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In Reply to: RE: What a big disappointment; NAD M51 with OPPO 105d (long) posted by Trouser Trout on October 16, 2016 at 16:34:14
And what is the chance any of them will improve on the 105d? Any specific recommendations?
Follow Ups:
I own a 105D and I also own a TASCAM DA-3000 DSD recorder. The DA-3000 has BurrBrown PCM1795 DACs and it sounds better to me than the 105D. I bought the DA-3000 to copy my LPs to DSD, but it can play both PCM and DSD directly from a USB flash drive plugged into its front-panel USB port. It can also be used as a DAC, but it doesn't have a USB DAC input--only coax, AES/EBU and SDIF-3. Anyway, I think my DA-3000 has tighter, deeper bass than my 105D and it also sounds more accurate and transparent. In other words, when I copy an LP and play it back through the DA-3000 it sounds just like the LP but when I play it back through the Oppo BDP-105D it sounds different. It has looser bass and it just doesn't sound as good as the LP directly from the turntable or through the DA-3000.
Best regards,
John Elison
Here is my system in case you're interested:
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My Oppo HA-1 DAC/Headphone Amp sounded a little lean or on the cool side compared to my other DACs including the PS Audio NuWave DSD, Mytek Stereo192-DSD, and the Ayre QB-9 DSD DAC. This was regardless of what format I fed it and I primarily listen to pretty standard stuff like PCM 16/44.1 from CDs or higher resolution PCM 24/96 downloads.
I'm wondering if the Oppo BD players sounds a little lean and/or on the cool side rather than more full-bodied, robust, and warmer. The only Oppo product that I owned was the HA-1.
The Oppo HA-1 before I sold it
My Oppo BDP-105D does not sound lean or cool at all. It is rather warm sounding and makes a lot of CDs sound better than usual. I got the feeling it might have been "voiced" to sound like a tube component. The problem I have is that it doesn't sound accurate when I play my digital recordings of vinyl. I was used to them sounding just like the turntable, but they just don't sound right on the BDP-105D. I much prefer playing my vinyl recordings in my TASCAM DA-3000, which is very accurate and transparent. The DA-3000 also has somewhat tighter, deeper bass.
Best regards,
John Elison
Thanks John for describing the sound of your BDP-105D. I was curious to know if it sounded anything like the HA-1 that owned and apparently it doesn't, which is good if I ever get one of their blu-ray disc players.
Oppo is coming out with a new Blu-Ray disc player in late 2016. I guess it must be coming real late in 2016. ;-)
The DA-3000 has BurrBrown PCM1795 DACs and it sounds better to me than the 105D.
I suspect what you are really hearing is differences in the unit's analog output stage. The Tascam uses NE5532 op amps vs. the Oppo's LM4562s.
Ironically, the former is a 1979 design while the latter is from 2006. :)
People in 'digital' forums tend to place too much weight on the DAC chip itself for it's contribution to the overall sound of a DAC. There are several outstanding modern DAC chips to choose from yet the same chip implemented by different designers can result in vastly different sounding DACs. Some outstanding, some crap. As you mentioned, the analog output stage has a huge influence on the overall sound, arguably more so than the DAC chip itself.
And one inmate's suggestion of simply removing coupling caps to improve sound is a dangerous one. This is the same guy who blew up his Tektronix oscilloscope by probing around where he didn't belong. If it were that stupid simple the designer would have removed the coupling caps and their associated cost to begin with. Coupling caps are there for a reason.
You are expert in fabrication. Troll.
Now Abe, you know very well that's not what he meant.
I'm afraid all this talk of R2R vs. DSD dac chips and methodology has gotten me to the edge of pulling the trigger on the Yggdrasil. What tipped me today was finding this review by Craig Uthus of Eddie Current, formally of Moth Audio.
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Big speakers and little amps blew my mind!
to attribute SQ exclusively to opamps. It depends on how they are powered, bypassed and coupled, as well as how many in the audio chain.
The Oppo has coupling capacitors and this was a reason why I wouldn't buy one.
Remove the coupling caps in most ouptput stages and SQ changes very significantly for the better.
> The Oppo has coupling capacitors and this was a reason why I wouldn't buy one.
Please show me the schematic for any DAC that DOESN'T have a coupling capacitor in the output stage or simply explain how one passes AC while blocking DC without a coupling capacitor.
Come to think of it, how does a 2A3 direct coupled power amp with a direct (series) feed OPT prevent DC from getting to the speakers?
My quick and dirty answer to your question would be a DC blocking cap after the voltage amplifier, as opposed to a coupling cap between the dac chip and the V amp. Seems like a gyp though. Not like you asked me. :)
I just got a Schiit Yggy that's billed as direct coupled. Maybe I'll ask them about it when I send them an email about what I like and don't like about their dac.
Keep slinging that solder Palustris!
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Big speakers and little amps blew my mind!
Sorry! That question wasn't aimed at you...
exclusively to dac chip and opamps, the same caveats apply.
...attribute SQ exclusively to opamps.
Who did that?
It depends on how they are powered, bypassed and coupled, as well as how many in the audio chain.
What the rest of us call the " analog output stage ." :)
Agree about coupling capacitors.
Still, a linear amplifying device is always a good thing.
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Big speakers and little amps blew my mind!
Linear Stage - agree. It is also true that power supplies influence sonics a lot.
Thanks John for your post. Are you able to blind test the OPPO against the Tascam at equalized volume?
No, I did not conduct a blind test or even an A/B test. The difference is pretty obvious, though.
While auditioning the M51 I found a good deal on a preowned PS Audio Perfect Wave DAC mk2. Took a chance. That improved the on the M51 and is my current DAC. Never heard the new Directstream so cannot make a comment if that's even better
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