CHORD ELECTRONICS DAVE
Apr 18, 2016 at 12:51 AM Post #2,551 of 25,835
A lot of interesting information coming from bacon and romaz. It's hard to get definitive conclusions out of all this, and no reason why it necessarily should be easy. E.g. bacon thought his P10 power regenerator had a significant impact, whereas romaz has sold off most of his power conditioning components as being redundant.

The strangest part for me was why the cross-feed setting should matter so much when comparing digital inputs. Personally, I found the cross-feed (and HF Filter)  settings to be very subtle and slightly perferred both to be left off (admittedly in quite short comparisons).

To me, it seems like the term "YMMV" still applies to DAVE, just not necessarily in the same way, or to the same level, as it does to other DACs.
As power supply considerations do seem to be important, I couldn't see in the HFN internal photo of DAVE that there was a fuse anywhere in it's power input section. So it's either well hidden or DAVE uses some more sophisticated form of power protection? 


Well said. YMMV. We each live in different environments with varying qualities of power, listening rooms, ancillary equipment and of course, there is the matter of personal preference and so our differing choices probably reflects how we each choose to compensate for the shortcomings in our systems. With regard to settings on the DAVE, like you, I value the ability to switch polarity and I do it often. Unlike you, Crossfeed 3 is quite apparent compared to 0 and I greatly prefer it in all instances and so I never touch this setting.
 
Apr 18, 2016 at 12:58 AM Post #2,552 of 25,835
Roy, I think the people who raved about T+A DAC8 over DAVE are not using it straight as a DAC or using T+A to internally upsample. They are using their desktop computer CPU & GPU to upsample music to DSD512 with the most sophisticated computationally intensive algorithms and then playing the DSD512 file/stream back on the T+A DAC8.


Ahh, ok, I get it now and it makes sense because what I heard was not anything special so it was hard to understand what all the fuss is about.
 
Apr 18, 2016 at 3:44 AM Post #2,553 of 25,835
  Since shuttlepod brought this up, I'm going to add to this some more for Roy (Romaz) and Bacon. As you know, my recent discovery is that if I have something plugged into my BNC input of the DAVE, the RF/ground noise from that source always adversely affect the sonic output from DAVE (to varying degrees), even if I'm playing off USB or Toslink. I'm guessing when Roy and Bacon tested Chord DAVE, when they were comparing USB vs XLR, I presume the XLR and USB cables are both plugged in at the same time so that you can easily switch between the two inputs.
 
But if my theory is correct, there in lies the problem. With that kind of setup, when you're listening to XLR, you're just listening to the XLR signal + possibly the noise pollution from the XLR. But when you're listening to USB, you're listening to the USB + the noise pollution from the XLR. Now how would that affect the sound, obviously, I'm not sure. But I think to genuinely confirm that XLR is superior to USB, you actually need to unplug the XLR cable when you're listening to USB. Otherwise, maybe the performance of the USB is degraded simply by the noise coming from the XLR.

Interesting thought. I wondered about this when you first reported it but didn't know what to think of it.  I just returned home and while listening to USB, I plugged in an old cheap AES/EBU into the DAVE and heard no change in SQ.  
 
Apr 18, 2016 at 3:53 AM Post #2,554 of 25,835
   
Hi Roy--
 
You are really doing some yeoman work, inserting the DAVE into many different systems and comparisons and sharing your findings with us. It is much appreciated as we learn more about DAVE and other dacs. Perhaps your most interesting observation concerns the AES/EBU input of the DAVE. If you can duplicate this with a different Aurender (the W20) at today's show, then it obviously suggests that Rob's position that USB is the best input may not always be true. That would be pretty surprising. If that is the case, then it begs a number of other questions, one of which would be whether you need a very expensive source like an Aurender to achieve this feat or whether a fairly simple conversion device might do the trick. 
 
With the Schiit Yggy, for example, there are people who use a Yellowtec PUC2 Lite to convert a USB signal to AES/EBU for around $500. See http://stereotimes.com/post/yellowtec-puc2-lite-usb-converter/. A device like this might sound inferior to the AES output of an Aurender for any number of reasons, but the price differential alone would demand a comparison. You sounded pretty confident in your statement that USB sounded "quite compressed" to the AES input (and you were corroborated by the other listeners).
 
