Maybe it IS all in the DAC chips


I’ve often pushed back against the idea of purchasing any piece of audio gear based on the parts contained, especially DAC’s.  While the Digital to Analog Converter (DAC) itself is the key component, so much goes into making a good sounding product,  like stream buffers/jittter removal, power supplies and analog output stage that I thought this could lead buyers astray.

Still, having done that, and still thinking that I correctly warned others to avoid buying just on DAC brands alone, I have found myself after many years, returning again to vintage Burr Brown based DACs and home theater processors.  

Color me changed with experience. 

erik_squires

@mahler123 

I haven’t read any reviews by satisfied Reavon owners.  Magnetar players get good reviews for SQ-they don’t “down convert” from DSD-but they get poor marks for reliability, as they tend to freeze up

As far as I know, Reavon is no more. 

Magnetar produces almost identical beasts to the Reavon UBR-X200 - the UDP800 and UDP900.  These all use the Mediatek System on a Chip (SOC) architecture and all have a 3mm steel plate on the bottom.  The Magnetars have the same dac complement as the Reavon - one multi-channel for unbalanced output, and one dual-channel for balanced output.  The UDP800 uses Burr Brown dacs while the more expensive UDP900 uses ESS dacs laugh.

The Reavon has impeccable published reviews for sound quality, which makes me query whether the reviewers ever really listened to SACD playback.  The sound quality difference was so dramatic, I went to the dac specification sheets to try to discover why.  That’s when I discovered the Burr Brown specification sheets made no mention of DSD.  So I wrote to Reavon who confirmed what I suspected - DSD audio is down-converted to CD quality audio for analogue playback.  The advertising blurb says the machines play SACD which is true - they just do it without the analogue quality that I was used to.

Likewise, don’t expect Magnetar to tell you how they get analogue from DSD.  I’d be suspicious at least where they use Burr Brown dacs.  And don’t expect reviewers to pick up either - they are too busy raving about the video quality.

In my opinion, any of these machines will perform brilliantly as a transport using an external DAC fed via HDMI.  But so will a Sony UBP-X700 at about a tenth of the price.  The Sony does not have the build quality nor as good a remote.  There is no 3mm steel plate to give it heft angry

I actually haven’t heard Magnetar or Reavon.  I read reviews in HiFi mags that didn’t tell me anything useful.  I am going by user reviews.  I came close once to buying a Magnetar so I had done a lot of reading.

 

  My understanding is that Magnetar was formed by the engineers that had designed the Oppo players.  The Magnetar GI looks identical to the Oppo UI.

  In my case the DSD is output over HDMI into my Bryston DAC3 (which uses an AKM DAC chip).  So the internal DAC is of secondary interest.

It is not in the chip, it is in subsequent analog filters that are necessary and are specific to each chip type. DAC output requires brickwall filter, Nyquist is only true for time unlimited signal.

@mahler123 , we’ll if it isn’t broken 😆. I have a handful of rock concerts on Blu-ray and I read the the Oppo limits the resolution due to licensing. Apparently the Dbob defeats the resolution restriction allowing full resolution to be sent in the digital domain to your DAC. Unfortunately I have a Yiggy and they don’t play together, so I never investigated further. I like Bryston gear as my buddy had a full suite before moving on to Mac. I live off his hand me downs. Regards , Mike B.