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    Berkeley Audio Design Alpha DAC Reference Series Review

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    Rarely do I hear a component that's truly a game changer, a component that's so good I can't stop listening through it, and a component that's so good it renders much of the competition irrelevant. I can't remember, off the top of my head, the last time I heard such a component. That is, before the Berkeley Audio Design Alpha DAC Reference Series arrived. The Alpha DAC RS, every bit a true game changer, blew me away from the first listen in my system. Since its arrival I've listened to more complete albums and heard more new sounds from old albums than any time in my life. The Alpha DAC RS is so good and such a game changer it may force consumers to reconsider their desire for high resolution music. Sure the Alpha DAC RS can reproduce high resolution music better than any DAC I've heard in my system, but its absolute magic can be heard with standard CD quality 16 bit / 44.1 kHz material. The Alpha DAC RS is without question the best DAC I've heard anywhere when it comes to 16/44.1 playback. I've never heard detail, delicacy, and transparency with my favorite music like I have when listening through this DAC. The Alpha DAC RS is so outstanding that I equate its presence in my system to that of a new pair of loudspeakers. That's correct; the Alpha DAC RS had an impact on my system equivalent to a new pair of loudspeakers. In fact, the Berkeley Audio Design Alpha DAC Reference Series is the most remarkable sounding product I've ever reviewed. [PRBREAK][/PRBREAK]

     

     

    Alpha DAC Reference Series

     

     

    The Berkeley Audio Design team is well known for pursuing perfection of performance and producing peerless products. The original Alpha DAC is considered by many to be the best $5,000 DAC money can buy. The company's subsequent USB to AES converter has been unequalled when it comes to sound quality and electrical isolation in D-to-D converters. Pushing boundaries and shooting for unparalleled performance is not an easy task and frequently takes quite a bit of time. Such is the case with the Alpha DAC Reference Series. According to Berkeley Audio Design's Michael Ritter, the Alpha DAC RS contains proprietary parts that didn't exist prior to the creation of the DAC. During the initial design stages of the RS 'Berkeley' asked several manufacturers to build certain parts to its specifications. All but one of the companies said no because it was difficult to build and there was no market for such impeccably spec'd parts. In addition the cost of the parts ended up being 40x greater than parts used in the Alpha DAC Series 2 or the Alpha USB.

     

    Internal parts are but one piece of the Alpha DAC RS puzzle. The other major piece is intellectual property. 'Berkeley' previously made a $5,000 DAC sound as good as or better than many DACs costing several times more money. To do this requires the intellectual know-how that other DAC manufacturers, who just assemble parts and follow chip manufacturers' app notes, simply don't have. Talking to Berkeley's lead Engineer Michael "Pflash" Pflaumer, it's clear that the Alpha DAC RS contains engineering wizardry and original ideas that the previous 'Berkeley' products don't contain. The Alpha DAC RS isn't a sibling of the original Alpha DAC, rather it's a close cousin. Both DACs have the same designer, but the Reference Series is so above and beyond that it's in a league of its own. This time, using a mix of proprietary parts and vast intellectual property, Berkeley Audio Design has created a $16,000 DAC that may be the best in the world at any price.

     

    One of the strengths of the Alpha DAC RS that make it such a great component is its ability to playback standard resolution (16/44.1) material better than any DAC I've heard. According to many DAC designers, playback of standard resolution is where the rubber meets the road, not only because the vast majority of music is released at 16/44.1, but because it takes considerable expertise to develop digital filters for CD quality material. This is where Berkeley Audio Design excels. Michael "Pflash" Pflaumer's digital filter mastery is the stuff of legend in high end audio. One only needs to listen to the Alpha DAC RS at 16/44.1 to hear Pflash's superior skills shine. There's no chip a manufacture can purchase and implement that comes close to replicating 'Berkeley's' custom filtering technology.