Looking forward to your further thoughts on this subject, Roy.
 

Thanks, Jon.  I just returned home from Chicago and so it is late but I will report my findings tomorrow.  Beolab was correct, there are differences with the W20 over even the N10 but there is much more to it than just that.
 
Apr 18, 2016 at 7:34 AM Post #2,555 of 25,835
Interesting thought. I wondered about this when you first reported it but didn't know what to think of it.  I just returned home and while listening to USB, I plugged in an old cheap AES/EBU into the DAVE and heard no change in SQ.  


Hmmm... What's the source for AES/EBU? And is the source on to put out a signal to the DAVE because I presume you're still listening to USB through the SonicOrbiter. I'm guessing this is one of those YMMV situation. For me, with the BNC input, the source is miniDSP nanoDIGI B and it was powered by a stock switch-mode power supply and originally hooked up to my Oppo BDP-103 via coaxial. The audio degradation was obvious. When I switched the connection from coaxial to Toslink between the Oppo and miniDSP, the audio degradation was decreased but still clearly audible. Now, I have a linear power supply for the miniDSP and the audio degradation is fairly subtle so I would have to pay a lot of attention to pick out the difference but it's still there.
 
Apr 18, 2016 at 12:12 PM Post #2,556 of 25,835
  Just curious Bacon (if you have experience in these) you consider the TT a champ in the under $10K DAC category. (And do others here feel that is true? And not necessarily the best, but up there with them.)

Personally, I really like the TT, always have. Extremely detailed, still musical, but lacks a bit of warmth for a truly euphoric sound. For some studio recordings, it's actually a subtle difference between DAVE and TT (I think I wrote raw notes on some of them). I blind tested my girlfriend and she also couldn't tell the differences between a few tracks. Once we switched to higher-res live recordings, the differences were enormous and obvious. I think I could say safely, it's a champ under the $8k bracket :)
 
From the DACs I've heard, right under $10k before taxes/shipping...if I already have a decent streamer/music server, I think the MSB Analog w/power base (without Quad USB or upgraded power cord) is probably the better sounding DAC. 
 
Apr 18, 2016 at 12:29 PM Post #2,557 of 25,835
  Another question for you, Bacon, if you don't mind:
 
I'm a little confused after reading your description of the effect of changing crossfeed settings on DAVE with the Lumin and laptop as sources. First, you state that, using the crossfeed 0 setting, you found the Lumin to be more transparent, more holographic, with a more quiet background. But you still found the laptop's USB feed to DAVE to be more natural and musical. Based on that description, I think I would opt for "natural and musical" (and save a lot of money by using a relatively inexpensive computer vs. a Lumin). 
 
But then you found the following with the crossfeed set at 3: 
 
However, with Crossfeed 3 enabled…the differences were subtle. Almost like the data from the optical and USB is shaped into the same output stream when Crossfeed 3 is activated. I don’t know for sure but this is what I’ve concluded from my listening (I’m sure Rob Watts could chime in). I don’t hear any immediate difference from optical or USB only if Crossfeed 3 is used. To be clear, there are differences, but they aren’t noticeable unlike Crossfeed 0.
 
In Crossfeed 0, the USB just sounds more natural and musical but lacks a bit of depth. It still sounds like it as a deep soundstage until you compare it directly with the Lumin. On Crossfeed 3, the Lumin kills the USB. From a technical standpoint. The Lumin has more of the holographic sound but isn’t really accurate or faithful until Crossfeed 3 is activated. You almost get the best of both worlds in Crossfeed 3 with the Lumin S1.
 
Here's where I'm confused. You first state that differences were "subtle" with crossfeed 3 and you did not hear any immediate difference between optical (Lumin) and USB (laptop). But you follow that up with "On Crossfeed 3, the Lumin kills the USB."  I'm confused. Is the Lumin much better than the laptop on crossfeed 3, or are the differences "subtle"? You seem to articulate completely opposing thoughts in these sentences. Am I missing something or are we just failing to communicate?
 
I guess I'm also surprised, like The Attorney, that a crossfeed setting would make a significant difference with different sources. When I switched crossfeed settings in my own two-week audition of the DAVE, I found the differences to be very subtle (this was using a single source). Not sure why this would change with different sources. 
 
