Yes, digital cables matter too


On a suggestion from another Agoner, I recently spent a fair bit of time sorting out the coaxial cable situation connecting my Bluesound Node (gen 3) and my Chord QuteHD dac.  I ended up enlisting outside help, but I learned quite a bit, and I am certain my system will be in a much better place as a result once I pull the trigger on one of the cables evaluated.

I went into a local dealer to buy a different item and mentioned in passing I was interested in trying a different digital cable, and he immediately handed me three and told to take them home and try them out.  My initial impressions were so positive I went to another local dealer and they handed me another five cables to try.  Combined with two coax cables I already had at home, that was a total of ten new and used cables priced from $25 to $1,500 to compare. Cables were: Pangea Premier Digital, Blue Jeans X ‘Better’, DHLabs Silver Sonic, naim DC-1, Chord Shawline, current and past Chord Signature Digital Super ARAY models, and Nordost Blue Heaven and Heimdall 2.

I have bought or assembled and evaluated a number of different PC, digital and analog cables, but until I got the Node, I had never really experimented with digital coax cables.  I have developed my own method for comparing cables that includes making sure all cables have been played recently in my system for st lesst a day, and then listening to a few cuts of various genera and styles of music with each cable and taking general notes.  I enlisted my son who has a very good system and good listening skills for blind testing a few of the cables.

I will touch on some if the highlights here.  

First, I have never listened to either Chord or Nordost cables in a controlled context, and at least for their digital offerings, I am impressed.  I had thought that my DHLabs Silver Sonic coax cable sounded pretty good, and it is often recommended as a good budget cable, but it was left a little bit behind by most of the others I tried in my system.

Second, some of these cables sounded dramatically different, and you get what you pay for.  My son easily identified as his favorite cables the two most expensive cables tested in a blind listening.  The amount of detail and nuance on offer made that result a near certainty.

Third, putting these high quality cables between the latest iteration of the Node and the Chord dac indicated how good the Node functions as a server for HD, 16/44 and mp3 files, and proved to me that digital cables make a big difference in this context.

The lower level Chord Shawline and Nordost Blue Heaven are both lovely cables.  The Shawline is balanced with good spatial detail and broad soundstage.  The Blue Heaven is super musical with great PRAT, an emphasis on leading edges and a lower center of gravity.  Of the two, there’s a bit more detail on offer from the Shawline. Compared to my Silver Sonic, both had less grain, sounded more organized and less shouty.  Either would have been an improvement, and I probably would have bought the Shawline if I hadn’t listened to cables further up both lines.

The naim DC-1 is a nice cable and a slight step up from the Shawline and Blue Heaven in terms of spatial resolution and detail, but interestingly, the naim wire had less PRAT and drive than either of the Nordost products.

The Nordost Heimdall 2 is a really lovely cable, similar PRAT and flow as the Blue Heaven, but more high frequency information, better tone, oodles of detail and very accurate placement of instruments and voices in the sound stage, all without sounding lit up or over the top.  It took this cable a few hours of playing to get to this point.  When I first dropped it in, it sounded a little thin.

The Chord Signature Super ARAY is also a great cable.  My son in the blind listening described it as not quite as punchy on leading edges as the Heimdall 2, but he felt the midrange was to die for, and this cable did voices better than any other cable in my test.  Very good tone, and detail and spatial resolution were also convincing with this cable.

One surprise in my listening was the Blue Jeans digital cable made specifically for Hawthorne Stereo.  At just shy of a hundred bucks, this was a very good deal.  It lacks the PRAT of the Blue Heaven, but it was smooth, good tone, sound stage and separation and bass definition.  The treble is a bit tipped up, but no jitter glare.  It doesn’t set a foot wrong, and especially for the price.  I did have trouble getting the RCA connectors to grip the socket on the Node, and the cable is stiff, which didn’t help.

So, in conclusion, yeah, trying different coax cables with the Node was a real ear opener.  When I first thought about upgrading my coax cable, I never considered spending up to half of the combined value new of my streamer and dac, but now I plan to buy one of the more expensive cables I tried, because after listening to them in my system, there is no going back.

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Showing 8 responses by nonoise

On thing to add is that this is the only digital cable I've tried that passes everything without any drop outs. The three coax and three Toslink cables I've tried before all failed to play two of my CDs without peppering them with audio drop outs. 

They all had indicated perfect locks on the signal at 176.4 MHz yet couldn't play those two CDs successfully. Goes to show there's more than 1's and 0's going on with digital. 

