AES3 and coax still have excellent attributes (see quote below). I wonder if overall liveliness means an increase in jitter, dunno, it's symptomatic. This is the problem of reviews and the manufacturer being mum on what's inside to make a valid comparison with another component. A clean 5V rail is not enough, there's a computer in there, on Linux, USB cabling also has an effect on sources and components. The main take away from the review was the redundancy of the likes of Aurender with Roon and that a dedicated computer can still hold its own. "Connected via USB the Bricasti definitely sounds best to my ears. This way it retains all of the organic and full bodied sound, large soundstage and superbly sonorous bass that the coax output provided, but gains more speed and attack as well as more overall liveliness. So far the latter was one of the main dividers between the (Antipodes) DS and M5, but with USB the two come closer together."
  11. Mojo Audio Illuminati

    Ground loops occur when chassis voltages between equipments have differences. If all the 0V are grounded in the one spot like they are in a typical ATX supply, the ground loops are under control in the computer. Ideally, the ground point in the computer should be attached to the DAC’s chassis with a separate cable and not through the signal wires.
  12. I would think the former would be worse since USB is untreated, and no mention of galvanic isolation on the output for USB for the M5. The AES3 output would be better, but no DSD256 direct.
  13. Interesting outcome and great troubleshooting technique! Now would an industrial SD card with specified read / write and increased temperature range work better?