dCS Vivaldi Apex D/A processor Page 2

Preparing to listen
With Giolas temporarily grounded by COVID, installation of the Vivaldi was entrusted to Definitive Audio's Gary Bruestle. We began by re-spacing a shelf on the Grand Prix Monza to accommodate three Vivaldi components plus equipment supports.

Lately, an Innuos Statement Next-Gen music server running Roon has been handling file playback on my system. I wanted to sample the Innuos proprietary playback software (which I'll discuss in a future follow-up review), but it wasn't yet equipped to work with the Vivaldi Apex DAC. Because Innuos prefers USB to Ethernet as its optimal way of sending files to DACs, we installed a USB cable between the Innuos Statement and the Vivaldi Upsampler and Ethernet cables between the Nordost QNet Ethernet switch, Innuos, and Vivaldi Upsampler Plus. Switching cables between the Vivaldi and Rossini Apex DACs and Clocks while maintaining distance between interconnects and power cables during comparisons was loads of fun.

Gasp!
Every month, I welcome fresh opportunities to find the right words to convey what I feel when I sit before my system, close my eyes, and listen to great music. But there are times when reactions are so extreme, the awe so overpowering, that eloquence cedes to one-word (or even nonword) exclamations.

Beginning with the Brahms Double Concerto with violinist Anne-Sophie Mutter and cellist Pablo Ferrández, backed by the Czech Philharmonic under Manfred Honeck (24/96 WAV, Sony/Qobuz), my eyes widened as I struggled to take in the size and weight of what I was hearing. I was struck dumb by the impact of that sound and in disbelief at experiencing it in my own music room (and not from a prime seat in a concert hall). I could only utter a single, elemental word: Wow! Was this how gaggles of awestruck teenagers felt standing in front of a gyrating Elvis Presley, screaming? Is this what young women felt at a concert by Liszt? Brahms never attained that kind of popularity, but the deep sense of loss and longing found in much of his music speaks to my every cell. When Brahms's music gets the performance and recording it deserves and is played on a proper sound system, I am catapulted to lonelier times but also transported by beauty to bliss.

Caroline Shaw's superbly recorded The Wheel (24/192 WAV, Alpha 881), our February Recording of the Month, provided another indication that something unique was happening with the Vivaldi Apex. I've written at length about the importance to me of air and space in music reproduction. I've rarely experienced as convincing a depiction of these attributes as in Vivaldi's rendering of this album's "Boris Kerner" for cello and flowerpots. As the timbres and pitches of flowerpots changed in color and intensity, and images shifted position in the soundstage, fantastical images flashed before my eyes. This wasn't a case of being transported to the venue. The excitement was right here in my listening room, where, more than ever, I wanted to stay for a long, long time.

I had to return to The Wheel several times after we decided to expand my original 300-word review into a full-page Recording of the Month piece. As I played it and other music I've never used before in a review, I experienced a newfound ease and flow in the music that made listening a joy.

Compared to Rossini Apex
Two days after my friend, who was staying with us, tested positive for COVID, I awoke to an "uh oh" mix of mild symptoms and internal alerts. I immediately resolved to quarantine myself in the music room, return to reference tracks, and spend as much time as required comparing the Vivaldi Apex/Upsampler Plus/Clock system to the Rossini Apex and its Clock. Only after putting the Vivaldi trio to the test would I subject myself to testing. I listened as if my life depended on it.

First, I streamed part of the second movement of Shostakovich Symphony No.11 from the DG recording Dimitri Shostakovich Symphonies Nos.4 & 11 with Andris Nelsons conducting the Boston Symphony Orchestra (24/96 Qobuz and 24/96 MQA Tidal). This movement builds from a sense of foreboding to an assaultive barrage before settling into chilling silence. It would try any system.

The Vivaldi Apex's depiction of dark and turbulent music in particular was superior to any I've experienced on my system. The air around the snare drum, the clarity of individual instruments in the cello and double-bass sections, the profundity of silences—all amazed me. In contrast, the Rossini Apex depiction seemed lighter and less substantial, with smaller images. The emotional impact of the Vivaldi's pounding bass drum dwarfed the Rossini's. String entrances were less vivid via the smaller single-box DAC, the midrange wasn't as rich, and the top was a mite brighter and noisier. Remember, in my experience at least, the Rossini Apex DAC is unrivaled in its price range, and it ain't cheap.