     

    Now for the fun part, telling the world how the Alpha DAC RS sounds with some of my favorite music. The RS single handedly sent me into a Natalie Merchant binge that lasted a couple weeks. I couldn't stop listening to Natalie's new self-titled album and her Motherland release from 2001. Both albums are the standard issue, released at 44.1 kHz and not remastered. The detail and delicacy brought out by the Alpha DAC RS on both albums is unparalleled. For example, the track Maggie Said from the 2014 Natalie Merchant album has incredible separation and delineation between instruments. So much so that I can't get this good of sound even through my Sennheiser HD600, Audeze LCD-XC, or JH Audio JH13 in-ear monitors. The first track on the album, Lady Bird, opens with a delicate drum roll. Listening through other DACs and even through headphones, the drums tend to sound like paper, as if the drummer is striking a couple sheets of loose leaf paper from the Dollar Store. Through the Alpha DAC RS it's possible to hear the texture of the drum heads. I'm willing to bet any competent drummer could identify the exact drum kit, and even the sticks used by the drummer, after listening to this track through the Alpha DAC RS.

     

    Continuing my Natalie Merchant kick, I spent countless hours listening to her Motherland album. Track two, titled Motherland, features a guitar, banjo, accordion, and some of the richest sounding vocals Natalie has ever produced. I've never heard this track sound so good and Natalie's vocals sound as wonderful as I have when listening through the Alpha DAC RS. The delicate accordion comes and goes in the background landing like a butterfly with sore feet. The banjo and guitar have terrifically distinct sounds that can be heard even at the lowest volumes through the 'RS'. In fact, I've never heard a DAC excel more at low volumes than the Alpha DAC RS. Listening to the entire Motherland album I kept the volume at such low levels that the crickets outside my listening room drowned out the quiet passages more than a few times. This is in stark contrast to listening through some DACs that lack resolution and force the listener to turn up the volume a notch for every track. After an hour of listening one's ears are tired and ready to retire for the evening. My experience with the Alpha DAC RS couldn't be more the opposite. I never wanted to stop listening once during the entire review period.

     

    Classical music isn't traditionally one of my favorite genres. However, when a component like the Alpha DAC RS is placed into my system I feel the need to listen to all of my music as if it was all new. During this review I frequently said to myself, "I wonder what X or Y sounds like through the RS." It was as close to the kid before Christmas feeling as I could have as an adult. Thus, I played the Kansas City Symphony's Britten's Orchestra recorded and released at 24 bit / 176.4 kHz by Reference Recordings. This album demonstrated the Alpha DAC RS' ability to reproduce transients like no other DAC I've heard. About 4:20 into the track Passacaglia things get real interesting. The horns start out quite delicate augmenting the string section that is building the scene. By 5:30 into the track the horn section is leading the way in the most transparent sounding symphonic reproduction I've yet heard. At 5:45 into the track the deep horns start to snap and the drums create an incredible sounding crescendo. Then all is quiet with the exception of a soft and delicate string section in recovery from the event that just took place. Throughout the track the Alpha DAC RS appears to only reproduce the music. There's no memorializing of an event after it happens and there certainly are no rounded edges of transients. This DAC starts and stops like no other.

     

    Organic and transparent is how I describe listening to Jack Johnson's Brushfire Fairytales through the Alpha DAC RS. This isn't the most well recorded album, but through the 'RS' something magical comes out of each track. The Alpha DAC RS isn't adding anything or forcing a Hi-Fi signature on the album, rather more sounds and nuances are coming through now than ever before through any other DAC. The track Flake features a very soft steel drum in the left channel and acoustic guitar in the right channel at the beginning. The guitar sounds incredibly organic and realistic while the steel drum smoothly floats in the background with its soft presence. Through less resolute DACs I frequently turn up the volume during this part of the track because I can't hear the steel drum enough for my liking. Through the Alpha DAC RS the steel drum magically comes through appropriately soft but appropriately present. It's really magical to hear these seemingly antithetical (soft / present) characteristics come through with delicacy and transparency like never before.

     

    Closing out the review period I wanted to push the bass limits of the Alpha DAC RS. What I had heard up to this point was incredibly tight and deep bass from more traditional sources like rock and roll and jazz. It was time for a little Jay Z, one of my favorite hip hop artists of all time. Jay Z's MTV Unplugged (with the Roots band) is a great sounding album but it doesn't have the bass of the Magna Carta... Holy Grail album. After warming up with MTV Unplugged I switched to track Holy Grail featuring Justin Timberlake. A synthetic piano and somewhat synthetic sounding vocal start the track before a huge bass beat kicks in. Under the right conditions I'm sure one could blow woofers into a listener's lap. Fortunately the track isn't just a bass monster / demo track. The deep beat is great as are the lyrics with a sample of Nirvana's Smells Like Teen Spirit. The Alpha DAC RS puts out the deepest and tightest bass of any DAC I've yet heard. Listening to this deep tight bass gave me a similar feeling to listening to soft and present steel drums from Jack Johnson. The deep bass was omnipresent as it was supposed to be, but it wasn't overpowering. Jay Z's and Timberlake's vocals were clearly audible and intelligible as were the plethora of other sounds going on in the track. Chalk this magic up to the Alpha DAC RS and its brilliant designer Michael "Pflash" Pflaumer and the rest of the 'Berkeley' team who took part in creating the best DAC on the market.