Once again, Bacon, I appreciate all the work you've done here and find your evaluation to be very useful.

Great question and I apologize for the ambiguity. I'll update the post to clarify.
 
When I switch between Crossfeed 0 and 3 with just the Lumin, the holistic sonic differences were significant (Hopefully someone else with a Lumin S1 could confirm this). With the DAVE not so much. However, with Crossfeed 3, both the Lumin and the DAVE sounded more similar and I couldn't immediately tell the difference (like I did with Crossfeed 0)...but in the end, the Lumin still had more depth, tighter, and a quieter background. 
 
I hope that clears it up!
 
Apr 18, 2016 at 12:44 PM Post #2,558 of 25,835
Ok, Bacon, thanks for taking the time to clarify that. I think it's interesting that some folks hear significant differences between different crossfeeds. I recognize that some of this may be due to the sources we are using. But some of it may be due to individual differences in our hearing and the sonic qualities that each of us zeroes in on when listening. For example, I put a high premium on tone (both timbre and the extent to which tone is more substantive or less substantive). Roy clearly has a very keen ear for depth, space, layering, and air. So too with Bacon, it would appear. That might explain, to some degree, why Roy and Bacon hear significant differences with different crossfeeds, while The Attorney and I have not. Just speculation.
 
Apr 18, 2016 at 1:33 PM Post #2,560 of 25,835
  Ok, Bacon, thanks for taking the time to clarify that. I think it's interesting that some folks hear significant differences between different crossfeeds. I recognize that some of this may be due to the sources we are using. But some of it may be due to individual differences in our hearing and the sonic qualities that each of us zeroes in on when listening. For example, I put a high premium on tone (both timbre and the extent to which tone is more substantive or less substantive). Roy clearly has a very keen ear for depth, space, layering, and air. So too with Bacon, it would appear. That might explain, to some degree, why Roy and Bacon hear significant differences with different crossfeeds, while The Attorney and I have not. Just speculation.

Which headphones are you using again? 
 
Roy was there when I swapped between the crossfeed settings on the DAVE and it didn't take more than 5 minutes for me to settle on crossfeed 3. I get a much more natural sound and a better sense of the space and air. It just sounds more "as-intended" to my ears. Not to mention, with the Abyss, crossfeed 0 actually comes off a bit harsh and artificial in the treble region (anyone else with Abyss + DAVE notice this? @Beolab). Switching back to 3 and I'm in a happy place.
 
As you mentioned, I'm also thinking "significant differences" is correlated to sonic qualities that we zero in on as well. I think tone is superb on both but I preferred the more cohesive delivery of 3.
 
Apr 18, 2016 at 1:59 PM Post #2,561 of 25,835
Which headphones are you using again? 

Roy was there when I swapped between the crossfeed settings on the DAVE and it didn't take more than 5 minutes for me to settle on crossfeed 3. I get a much more natural sound and a better sense of the space and air. It just sounds more "as-intended" to my ears. Not to mention, with the Abyss, crossfeed 0 actually comes off a bit harsh and artificial in the treble region (anyone else with Abyss + DAVE notice this? @Beolab
). Switching back to 3 and I'm in a happy place.

As you mentioned, I'm also thinking "significant differences" is correlated to sonic qualities that we zero in on as well. I think tone is superb on both but I preferred the more cohesive delivery of 3.


Yes i do not use the crossfeed setting 1 or 2 at all, i toggle btw setting 0 (off) or 3, and i just find a slight more grain and a litte less scale of space in the top end in setting 3, so it is little more intimate if you like it like that.

It is more a matter of taste and i have sometimes hard to distinguish what is really better, or if it just another presentation of the sound. It is a big question on how was it intended to sound from the mastering studio, so i test on my ATC SCM50 SL A Speakers as a "reference " or go to a classic concert to be really sure of how it should sound.
 
Apr 18, 2016 at 5:25 PM Post #2,562 of 25,835
  Which headphones are you using again? 
 
