Berkley Alpha Reference DAC (mini) Review

Mike

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Today I was fortunate enough to have a broken in Berkley Alpha Reference DAC in my system. A friend traveled to see me and brought it with him. Visually, the DAC is quite attractive with its slanted face and overall layout. It also has some surprising weight to it.

We had planned to connect the Berkley Alpha Reference DAC to the Lumin via BNC. However, I didn't have a male to female BNC cable. The only other option was to use TOSLINK from my Oppo 105D. FAR less than ideal, but using the Oppo as a transport was our only option. Recognizing that the Berkley was seriously handcuffed from sounding its best, we proceeded to listen.

We started out playing Rodrigo Gabriela's acoustic rendition of Stairway to Heaven (redbook). It was immediately apparent that the Berkley was a tonality champion. The overall richness and sweetness of the guitar was extremely palatable. The Berkley had a wonderful sense of imaging and dimensionality. Bass was excellent as well. Balanced, yet defined. Noticeable, yet blending seamlessly with the rest of the music. Nothing sounded out of place.

We later moved on to Natalie Merchant Tigerlily (redbook), where the Berkley brought a laser like focus to Natalie's vocals. Backgrounds were quiet. Details were there in spades, but yet, it doesn't sound detailed. Musically accurate is more like it.

We then moved on to First Aid Kit Stay Gold (redbook). The overall tonal sweetness of the Berkley shined. The more complex the music, the better the Berkley was able to sort everything into its proper place in space.

Unable to play high res files, the obvious comparison to the Lumin S1 couldn't be properly conducted. However, on redbook, the Lumin sounded a little warmer in overall tone. The Berkley a little sweeter, with slightly better tonality, bass and dimensionality. However, the differences were negligible on some recordings, such as Natalie Merchant's Tigerlily. I would love to have heard how the Berkley and Lumin compared with high res files. Maybe when I get the right BNC cable my friend will travel back for round 2. :)

Downsides to the Berkley Alpha Reference DAC? Well, nothing sonically that I heard. The only limitations I can think of are: A. Price (but here is a perfect example of getting what you pay for), B. Those in the DSD camp will find the necessity to convert all DSD files to PCM less than desirable. I was told that Berkley recommends actually converting DSD to PCM and saving the files rather than doing them on the fly through JRiver. And finally, those looking for a USB plug-n-play DAC may also want to look elsewhere. Adding the Berkley Alpha USB adds yet another $2000 to an already $16,000 DAC.

Overall, the Berkley Alpha Reference DAC is sonically a great DAC. Let me just say, that despite configuration limitations that we subjected it to, the Berkley still managed to shine. I sat there wondering how much better it must sound via the AES connection. But overall, given the necessary "work arounds" mentioned above, it isn't for me - but don't be surprised if I change my mind! :) As it sits today, I'm not prepared to convert my DSD files to PCM. For many, that won't be such a big deal, and for some, well worth the effort given the reward.

The other DAC that comes to mind as I write this review is the Lampizator Big 7. Since the Berkley has such wonderful tonality, I would love to hear the Berkley Alpha Reference DAC against the tube based Lampizator Big 7.

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Thnx Mike
When I heard BAD ref. at California audio show it was fully setup for red book and hirez. In my mind it really made red book sound spectacularly like the very best hirez in terms of definition, spatial depth and musicality. Price with spdif is a serious part of the commitment.
So far for me Dsd still remains a small part of my
Listening. Btw did u listen in flac or Wav?

Nick
 
I'm new to this forum, so excuse my "bluntness", but why would you even do a review of this equipment in less than optimal conditions (lack of optimal connections to do a full review)?


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I'm new to this forum, so excuse my "bluntness", but why would you even do a review of this equipment in less than optimal conditions (lack of optimal connections to do a full review)?


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That's all we had. He doesn't own the Berkley USB and I'm not buying one. If Berkley would like to send me one, I'll review under most optimal conditions. The Berkley excelled despite connectivity limitations.




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I am impressed you got one…I heard they are in short supply.
 
Mike, thanks for the write up. How did the sound of the Berkley differ from the Lumin internal DACs?

See review above. Lumin was warmer. Berkley was sweeter with slightly better tonality and dimensionality.

I fully understand Berkley's decisions and reasoning, but if it handled double DSD and had a myriad of inputs, I would consider it a game changer. But then again, if they did, it may not sound as good as it does with RedBook.

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How much of these manufacturer's stances on DSD vs. PCM is traceable to them feeling you can't implement both well in one unit? In other words, the two formats are mutually exclusion do?
 
I read in a review of the DAC that each DAC is hand adjusted for optimum sound, and that is why it is a slow process. At some point, they should be able to understand that process better, and either automate it, or design it into the circuits.

Berkeley says DSD and PCM together would compromise the sound. My suspicion is they started the design of the DAC a few years ago before DSD took off. Only in the last two years has DSD really started to get popular. Anyway, their choice was to either redesign the DAC to include DSD or offer an alternative. That's my guess.

Since I don't have any DSD, it doesn't matter to me. However, their solution of providing Windows software to handle DSD files isn't very useful if you use a Linux based file player, such as the Bryston BDP1/2.
 
Mike, please go get some cheap bnc cables for your accessory stash. Rca to bnc and bnc to rca...plus the small plug on end adapters. You never know when You will need them!
 
Mike, please go get some cheap bnc cables for your accessory stash. Rca to bnc and bnc to rca...plus the small plug on end adapters. You never know when You will need them!

Yup. Already looking into that.


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Since I don't have any DSD, it doesn't matter to me. However, their solution of providing Windows software to handle DSD files isn't very useful if you use a Linux based file player, such as the Bryston BDP1/2.

It is because you would use jriver on a PC to convert your DSD to PCM. Then you play the PCM format.
 
Mike -

Thx for the write up. I realize it was not under perfect conditions but it is one more perspective on two state of the art digital components.

Interestingly, I'm looking at both of these components as candidates to upgrade my digital front end. Next to impossible to find someone that has both for a comparo audition.
 
Mike -

Thx for the write up. I realize it was not under perfect conditions but it is one more perspective on two state of the art digital components.

Interestingly, I'm looking at both of these components as candidates to upgrade my digital front end. Next to impossible to find someone that has both for a comparo audition.

+1

Thanks for the writeup, Mike! Even under tough conditions, the Reference Dac seems like a winner. Now if it only had DSD...
 
Nice write up Mike. While the Berkley runs 16k you didn't mention the price of the Lumin. Are they comparable in price?

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