     

     

    Conclusion

     

     

    The Berkeley Audio Design Alpha DAC Reference Series is a DAC for the ages. Delicacy, detail, and unparalleled transparency are hallmarks of the RS. Reproducing soft yet present background instruments as clearly as the lead guitar is something only the Alpha DAC RS has done in my system. This DAC is capable of hooking the listener in to hours long listening sessions even at the expense of getting other work done. In other words, the Alpha DAC RS reproduces addicting sound. The Reference Series is what the term "game changer" was meant to describe. It's a PCM only DAC that renders most other universal DACs on the market irrelevant. Irrelevant because they cost more and don't sound as good. A DAC that can make standard resolution (16/44.1) material sound as good as high resolution is a true game changer. The advanced digital filtering algorithms created by Berkeley Audio Design do exactly that with 16/44.1 music. I know of no DAC available today that can reproduce Redbook CD content as well as the Alpha DAC RS. Period. If I could afford it and my job allowed it, the Alpha DAC RS is the only DAC I'd use for the foreseeable future.

     

     

     

     

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    Product Information:

    • Product - Berkeley Audio Design Alpha DAC Reference Series
    • Price - $16,000
    • Product Page - Link

     

     

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    Where To Buy:

     

    The Audio Salon

     

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    Ciamara

     

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    Well, I once read something to the effect that if you take all of the reviews of high-end equipment seriously, then you would, logically, be forced to assume that the sound of such equipment long ago surpassed actual live music performance.

     

    I don't log in often but I enjoyed reading this review, and all the comments. It makes me think I need to perhaps consider something or other Berkeley as my Dac.

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    Chris,

     

    I see that you used the new Signature Series Rendu. Had you reviewed that before? I'm considering acquiring that, but you really didn't have anything to say. Care to give your impressions?

    thanks,

     

    Richard

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    My only comment is that for $16,000 USD, it damn well better sound good... No I will not be buying one.

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    My only comment is that for $16,000 USD, it damn well better sound good... No I will not be buying one.

     

    Yes indeed :) It could sound even better, however, if it cost twice as much, as the LH Da Vinci Dual DAC does.

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    I have the Aplha RS which has now replaced my Alpha DAC Series 1. I think Chris has really captured well the excitement that the Alpha RS DAC can deliver when listening to music. I can't articulate the sound of the Alpha RS DAC as well as Chris can but it is almost irrelevant in my view when you hear recorded music that sounds 'live'.

     

    I do enjoy listening to recorded music at realistic levels but the strange thing with this DAC, and I am sure all great systems, is the ability to reduce the level whilst still enjoying an open window to the recording. The Alpha DAC absolutely excells in this respect and in many ways is the most surprising thing I have found with this DAC.

     

    Thanks for an informative review and I am thrilled with the way my system is now delivering a 'live music' experience every evening in my lounge!

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    I have the Aplha RS which has now replaced my Alpha DAC Series 1. I think Chris has really captured well the excitement that the Alpha RS DAC can deliver when listening to music. I can't articulate the sound of the Alpha RS DAC as well as Chris can but it is almost irrelevant in my view when you hear recorded music that sounds 'live'.

     

    I do enjoy listening to recorded music at realistic levels but the strange thing with this DAC, and I am sure all great systems, is the ability to reduce the level whilst still enjoying an open window to the recording. The Alpha DAC absolutely excells in this respect and in many ways is the most surprising thing I have found with this DAC.

     

    Thanks for an informative review and I am thrilled with the way my system is now delivering a 'live music' experience every evening in my lounge!

     

    Just wondering how long it took you to get one, from order date till receipt. Here it's many months at this point. I'm guessing that you placed your order in early August. At that time Berkeley Audio was quoting a 10 week order to ship.