On Echo, with soprano Ruby Hughes and pianist/composer Huw Watkins (24/96 WAV, BIS 2568), the piano seemed smaller with the Rossini, and Hughes's voice had a brighter edge. Turning to Lou Harrison's Concerto for Violin and Percussion Orchestra (24/48 FLAC, Qobuz/Hyperion)—a fabulous, gamelan-inspired composition that caused one attendee at AXPONA to storm out of the room yelling "That is not music! Next time play music!"—the soundstage created by the Rossini lacked the Vivaldi Apex's ultimate openness. On Patricia Barber's Clique (32/352.8 WAV) and Higher (24/352.8 MQA, Tidal), bass was less immediate and less rich, colors less saturated, Barber's voice less distinct.

Let's switch to positives. On Diana Krall's "Autumn in New York" from This Dream of You (24/44.1 MQA, Impulse!/Tidal), the Vivaldi Apex rendered the guitar larger and more colorful. The Vivaldi Apex conveyed Krall's intimate delivery as though she were singing to me alone, and her voice seemed lifelike. In Grant Green's title track from Idle Moments (24/192, Blue Note/Qobuz), every instrument seemed larger, clearer, and more impactful via the Vivaldi.

I wasn't feeling up to rock music, but I ventured as far as the first tracks of Roger Waters's Amused to Death (24/192 MQA, Columbia/Tidal) and was wowed again by the Vivaldi Apex's ability to harness detail in service to emotion. In Yosi Horikawa's fascinating, gimmicky "Bubbles" (footnote 3) (16/44.1, Tidal), I felt surrounded by the dropping balls at the beginning—uncanny. In "Twilight Song," from bassist Charlie Hayden and pianist Kenny Barron's sublime live recording Night and the City (16/44.1, Verve/Qobuz), every note of the piano sounded like a precious pearl. And on Harmonia Mundi's wonderful period-instruments recording of Beethoven's Archduke Trio, with violinist Isabelle Faust, cellist Jean-Guihen Queyras, and pianist Alexander Melnikov, the sound was so natural and flowing that I closed my eyes and thanked the universe for the glory of it all.

Conclusion
If someone were to give me $100 for every review that extols "state-of-the-art" equipment, I'd have enough money to buy a house on the water with a music room fit for a queen. So, rather than falling into that trap, let's talk instead about music.

Recorded music has never sounded as full, rich, flowing, rewarding, and natural as with the Vivaldi Apex. It is rare, in a home listening room, to experience anew the full impact of great orchestral music heard in a concert hall. But the Vivaldi Apex DAC, Vivaldi Upsampler Plus, and Vivaldi Master Clock together have made that possible, repeatedly. I haven't heard every DAC on the market—certainly not in my listening room, where all other variables are known—but nothing I have encountered in stores or at shows has come close to the Vivaldi Apex. Every listening experience has been extraordinary. The finer and more concentrated an artist's focus, the finer the Vivaldi Apex system sounds. It conveys inspiration and genius like no other equipment I've heard.

I hope that you get to hear and enjoy it, in a system worthy of its company. If you're fortunate enough to own one, you will have read this review with a knowing smile.


Footnote 3: Both "Bubbles" and Krall's voice were played by exhibitors at the 2022 Warsaw Audio Show. Reference tracks make the rounds.

COMMENTS
MhtLion's picture

Amazing review! As a follow up review at some time, can you compare connecting Vivaldi Apex directly to power amps vs through the preamp? Because after all that careful engineering went into a set of $90k boxes, I think many people will want to bypass the preamp. Does Vivaldi have an adjustable gain/impedance output? That will certainly help to connect directly to power amps from different brands.

Jason Victor Serinus's picture

I confess on this one. With Rossini and Vivaldi pre-Apex, there was no question that using the D'Agostino Momentum HD preamp enhanced color and moved the presentation closer to the real thing. But I did not do this with either Rossini Apex or Vivaldi Apex. Shall confer with Jim Austin. Beyond that, thank you for the strokes.

MhtLion's picture

Thanks for the comment. In my limited experiences, the gain/impedance matching between the source and the power amps was critical. Obviously, a preamp from the same brand is usually the most optimal on this regard. I'm hoping the highend DAC manufacturers to start to incorporate adjustable gain/impedance so more people can connect directly. Again, thanks for a great review!

MhtLion's picture

Duplicated posting removed. Stereophile.com seems prong to this issue, but there is no delete button.

John Atkinson's picture
They are in the server's images folder but for some reason they are not appearing on the Measurements web page. We are looking into the problem.

