Will a Mac and a DAC ever match my long loved 521BEE?
Nov 20, 2014 at 10:49 PM Thread Starter Post #1 of 4

thegreencouch

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Greetings. Yep, it's a noob poster, but a long lurker who's relied on this site for four life-enriching decisions...namely:
 
1. An NAD 521BEE player (into....)
2. A Littledot MT (driving...)
3. Sennheiser HD580s with 650 cable and shell upgrade (and....)
4. Choosing, whenever possible, CDs mastered in the "pre loudness" era.
 
This simple, humble, combo has given me many years of warm, detailed, dynamic, well-dimensioned, non-fatiguing joy. So thanks!
 
But now I need some expert help (if you please)
 
I'm still totally very with the combination of the HD580s and the Littledot, but I've become convinced that it's gotta be possible now to finally rip my CDs losslessly and move to a "non disc" solution.
 
So, after much reading, I set up the following:
1. CDs ripped into itunes using apple lossless encode
2. Macbook Pro 2011 (2.3Ghz i7; 8GB ram)
3. Music Streamer HRT II
4. Same littledot MT amp
5. Same modded HD 580s
 
When I first put it together and played some of my best known tracks. I was seriously impressed. Impressive soundstage; great punchy dynamics, clear and warm vocals, nice spacing between instruments; etc.  "great!" I thought, "I've found a non-disc solution!"
 
But then I A/Bd against the NAD; and addressing the gap I found is where I need your help. How to describe it? When I did the switch it was like I went from a really good reproduction of the music, to the music itself. The vocals that had sounded great still did, but they had dimension now; the singer was reaching forward; she had space around here. Basslines that were accurate with the DAC were now accurate and grabbing. The big differences were in the "warm mid" area; vocals, chellos, tom toms. But the sense of a much more tangible music experience was clear overall.
 
Starting the A/B on the NAD and switching the HRT was a less obvious change. The HRT still sounded a very close match, and excelled in some aspects, like its broader soundstage. But switching back to the NAD alway revealed an obvious leap in, I don't know, realism I think. It was like a thin veil that had flattened everything slightly on the HRT was lifted away, revealing the players themsleves.
 
So, what I'm asking more experienced ears than mine is:
* can you make any sense of what I'm desribing and if so, what is it that the 521BEE is delivering over the HRT?
* is this just a case of DAC shopping until the right one comes along?
* is there something I'm missing that will make a bigger difference than the DAC?
* any tips on DACs that will deliver the presence (is that the word?) that my beloved 521BEE has done?
 
My thanks in advance for any advice or comments.
 
Nov 21, 2014 at 2:20 AM Post #2 of 4
It's not so much "whether" a computer+external DAC could, but which. A lot of DACs/CDPs sound fundamentally similar for about 90% of it but sometimes how they do the remaining 10% (and for how much more) is where anyone who has been able to extensively compare at least two would spend money on. While I can't give a specific recommendation, what I'd suggest if you keep looking. Maybe even ask in speaker audio forums if anyone has tried any DAC with the kind of inputs you need that has an even closer sound to the NAD.

BTW I'm also a fan of NADs, but the way the local distro handled the C520 transport fiasco (on top of all my other busted CD transports) has kept me away from dedicated CDPs, especially how some later had digital inputs but cost an arm and a leg (upwards of $1,000). The 521BEE is still one of the best out there, honestly, and it's kind of tough to beat. I like the Schiit Bifrost but you might find its midrange a bit "dry" by comparison.
 
Nov 21, 2014 at 4:44 PM Post #3 of 4
Many thanks for that protegemaniac. 
 
Yeah, 521BEEs have had transport issues too. This is the second one I've gone through but the sound quality (for the price) kept me coming back. I guess you don't get everything.
 
I'd never heard of the bifrost before but from the reviews I've just read it sounds quite phenomincal, and much closer to the sound I'm seeking, so thanks for that suggestion.
 
I'd welcome any other views on my challenge. Am I right in think that the DAC will be the biggest changer? (ie: I've seen some stuff about different file types, solid state memory, etc etc but they strike me as pretty peripheral...hope I'm reading that right)
 
Cheers
 
Nov 21, 2014 at 10:35 PM Post #4 of 4
  I'd welcome any other views on my challenge. Am I right in think that the DAC will be the biggest changer? (ie: I've seen some stuff about different file types, solid state memory, etc etc but they strike me as pretty peripheral...hope I'm reading that right)

 
The whole DAC, not just the chip. There are very minute differences between each chip and mostly inaudible really, but when you factor in marketing for what each chip is popularly known for, then chances are the engineers might actually design the DAC to do just that (like how the WM8740 is known to be "warm"), although you could get just about any DAC and design the output stage as such, like how AudioGD sells a Sun, Moon, and Earth Op-Amp option.
 
File types only matter in so far as it's at least 320kbps VBR; there's a little bit of advantage to using lossless, but admittedly in my case I just can't be bothered to convert my archive and have two sets (one for home use and/or archive, one for portables) of libraries so I just download and use FLAC. Between lossless formats, there's no difference, not even anything measurable but beyond audibility. The mastering will always matter more, so no need to really go crazy for DSD right now. Another thing, a lot of DSD-compatible players aren't actually decoding them in DSD protocol, but converting DSD/SACD to PCM then running them through a regular 24bit PCM DAC. I've had snarky reactions when I mentioned that before like I'm some sort of obsessive alien (curiously enough, the one who isn't obsessing over using DSD gets to be insinuated to be just that), even as I know personally that that's how cheap (and heck even some "high-end") universal disc players do it (which were all the rage in the last decade, since a Pioneer 6xx DVD player is less than half the price of a NAD CDP), only for manufacturers like Fiio to state later on that that's exactly how their X5 portable player deals with DSD (and look, no apologies either).
 
As for your transport hardware, no need to go SSD, or at least avoid older model cheap SSDs. Those were designed more for running the OS, and some wear out over time with frequent data access and write/erase cycles. Just get a good quality HDD like WD Red instead of getting a $50 HDD, that is if you're building a server. I use a $70 Barracuda on my gaming rig, but hey it's not like I'll mind hearing the HDD spinning when my games are loading. Better yet, look into network server set-up, and use a dedicated transport (computers and tablets/smartphones tend to have limitations on lossless transmissions if you don't set it up right, or it you really want to use high res) that can remotely access an HDD server, this way the latter will be in a different room and you totally won't hear the drives working. In the short term of course there's really nothing wrong with using a spare laptop while you research more and plan on how to go about all that since it will either be complicated (using a miniPC for example) or expensive (dedicated music server hardware). The primary problem really with using a computer as a server is that some USB ports don't deliver the power needed by the USB DAC, as some even if they have their own power supply needs the USB 5v to power at least the USB receiver chip and automatically trigger that as the input.
 

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