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    Hi Steve, I had been talking to my dealer who is based in Switzerland ( no dealer in UK) since learning of this new DAC some months ago. He mailed me in September to say he was about to take delivery and I said I'd have it. There was a delay as I have been on holiday. So I'm not sure what the timescales are if the dealer has to order for you.

     

    I really think it will be worth any wait!

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    I have the Aplha RS which has now replaced my Alpha DAC Series 1. I think Chris has really captured well the excitement that the Alpha RS DAC can deliver when listening to music. I can't articulate the sound of the Alpha RS DAC as well as Chris can but it is almost irrelevant in my view when you hear recorded music that sounds 'live'.

     

    I do enjoy listening to recorded music at realistic levels but the strange thing with this DAC, and I am sure all great systems, is the ability to reduce the level whilst still enjoying an open window to the recording. The Alpha DAC absolutely excells in this respect and in many ways is the most surprising thing I have found with this DAC.

     

    Thanks for an informative review and I am thrilled with the way my system is now delivering a 'live music' experience every evening in my lounge!

     

    Are you using a preamp or running the RS straight to your amp?

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    I bought a TAD DA-1000 DAC some weeks ago but considering the enthusiastic review of Chris, I could wonder when it was not throwing money away even when I am very impressed by the TAD's performance also on 16/44.1!

     

    Indeed DACs are likely the most frustrating matter for HiFi amateurs as every day comes with a new killer model in every segment of the market. I add to the list of the models mentioned in some precedent posts: NAGRA HD DAC, Soulution Audio 560 DAC Gryphon Kalliope...

     

    Dear Typhorn, as you say, this hobby can be very frustrating: you buy a TOL gear and the next day to hear about a new one supposed to be even better !!

     

    I am myself right now having to decide which DAC to purchase to feed my new tube headphone Amp Eddie Current 4-45.

     

    I have now in my list :

     

    - TAD DA1000

    - NAGRA HD DAC

    - Berkley Design reference DAC (for it's suposed superior sound with 16/44)

    - Lampizator BIG7

    - Total-DAC D1

    and on a more reasonable pricing level:

    - AMR DP-777 (the next SE version to come in December)

     

    Re the TAD DA1000, since you have one, I was wondering if the fact that 24/192 is downsampled to 24/96 isn't a problem. This 96 kHz limitation is quite surprising for such an expensive device ! Also, how does it handle DSD ? and 16/44 ?

    and last question: if the headphone amp useable or more an afterthought feature ?

     

    thanks for your advices

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    Hi Steve, I had been talking to my dealer who is based in Switzerland ( no dealer in UK) since learning of this new DAC some months ago. He mailed me in September to say he was about to take delivery and I said I'd have it. There was a delay as I have been on holiday. So I'm not sure what the timescales are if the dealer has to order for you.

     

    I really think it will be worth any wait!

     

    I am happy that you can get one in europe. Indeed, I thought that the berkley cannot anymore be imported because of some stupid enviremental EC rules.

     

    could you provide me with the name/contact of your dealer in Switzerland ?

     

    thanks

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    I wonder if Chris or anyone else who has experience with both DAC's can comment on the comparison between the Berkeley Reference DAC and the Luxman DA-06.

    Thank you.

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    Chris,

     

    "One of the strengths of the Alpha DAC RS that make it such a great component is its ability to playback standard resolution (16/44.1) material better than any DAC I've heard. According to many DAC designers, playback of standard resolution is where the rubber meets the road, not only because the vast majority of music is released at 16/44.1, but because it takes considerable expertise to develop digital filters for CD quality material"

     

     

     

     

    what cd transport did you use for red book cds?

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    Are you using the Alpha USB SPDIF converter with the RS?

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    Can anyone compare its volume control to a high end preamp (e.g. ARC Ref5SE or CJ Gat/Act2, etc)? What does Berkeley recommend?

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    Chris, did you try the DAC playing straight into your poweramp? How did it compare to going through the Pass Labs (I presume you used the integrated amp as a pre).