John Atkinson
Technical Editor, Stereophile

John Atkinson's picture
It was due to the image filenames having a mix of upper-case and lower-case letters. Never knew that could be an issue :-)

John Atkinson
Technical Editor, Stereophile

georgehifi's picture

Ring dac architecture.

Is a Ring Dac based around an R2R ladder architecture, as that's what it looks like from the photo
https://www.stereophile.com/images/323-DCS_08-600.jpg

Cheers George

John Atkinson's picture
georgehifi wrote:
Is a Ring Dac based around an R2R ladder architecture, as that's what it looks like from the photo?

IIRC, the Ring DAC is a 5-bit R-2R topology operated with massive oversampling.

John Atkinson
Technical Editor, Stereophile

RichT's picture

I think there is an added element - which bits are handled by which resistors is reconfigured on the fly to avoid systematic errors in resistor values producing distortion.

ygbae's picture

Hello, John. I understand that the Ring DAC uses a 5-bit delta-sigma modulation for the noise shaping. It is superior to 1-bit delta-sigma modulation because 1-bit DSM scheme makes comparatively huge noise shaping. It is my understanding dCS doesn't use the term "delta-sigma modulation" because it is the terminology usually used for 1-bit modulation. That's how I understood by reading various sources, but I am not 100% certain on this, so could you kindly double check on this matter?

jmeyersnv's picture

Thank you, Jason, for a wonderful, and concise, review of the Vivaldi Apex system, including how its performance differs from the Rossini one -- which, as a financially-constrained consumer, I especially appreciated.

Undoubtedly, Stereophile will be reviewing the new dCS Bartok Apex; hopefully, due to your familiarity and knowledge of dCS' more expensive units, you'll be chosen to review that component as well. For many Stereophile readers (myself included), the Bartok Apex's price puts it within a stretched range of prospectively affordable whereas the Rossini Apex -- particularly with its companion clock -- makes a purchase of that unit, well, aspirational; consequently, a comprehensive review of the Bartok Apex would be especially valuable to us.

I don't think I am alone in requesting that the Bartok Apex review not only identify its strengths but also contrast its performance with the Rossini Apex's and explain the engineering bases of their differences.

Many thanks for your, and Jim Austin's, consideration of this request. This is one of those times where I am not sure Stereophile's staff appreciate just how valuable your magazine's review will be.

Best regards,

Jonathan

Jason Victor Serinus's picture

Since Herb Reichert has been using a Bartók for a good year - maybe longer - he is the most appropriate person to review it.

I will do a Vivaldi Apex follow-up in which I will discuss the sound of its internal volume control vs. the sound with an external preamp in the Vivaldi's price range. But I no longer have the Rossini Apex in my system. Hence, if a Bartók were to come my way, it would be put against Vivaldi Apex. I'm not sure that makes sense. To be discussed internally....

cognoscente's picture

Here we go again:

a review of a Bugatti WM16 Mistral

No one here is ever going to buy that car, and if so, you might wonder why? What need to be compensated? And it is of course so called "new and" bordering on certainty "wrong money".

"Recorded music has never sounded as full, rich, flowing, rewarding, and natural as with the Vivaldi Apex" the review says. Yes sure I believe that. But the question is how much more, better (in direct comparison to a 10.000 dac or 5.000 or 2,500 dac)? It's about fairness and proportion! That is of course subjective, but still.

I read on another website the direct comparison between the new Hegel P30A / HD30A (26,000 euros) and the Hegel H590 (11.000 euros and with streaming and dac) and what is the difference of a set that is more than 2x more expensive? "Not a huge amount, and only audible on some pieces of music". Huh? Really? Okay!

Btw in another older direct comparison between de Hegel H590 and the Hegel H390 the Hegel H590 sounded indeed better. Yeah!, this conclusion of the reviewer was to be expected, of course but the reviewer was also so fair to say "but only a tiny fraction".

Anyway I prefer to read a review and directly compare of 5 DACs in the price range 2,500 - 4,000. That will be useful to us (instead of we all here dreaming of a big castle in France).

Jason Victor Serinus's picture

The differences any reviewer can hear are directly related to equipment quality, set-up considerations, and room acoustics. The "little" one reviewer can hear could be far greater in another system.

In my reviews, I intentionally describe everything I use in the review, including cables, equipment supports, room treatment, and set-up considerations. The reasons are simple. Not only do I wish to ensure that equipment I compare is set up equally (as much as what I have in my possession allows), but I also want readers to know everything that contributes to the sound I hear. What you may not realize is that I am constantly upgrading my system and room in order to better be able to hear micro and macro differences.

