All things Metrum Acoustics
Apr 25, 2016 at 11:11 PM Post #31 of 1,444
Thank you very much, The Fed.
 
I just sold my Cayin C5DAC this week as I was not using it. Got the Chord Hugo and too many portables I'm not using.
 
Please let me know what you find out. I'm kind of frustrated with the Metrum Hex. I've bought everything mentioned here and no dice. I'll take pics later tomorrow or Wednesday to show how it is set up now.
 
Apr 26, 2016 at 2:13 AM Post #33 of 1,444
Just added an Octave MkII to my collection
Really happy , compared to my Yulong Sabre D18 it is much more HD800 friendly
Presentation is so gentle but still full of detail with beautiful tone
They are running out at very good prices right now , I paid a little over 900 US all up
 
Apr 26, 2016 at 9:26 AM Post #34 of 1,444
I will call them today. Great idea...!
 
Apr 26, 2016 at 9:33 AM Post #35 of 1,444
Apr 30, 2016 at 1:18 PM Post #38 of 1,444
  Some more innovation from our Dutch friends
 
http://www.digitalaudioreview.net/2016/04/metrum-acoustics-tease-adagio-nos-digital-pre-amplifier/

 
I saw this on Metrum's splash page.  I'm kinda thinking this might be more geared towards speaker setups, as the volume pot is so one could skip a preamp...
 
May 16, 2016 at 2:49 AM Post #40 of 1,444
  Is anybody here running an Aurix? The design sounds brilliant... does the sound follow the design?


The thing about Aurix - its the closest to a 'wire with gain' that I have come across. It gets out of the way and lets the DAC (and the music) shine through. It's not the most powerful but it runs the HD800 without issue - in fact it is a great match for it.
 
May 16, 2016 at 7:41 AM Post #41 of 1,444
 
The thing about Aurix - its the closest to a 'wire with gain' that I have come across. It gets out of the way and lets the DAC (and the music) shine through. It's not the most powerful but it runs the HD800 without issue - in fact it is a great match for it.

A silky smooth, liquid quality? Like the finest tube amps you have heard? It "should" be this way given the design. Thanks for dealing with my questions...
 
May 16, 2016 at 8:12 AM Post #42 of 1,444
  A silky smooth, liquid quality? Like the finest tube amps you have heard? It "should" be this way given the design. Thanks for dealing with my questions...


Sort of ... but not really. I mean, it is smooth when the recording is smooth, it does not smooth off rough edges that are there, the rasp of a violin or trombone or something.  I'm no expert on tubes though, but I'd describe the Aurix as "realistic or lifelike".
 
But having siad that it certainly handles the picky HD800 very well - I can even listen to some rock recordings with it now 
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May 17, 2016 at 2:42 AM Post #43 of 1,444
The zero-feedback design of the Aurix that works particularly well with the very revealing HD800 - which readily detects a brittle edginess in the treble of the Oppo HA-1 amp section, for example, a low-energy hash near the noise floor created as an artifact of using lots of negative feedback to eliminate the distortion introduced with multiple gain stages.
 
This Nelson Pass article explains the benefits of zero-feedback amps:   https://passlabs.com/articles/audio-distortion-and-feedback
 
Also see Dan Cheever's thesis, in which he misspells Robert Harley's last name, in quoting him:  http://dancheever.com/main/cheever_thesis_final.pdf
 
But yes, the Aurix is amazingly transparent.  It expresses no artistic license.  It's just a technician. Ideal.  
biggrin.gif

 
Mike
 
May 17, 2016 at 8:33 AM Post #44 of 1,444
  The zero-feedback design of the Aurix that works particularly well with the very revealing HD800 - which readily detects a brittle edginess in the treble of the Oppo HA-1 amp section, for example, a low-energy hash near the noise floor created as an artifact of using lots of negative feedback to eliminate the distortion introduced with multiple gain stages.
 
This Nelson Pass article explains the benefits of zero-feedback amps:   https://passlabs.com/articles/audio-distortion-and-feedback
 
Also see Dan Cheever's thesis, in which he misspells Robert Harley's last name, in quoting him:  http://dancheever.com/main/cheever_thesis_final.pdf
 
But yes, the Aurix is amazingly transparent.  It expresses no artistic license.  It's just a technician. Ideal.  
biggrin.gif

 
Mike

Thanks! You are preaching to the choir! I have been a zero feedback amp fanatic since I had my first Futterman + KLH9 system in the late 80s. I am currently running a PonoPlayer and Audio Zenith PMx2s -- the most underrated combo in Head-Fi'dom! Now looking for a desktop system and stumbled across the Aurix... Time to get one!
 
May 17, 2016 at 8:41 AM Post #45 of 1,444
  The zero-feedback design of the Aurix that works particularly well with the very revealing HD800 - which readily detects a brittle edginess in the treble of the Oppo HA-1 amp section, for example, a low-energy hash near the noise floor created as an artifact of using lots of negative feedback to eliminate the distortion introduced with multiple gain stages.
 
This Nelson Pass article explains the benefits of zero-feedback amps:   https://passlabs.com/articles/audio-distortion-and-feedback
 
Also see Dan Cheever's thesis, in which he misspells Robert Harley's last name, in quoting him:  http://dancheever.com/main/cheever_thesis_final.pdf
 
But yes, the Aurix is amazingly transparent.  It expresses no artistic license.  It's just a technician. Ideal.  
biggrin.gif

 
Mike

Reading Cheever's thesis... killer stuff! Thanks!
 

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