Fourlegs

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Everything posted by Fourlegs

  1. Well, there is nothing like a bit of condescension to keep the thread active. Many of us do have stuff around us and many domestic environments might well be just as affected as you are. I am therefore just slightly perplexed as to why you think a balanced mains transformer will benefit you but not others. I heard the difference it made in my system. It may well be that your installation has at its heart a transformer made by one of your so called ‘HiFi/boutique’ firms. My balanced mains transformer is made by a very well known, not to mention large, manufacturer and designer of industrial transformers
  2. Please point me in the direction of ANY review of a streamer/server which has ANY measurements which might give a clue as to its sound quality. I am not aware of any. Hecky asked this and you replied I think others have mentioned that ethernet isolation is not the golden bullet it might at first appear to be. Ethernet standard transformer noise isolation does not appear good enough for demanding audio and using "optical Ethernet for full galvanic isolation" is far from being free of issues. I mentioned I am interested in the sound quality differences the between the different connections between streamer and DAC as highlighted in the discussion of the Antipodes K50 and also I am interested in the difference they discuss regarding the different sound qualities of the music depending on which control software is used for file playback. I personally am wavering in my opinion of Roon at the moment on those grounds. On you're first point, I agree that it does seem best to keep upsampling (and indeed processing in general) well away from the DAC. On your second point on the DAC differences (or lack of them according to you) I think we will have to agree to disagree. And if you think that there isn't much difference in DACs, do you hear any differences between streamers?
  3. In relation to optical I have been looking at the new Antipodes K50 steamer/server (promoted by a friend who has one on home demo) which is pretty near state of the art and it dispenses with any optical connections. Can one assume from this that any advantages of optical were judged to be outweighed by the disadvantages I wonder. A comprehensive review of the K50 found differences in the sound between the digital outputs but my friend prefers the spdif output.
  4. Another possible reason for streaming to be different to a cd transport is that I have found the software used with my streamer (Innuos Statement) affects their sound. For instance Roon sounds closed in compared to Sqeezepad or iPeng.
  5. But for instance AirLink have more orders than they can cope with so there is little incentive for them to do what you are suggesting.
  6. and also @Griff500 recently bought the ATC SCM 40A.
  7. Innuos have announced this but the most important thing for me in their releases notes is the mention of the awaited innuOS 2.0!! I'm looking forward to that. INNUOS RELEASE 1.4.6 Released 02/12/2020 This release upgrades the base innuOS libraries in preparation for innuOS 2.0. It also upgrades the internal music library (LMS) and UPnP (AssetUPnP) to latest releases as well as bug fixes and general performance improvements. Please note this is a long update that can take up to 30 minutes depending on the speed of your Internet connection. Please do not turn off your system until the update is complete. New Features Updated Logitech Media Server to version 8.0.1 Updated AssetUPNP to version 7.0 Fixes New TIDAL configuration procedure to adapt to changes on TIDAL integration Fixes issues with Spotify not logging in dCS Mosaic now lists albums sorted by track number and not alphabetically Fixes Native DSD options - now all 3 modes (Transcode, DoP and Native) are explicit Fixes issue on accessing network shares on latest Mac OS X or some Windows machines on a Domain Fixes issue with errors connecting to NAS when the password contained "$" characters Fixes some DNS issues on some network routers Other small fixes and enhancements.
  8. yes, that says it all. A question though, I have a 3KVA one and you have dangled the possibility of a 10KVA one being better, so is it? Keith brought his 7.5KVA to my house to compare and neither he nor I could tell any difference. Should I play with a 10KVA?
  9. At least you are gracious to acknowledge that you have prejudice.
  10. One aspect of a review, especially as this one is by a respected member of this forum, is that it might prompt the thought that if he thinks there is something in what he heard (and bought) then perhaps it is worth investigating at a more technical level. You will probably be aware that the reviewer's day job was at a high level in a very technical industry and his foo sensitivity is probably higher than most. You say you prefer forums, well the guy who wrote that review probably talks more sense on here than most of the stuff we see posted. Your choice what to do with your time though.