Ultimately, it's a case of trying the product for yourself in your own system. My friend, Scott, just did this with four preamps in the $3000-$4000 range, two of which are current Herb Reichert favorites. Guess which two preamps came out on top? Okay, everyone is now wondering -- it was the Lab 12. But while it may be the best sounding preamp in Scott's system, with his speakers and his low-powered amp and his DAC in his room, it may not be the best sounding preamp for you in your room with our equipment.

Reviews are guideposts; they are not absolutes. There is no absolute sound.

tuckerss's picture

I was so happy to see you bring up Roberta Flack. Her early albums are some of my all time references. They are not sonic showpieces, some of the tracks like 'The First Time Ever I Saw Your Face' and 'Killing Me Softly With His Song' are extrodinarily complex and beatiful pieces. They showcase how expressive and dare I say how honest a system can be. Deep detailed sound stages with precise localizations, stand up bass and drums, subtle cymbal work, with such expressive musicianship. And high resolution files do bring out more.

I do find that the 50th Anniversary releases (such as the one you mentioned) while a bit cleaner with less tape his etc, also seem to simplify her voice a bit, and it also sounds like maybe they applied a bit of pitch correction to her voice, which she definitely does not need! For me the preferred version is the 24/192 version releasd by Acoustic Sounds in 2014 for First Take, and the 2012 HDTRacks version for Killing me Softly. But wonderful music regardless!

Jason Victor Serinus's picture

A lot.

ok's picture

..but 44.1 redbook experience has an uncertain something especially when played from a cd transport.

georgehifi's picture

In hi end audio "If you have no quite, you have no loud" That's space between the music.
Most streamed/downloaded stuff is compressed because of the release versions they use, which are the later compressed ones.

Pre 2000 versions were not compressed so much as post 2000 so you get more DR and more breathing space between the notes. Just check out the difference in DR on all the "Yellow Brick Road" releases
https://dr.loudness-war.info/album/list/1/year/asc?artist=&album=Goodbye...

Compressed stuff should be binned, and the maniac that pushed "Wall of Sound" compression recording shot also, he was Phil Spector.

Cheers George

Jason Victor Serinus's picture

Have you listened to any new hi-rez recordings, George? Virtually all hi-rez classical recordings I review, with the exception of a few, exhibit a high dynamic range. Even on chamber music.

As for your rather dismissal of Phil Spector's achievement, here's another take: https://www.wbru.com/The-Wall-That-Wasn-t-Flat.

georgehifi's picture

"Have you listened to any new hi-rez recordings, George?"

Yes some are not compressed especially the classical ones, but many/most other genres are compressed, and you (especially being a reviewer) need to pull your finger out, and to compare these to the non compressed version releases, like this, and stop being even slightly protective of compressed music.
https://dr.loudness-war.info/album/list/1/year/asc?artist=&album=Goodbye...

Cheers George

georgehifi's picture

"For producer Phil Spector, the “final test was [always] to listen to the song in the car.”

This says it all!!! the only place compression works is in the car where the background noise is high!, or in the street with walkmans, ipods, iphones, and with background music, etc etc.
Not in the quite of your hi-end audio room.
Get with it Victor or join the lo-fi club, and start reviewing car stereos, ipods etc!

Cheers George

Meribell's picture

Very interesting review!!

Could you please give the evaluation, how much we will lose in sound quality in case removing Vivaldi Master Clock from the system.
And how much in case removing the Upsampler as well, just Vivaldi Apex DAC alone.

Can you compare these levels with EMM LAbs DV2 DAC?

David from Switzerland's picture

According to the information I have from dCS, the Ring DAC is NOT an R2R DAC, since all 96 resistors (48 per channel) are of equal value (i.e. not a ladder).

Greetings from Switzerland, David.

John Atkinson's picture
David from Swit... wrote:
According to the information I have from dCS, the Ring DAC is NOT an R2R DAC, since all 96 resistors (48 per channel) are of equal value (i.e. not a ladder).

In a conventional 5-bit R-2R ladder DAC, the resistors have the following values: R, 2xR, 4xR, 8xR, 16xR, and 32xR, ie, each resistor has a different value. I believe that what dCS is doing is using multiples of the same-value resistor rather than different value resistors and the "mapping" algorithm moves each resistor to a different place in the ladder for each sample. That way any errors in the actual value of each resistor are averaged out - ingenious!

John Atkinson
Technical Editor, Stereophile

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