Devialet Chat

@LupusAlpha , many thanks for the tip! One question, I am not sure if I am missing something here, but it looks to me that this procedure could actually be made to work with a single PC?

I am using a headless Mac Mini as a music server, so for me it was just more convenient to do it with 2 computers. Thinking about it, I see no reason why you wouldn‘t be able to perform the same with one PC. It would be very interesting to hear any results, if you give it a try.
I am myself considering doing a similar measurement, but to see if it‘s possible to quantify the differences I hear between a Habst BNC and a Canare 12G-SDI 4K UHD Single-Channel BNC Cable between my Mutec Ref-10 and Mutec MC-3+.

(30-Mar-2018, 06:32)LupusAlpha Wrote: [ -> ] 
I am myself considering doing a similar measurement, but to see if it‘s possible to quantify the differences I hear between a Habst BNC and a Canare 12G-SDI 4K UHD Single-Channel BNC Cable between my Mutec Ref-10 and Mutec MC-3+.

Which model of Canare 12G-SDI UHD are you using? Can you please describe the differences briefly that you hear? 

@Confused - As some, I also commented earlier that the SOtM kit may sound a bit edgy/digital/unrelaxed with the SPS-500. I found the PH SR3 and the Uptone JS-2 much more relaxed but at the same time giving equally detailed sound. I fully understand your reasoning for not wanting to invest in something that may end up on eBay later but that not trying other power supplies may be the very reason why your SOtM ends up on eBay. If you can, try to borrow something at least to see the difference.  

I had some very intriguing issues with my newly purchased tx-USB ultra that is still being resolved but part of this resolution process I had to change voltage back and forth (9V-12V) and also try different power supplies. I will share my findings here at the weekend. 

Zoltan

Thanks again to @LupusAlpha for the REW tip, and also to @SwissBear for having the idea in the first place.  I gave it a try this morning, but with most peculiar results, see screenshot.

[attachment=2726]

The light green line (the sensible looking more horizontal line) was generated using REW in the conventional way with Devialet AIR.  The darker green and blue lines were generated by playing the sweep file via Roon integrated AIR and then via Roon RAAT with the SOtM kit.

So however I play the sweep file via Roon I get this strange upward line from 3kHz.  I can get similar results playing the file via  iTunes AirPlay.  Curiously, the sweep file played via Roon sounds the same as it does directly from REW.  Clearly something is wrong!

REW has an integrated test tone generator which plays without a delay. If you play some files via REW via streaming which usually introduces a delay the measurement will be unusable.
For this you can maybe use Carma from Audionet. This is using a file-based testtone and starts as soon as it recognized the sound. That should give more reasonable results.

@Vivialet - In REW when you generate the sweep file you can include a timing reference signal. I think I missed it in one of the above sweeps, which is why they are out of line slightly, but this is not the reason behind the strange upward slope. I will take a look at Carma though, thanks for the tip.

@zdenes I am using the 3‘ cable:
https://www.bhphotovideo.com/c/product/1...cable.html

Unfortunately lyrically describing what I hear is not my strenght. In the Habst the micro details are just more evident and there is a certain firmness and calm to the sound. The tonal density I have found with the Canare is to a large degree missing as is a certain warmth that the Canare exhibits. I am still re-adjusting to the new sound of the Habst, but once you get more used it, it truly sounds fantastic with the vocals being more forward and nuanced and especially all the small details standing out so much more clearly.
The Habst is still being burned in and I find it‘s sound constantly evolving. With longer use especially the mid-range is getting more mass and a certain edginess/glare in the highs is smoothening out.

(30-Mar-2018, 16:15)LupusAlpha Wrote: [ -> ]@zdenes I am using the 3‘ cable:
https://www.bhphotovideo.com/c/product/1...cable.html

Unfortunately lyrically describing what I hear is not my strenght. In the Habst the micro details are just more evident and there is a certain firmness and calm to the sound. The tonal density I have found with the Canare is to a large degree missing as is a certain warmth that the Canare exhibits. I am still re-adjusting to the new sound of the Habst, but once you get more used it, it truly sounds fantastic with the vocals being more forward and nuanced and especially all the small details standing out so much more clearly.
The Habst is still being burned in and I find it‘s sound constantly evolving. With longer use especially the mid-range is getting more mass and a certain edginess/glare in the highs is smoothening out.

Thanks. I may eventually buy the Habst. It is interesting that it is better than the top of the range industrial standard that Canare's latest cables represent. I have just ordered the Canare from Japan. They will be tested against my DIY cable based on Oyaide's A808 http://www.neo-w.com/english/as-808-v2-series_e.html - which has practically air as insulation.

The Habst was kindly lent to me to try out, but after hearing it in my system, will most probably buy it. All the raving on other forums has a reason. I was very happy with the Oyaide cable after having tried out the Pasternack cable and the Black Cat Silverstar, but found out the Habst is in a different league. This is also after adding up to 20 ferrites to the other cables. Will still use the Oyaides for my sMS-200 Ultra and tX-USBultra, but the Mutec MC-3+ just is clearly best with the Habst.

(30-Mar-2018, 12:46)Confused Wrote: [ -> ]So however I play the sweep file via Roon I get this strange upward line from 3kHz.  I can get similar results playing the file via  iTunes AirPlay.  Curiously, the sweep file played via Roon sounds the same as it does directly from REW.  Clearly something is wrong!

Just a very quick thought that may explain this mismatch.

When performing a measurement from REW using the sweep wav file, with timing reference, you must specify the same frequency range and length of sweep with the measurement page options as that used to generate the sweep wav file. And, of course, you should also be enabling the timing reference options.