I still can't believe the quality of playback I'm getting with this cable.

All the best,
Nonoise

@knownothing ,Just wanted to give you a big thank you for your recommendation on the DH Labs Glass Master Toslink. I just put it in and man, oh man, what an improvement. More air, depth, ambience, tone and texture to revel in. 

Even facing away from my system as I type this I can hear and appreciate the improvements. I have to keep this short as Lady Blackbird is calling to me and I can't resist.

All the best,
Nonoise

Just wanted to note that I went back and tried the shorter (1 meter) version of the Unique Products Glass Toslink cable as I really never heard it with my new speakers. My conclusions were based on hearing them with my older set up using JBL 4319 monitors with their Al/Mag tweeters and mid range drivers. The 2 meter version of the Toslink cable ameliorated the harsh highs and leading edge those metallic drivers produced.

The drivers on the Atalante 3 monitors exhibit none of those qualities and the detail, air and ambience are there in spades along with a tighter bass with no loss of richness or body. 

Looks like I may now try out that DH Labs Glass Master Toslink after all and save some money not going for the longer length.

All the best,
Nonoise

@knownothing Thanks for the follow up. I'll check out the DH labs but stay content for the time being with my Unique Products Toslink.

All the best,
Nonoise

@knownothing Thanks for the heads up on the DH Labs Toslink. Before I think about getting one can you tell me if the Unique Products Toslink was a one meter length, or was it longer?

All the best,
Nonoise

@soix , When I use Toslink for my TV feed, it shows a 48Hz lock on my Technics readout but when I play CDs, the readout shows a 176.4 Hz lock on the signal (the SACD player oversamples all signals) The Technics SU-G700M2 is a completely digital integrated (with only one analog stage at the speaker outputs) that does more than just pass a signal.

TOSLINK fiber optic cables are more than capable of supporting audio resolutions 24-bit 192khz and more with a few caveats. Find out what’s needed to play and enjoy your audio over fiber optics

As for AES/EBU, I have no out/inputs for that so I can’t say. I believe what the Technics does with a digital signal is not really appreciated by most and they probably felt that AES/EBU and HDMI weren’t needed with the results they got. Can’t really say as I don’t really know.🤔

As for Coax, I only tried a Zu Mission Coax, an Audio Envy Coax, and one made for me by a recording engineer (it was a Supra brand cable with WBT locking connectors).

And no, it’s not total nonsense. All one needs to do is listen to the results of this kind of set up.

All the best,
Nonoise

I prefer glass Toslink over coax and RCA for digital out and discovered that cable length matters with Toslink as well. The ones I tried were Supra Zac, Lifatec and Unique Products.

The Supra Zac are a proprietary strand of plastic with an highly polished and curved end that has a very pleasant sound. A bit soft and forgiving with some rounding of the base.

The Lifatec is from a medical grade manufacturer back east whose owner does the Toslink cabling on the side. It’s gotten very favorable feedback and has a more focused, tighter and detailed sound than the Supra. It uses 470 strands of glass fiber and has in house made connectors that are the best in the business. They just snap into place for perfect alignment.

What surprised me was the Unique Products glass fiber Toslink from Amazon. It uses "only" 280 strands of glass and outperformed the Supra and the Lifatec. The only caveat is to get the 6’ length as it has a much fuller and richer sound compared to the 3’ length with no loss of detail, air, ambience, pacing, etc. and it goes for the heady price of $40.00. That’s about $30 less than the Supra and $120 less than the Lifatec.

I also tried these on my TV’s audio out via Toslink to gauge their mettle and the 3’ Unique Products was too revealing and unforgiving (a home improvement show sounded like it was way too raw) and it was somewhat of a tie with the Lifatec and the 6’ Unique Products with the Supra coming in last. I ended up with the Lifatec on my TV and the 6’ Unique Products for my digital out on my Tecnics SACD player to my Technics SU-G700M2. It even bested the Darwin Cables Enlightenment RCA that I was using for the Coax connection, and I thought nothing could better that.

All the best,
Nonoise

 

 

Great review of what you had on hand and a testament to the labors involved. I only tried 3 Coax cables and when I realized just how different they all sounded in matters small and large, I gave up and settled on a RCA cable that I really like (heresy, I know) as it outperformed the Coax cables (handily).

I know there's much more out there but even the maker of the cable told me he doesn't use any coax cables either, even though he makes them. Funny that.

All the best,
Nonoise