Roy was there when I swapped between the crossfeed settings on the DAVE and it didn't take more than 5 minutes for me to settle on crossfeed 3. I get a much more natural sound and a better sense of the space and air. It just sounds more "as-intended" to my ears. Not to mention, with the Abyss, crossfeed 0 actually comes off a bit harsh and artificial in the treble region (anyone else with Abyss + DAVE notice this? @Beolab). Switching back to 3 and I'm in a happy place.
 
As you mentioned, I'm also thinking "significant differences" is correlated to sonic qualities that we zero in on as well. I think tone is superb on both but I preferred the more cohesive delivery of 3.


I was using both an HE1000 (with upgraded cable) and an unmodified HD800 (with stock cable) when auditioning DAVE over a two-week period. Mostly, though, I was listening through my two-channel loudspeaker system. Most of my listening was with crossfeed 0 and I didn't really spend a lot of time switching back and forth. If I end up purchasing a DAVE, I will certainly play around with this some more. 
 
Apr 18, 2016 at 10:31 PM Post #2,563 of 25,835
Hmmm... What's the source for AES/EBU? 

Sorry, I misunderstood you.  I thought you were saying you were noticing a drop in SQ just by having a BNC cable plugged into the DAVE and not necessarily having it plugged into a source.  Right now, I don't have an AES/EBU source and so I just plugged in an AES/EBU cable into the DAVE but what you're saying makes more sense.  With my TotalDac, when a digital input wasn't being used, it was designed to be completely decoupled from ground and so this type of negative impact was not possible.  I don't know if the DAVE has been designed this way.
 
Apr 19, 2016 at 1:33 AM Post #2,564 of 25,835
AXPONA with the DAVE
 
While my DAVE has nowhere near the 150,000 miles that Rob's DAVE has logged, it is on its way, having logged more than 4,000 miles this weekend as it traveled from northern California to Chicago and back.  I found a nice padded backpack with 3 compartments that nicely fits my DAVE, HE-1000, Silver Spore4 and laptop perfectly and so I was able to make the trip without checking any bags.  Unfortunately, my DAVE was mistaken for a possible weapon of mass destruction by the TSA at each airport which resulted in delays and it nearly caused me to miss my flight on the way home from O'Hare airport.  What I will say is that the DAVE is a ready and willing travel companion and very capably handled the trip.  It even allowed me to enjoy the same music I enjoy listening to at home in my hotel room.
 

 
The DAVE traveled with me everywhere and for the first time, I was able to hear it in some very high-end systems (>$200,000).  From a cold start (sometimes less than 5 minutes of warm up) and with none of the special isolation accoutrements I have at home, it willingly challenged anything that allowed itself to be challenged, both DACs and turntables, and in each instance and without exception, it acquitted itself very well.  If there is a finer source for the money, I have yet to hear it.  If there is a DAC that better embodies the DAVE's ability to portray that "you are there" sense of depth and scale while always remaining non-fatiguingly musical, I have yet to hear it.  As I plan in earnest to build my dream 2-channel system in the next 2 years (when my youngest son leaves for college), I have a much better sense of what I want and the DAVE will be at the center of it all. 
 
As for my favorite rooms at AXPONA, here are a few that stood out (no particular order):
 
1.  Magico 
 

 
When the day comes, I am fairly certain I will be buying a pair of Magicos although exactly which pair is uncertain.  The new S5 Mark IIs were center stage and were every bit as good as I imagined.  Magico relied mostly on analog sources (turntable and reel to reel).  It's clear from the show that the "old guard" audiophiles remain wary of digital.  This was one room where the DAVE had no opportunity to present itself.
 
2.  MSB Select II
 

 