  11. I suspect you are missing quite a bit of what is going on in the audio world if you 'don't do' reviews. But it is a free world. I guess that's the end of our discussion then. Oh, well (to quote one of my favourite early Fleetwood Mac songs).
  12. Just because ether Ethernet is used for data transmission with audio equipment does not mean that noise cannot piggy back in the cable and then get into sensitive audio circuits. It doesn't even have to get into the cable via radiated noise, it might come from the transmission equipment such as the router or switch. There is the possibility and many claim that just having the ethernet cable connected might still be a problem even when it is not being used to stream music files, ie when the music is being played from a local disc within the audio equipment and the ethernet connection is just being used for file section in Roon or similar. Have a read of the review by one of our mods of an Ethernet filter. The Innuos info was I think from an interview with Nuno. I would not expect them to publish such work as it is part of their product development.
  13. Basically, no to what you say. Rob Watts has often gone into detail about the effects of low amounts of RF noise in the analogue stages producing IMD and which is easily audible but only when music is playing. The actual RF is not audible and there certainly does not need to to be saturation of the stage for there to be an audible problem.
  14. That standard was created against the background of data transmission integrity. The galvanic isolation only mitigates against noise transmission and is not 100% effective. In other words it is 'good enough' in the world of data transmission but perhaps not good enough for audio circuits which are more sensitive to noise. In data transmission is all the ones and nought arrive intact and in the right order then it is success. An amount of noise is not an issue. Yes, optical is an option but remember that optical converters themselves create noise. This is well known in telecommunications where again, all long as the noise does not interfere with the data transfer then by and large it is not an issue. However, perhaps put the same amount of noise near or in an audio circuit and it might create distortion in the analogue circuits of a dac. I have mentioned before that Innuos say they measured noise in USB and Optical pcb and there was more noise in the optical pcb and hence why they went to usb for their top of the line streamer rather than optical.
  15. You misunderstand the impact of various types of noise on audio circuits. In particular IMD caused by out of audio band noise is not audible just by putting your ear to the tweeter, it requires music to be playing.
  16. I'm not sure that paper does provide enough info. It deals specifically with the impact of noise and other matters on data transfer rates. The audio industry is of course concerned with that but also needs to consider the impact of noise on analogue circuits and which is a different set of parameters.
  17. Bear in mind that all my digital gear either came with a factory LPS such as in the Innuos Statement streamer or I have modified them to be powered by Sean Jacobs LPS instead of the SMPS.
  18. I found no difference to my streamer, mscaler or dac by adding this Plixir balanced mains transformer but I did hear a noticeable improvement with the power amps, particularly in the bass definition. I paid a low fraction of new price by buying an ex demo, otherwise I would have gone with an AirLink but the Plixir looks really slick so I can have it next to the hifi rather than hidden away. They do other lower power versions which are obviously much cheaper, lets face it one rarely needs 3KVA for a hi for set up! www.plixirpower.com/collections/elite-bac/products/elite-bac-3000
  19. I have just spent a happy hour or two making some dc cables from the Gotham GAC-4/1 ultra pro star quad. I like it.
  20. It’s your get rich quick scheme! You’ve invented a clock that doesn’t need power or winding up!
  21. The improvement due to the Phoenix is indeed of the sort which might be consistent with noise reducing. I have heard the Mutec twice and briefly at that but I am less sure that any difference in sound that I heard was due to noise reducing.
  22. Haha, that made me smile and you will realise when Keith @MF 1000 explains the decision making process that lead up to him acquiring it.
  23. If you want a custom length then I suggest Ghent Audio. I have used them and been very satisifed. https://www.ghentaudio.com/usb/index.html
  24. No, not even with my excess mains voltage but I did take the precaution of lining out the case panels with sound deadening sheets.
  25. Just do it. My Plixir balanced mains transformer is the best decision I have made recently. Other cheaper options are available but they need hiding in a cupboard.