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    Hi everyone i'm not native english I WANT to share my story. I saved money to spend in hi fi system.. I bought many products in 2014 , I want to upgrade my system with focal speakers so I bought Berkeley Audio Design Alpha DAC Reference, I couldn't tell the differences at the first 3 days , after 1 week I found the sound in bigger than my hugo dac imaging better , hugo's sound realistic also Berkeley it's not only realistic but also live and clear voice . but not huge performance over hugo, I don't know but it seems something wrong with this dac .

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    Well PT7, may be the problem is with the HUGO :-)

     

    Indeed, I have myself a HUGO, and each time I try a desktop DAC to replace my HUGO I find the HUGO as good as (or better) than those more expensive and much bigger DAC. This is how good is the HUGO ! It is quite frustrating not to be able to find a clear upgrade to the small HUGO ! ;-)

     

     

    On another subject, I will be very interested to hear a comparaison between the berkley reference and the NAGRA HD DAC. They are indeed in the same category, but use a totally different approach:

     

    -> Berkley can only play PCM while NAGRA convert everything to DSD ! which approach is right ?

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    Hi Chris,

    Could you please share your opinion about sound difference between the Chord QBD76HD and Berkeley RS.

    I have the Chord QBD76HD now and planning to upgrade to new Chord DAVE or Berkeley RS. Curious to hear if anybody has done a direct comparison between them.

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    DarthMaul - I'd be careful about reaching any conclusions on how the Chord DAVE will compare to the Berkeley Reference based on a comparison to the QBD76HD. The DAVE is supposed to be a very significant step forward in performance and produces a far more accurate conversion of the digital signal with its 166 DSP cores and 164,000 tap digital filter. I expect the DAVE to be a game changer once it's released based upon Chord's DAC history, the technology it is using and Chord's claims about its performance. I have found that Chord historically demonstrates a very high degree of credibility in meeting and even exceeding the high expectations that they set on their DACs.

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    Actually, I didnt like the hugo. I preferred the Qute (HD and EX) with LPSU. Many preferred the QBD to the Hugo as well. Others strongly disagreed and for them the Hugo was the beez kneez.

     

    Also, gamechanger as a term is overused. I have found that there are MANY paths to audio nirvana, no-one holds a monopoly.

     

    The Dave siugnals lots of latest tech and seems very appealing on paper, but I reserve judgement till its out.

     

    Although I have not heard the Berk Ref, many say its very, very good.

     

    There is all to play for, so let the games begn!

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    Thank you, audio.bill.

    But what's your preference between currently available DACs from the Chord and Berkeley? These companies have very different approaches to the digital filtering, upsampling and conversion techniques.

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    winson - Of course you are correct in that no one solution will be everyone's unanimous favorite, since we all hear differently and have our own expectations and preferences. I haven't heard the Berkeley Reference yet either, and have read that the wait time to get one is running six months and counting for some early buyers. It is supposed to be a superb performer by all reports. Will also be interesting to see how some of these top DACs compare to the Lampizators. It should be interesting, and only time will tell. Stay tuned!

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    Bill,

     

    I didnt mean it that way (taste). I meant that manufacturers take radically different design paths and many of them still end up sounding top notch. Many ways to skin a cat.

     

    I have found that FPGA works well for PCM and much less well for DSD, for example. For PCM, I have heard DS, R2R and FPGA implemenations all work well.

     

    Dave could end up being a PCM Champ, but I have lower expectations for DSD, given that I am yet to be convinced by FPGA DSD. Perhpas this will change though..

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    Thank you, audio.bill.

    But what's your preference between currently available DACs from the Chord and Berkeley? These companies have very different approaches to the digital filtering, upsampling and conversion techniques.

    I haven't heard the Berkeley Reference myself, there's a long waiting list so they're hard to come by. However from multiple reviews that I've read and comments from dealers the Ref is supposed to set a new standard in digital playback, so I would expect it to beat the current Chord DACs. The DAVE has yet to be released so we'll have to see how it compares but my expectations for it are very high. Hopefully its sonic performance will match the high level of technology that Chord has designed into it.

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    I have heard the Berkeley Alpha Reference but in a system completely different from mine and was blown away. Everything Chris said in his review is as is. So from my point of view, there is no doubt Berkeley Alpha Reference is in a completely different league than my Chord QBD76HDSD. But I'll probably wait to hear the Chord DAVE first before deciding whether to consider another upgrade. At some point, one has to stop spending and decide if there are better priorities in life, I guess.

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