 
The MSB Select II has been spoken of frequently on the DAVE thread and I'm sure MSB is as tired of being compared to the DAVE in the same way that Chord is tired of being compared to something like the Schiit Yggy but the reality is that if you are going to claim to be the best at something then you have to be prepared for the incessant comparisons.  With that said, IMO, no one puts together a room at these shows better than MSB and the experience at AXPONA was every bit as good as the one at CES in Las Vegas in January.  First, they always choose nice intimate sized rooms and then select speakers well suited to the size of the room.  Where everyone else opens up their drapes so that listeners are forced to stare at the glare through the window, MSB draws their drapes and puts in comfortable mood lighting.  Instead of having their product harshly backlit by the sun through the window, MSB has tasteful spot lighting to illuminate their products.  Where most rooms (Chord included) are full of all kinds of gear (turntables, DACs, cable displays, several sets of speakers) that can be distracting, in the MSB room, the only thing you notice is their silver Select II DAC because everything else is a more muted color.  Most importantly, and I cannot state this enough, MSB actually played music that was challenging for DACs to portray well.  There was no "Spanish Harlem" by Rebecca Pidgeon that many rooms were playing.  Those of you who know this piece know that this track can be made to sound good on a Bose system.  How did it sound?  Regardless of the controversy of how MSB reports its measurements, this is a very very good DAC and deserves to be in any conversation of best DAC in the world (IMHO).  Is it worth the $130,000+ they are charging for a fully configured Select II?  I don't know but as it has been rumored that MSB sold out their first run of Select IIs even before they shipped a single unit,  this may have turned out to be a brilliant marketing strategy.  They may not have sold attracted as much attention if they sold this unit for $25,000.  Did I dare ask if I could compare my DAVE to the Select II?  No, I think that would have been in poor taste.
 
3.  Wilson ALEXX
 



This was the grandest room of the show and this large room held almost a hundred seats.  If there was a room that could convincingly present a large orchestra full scale, this was it.  As you can see, they chose to go with the DCS quad stack but the best sound came from the reel to reel.  The Transparent cabling alone listed for more than $100k.  
 
4.  Vinnie Rossi LIO and Harbeth 40.2 monitors
 


 
 
This room probably is in my top 2 favorite rooms at AXPONA.  For those who have not heard the Harbeth 40.2 monitors, which despite their large size can be used as near-field
monitors even in a large room, they are supremely musical and for acoustical music (singer/songwriter, jazz, classical), they are very hard to beat (probably even better than Magicos).  If I don't get Magicos, I will probably get Harbeths (or something similar like Omegas).  Even if I get a pair of Magicos (which are better for large orchestral music and amplified music), I may still get a pair of Harbeths.  The midrange of these speakers are second to none, the bass is potent and no subwoofer is necessary (even with a 25 watt amplifier) and the coherence of all the drivers is simply seamless.  If there was a "you are there" presentation at AXPONA for acoustical music, this was it.  Vinnie was using his LIO, a modular design that can be configured with different options including a delta sigma DAC, phono preamp with tube linestage, headphone amp and 25 watt class AB mosfet amp.  I asked Vinnie if I could connect my DAVE and bypass his internal DAC and he graciously agreed but unfortunately, he failed to outfit this LIO with line inputs because he wasn't anticipating anyone bringing their own DAC along (lol).  
 
5.  CHORD
 


 
To be up front, having the Chord room as a favorite was not a given.  I was not a fan of their 2 channel setup at CES in January and if that was all I had to go by, I probably would not have bought a DAVE.  The Vienna Acoustics speakers they selected for CES I felt were ill-fitted for the cavernous suite they were in and the tuning could have been better.  At AXPONA, it was a different story.  While the MSB room was still the most inviting, ultimately one comes to AXPONA to hear good music and Jay Rein, Chord's US distributor did a very fine job.  Before I entered most rooms, if I was hearing something sound really good, I assumed it was coming from an analog source and in most cases, I was right.  Before I entered the Chord room (not realizing it was the Chord room), I heard a complex jazz piece playing that sounded so spectacularly good that I immediately assumed it must be coming from an analog source because with the exception of the MSB room, no one else had been playing complex and challenging music through their DACs (studio singer/songwriter was the norm).  Upon entering the room and seeing the DAVE on the rack, I still assumed vinyl was playing because the turntable above the DAVE was spinning.  Upon closer inspection, it became clear this masterful portrayal of a very complex piece was being brought to me courtesy of the DAVE.  
 
Apr 19, 2016 at 1:39 AM Post #2,565 of 25,835
In general I find AES to have more air and none as far as I can hear compression vs USB. Happy to report I have found IMHO a new king of USB cables, the Transparent Premium, it is reasonably priced at US $595 RRP for 1 metre, so I imagine you could buy it for a little less. 
 
http://www.transparentcable.com/products/show_product.php?recID=91&catID=3&perfID=1&modCAT=1
 

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