Metrum Octave Dac - What are the Chips used - Page 4 - diyAudio
Go Back   Home > Forums > Source & Line > Digital Line Level

Digital Line Level DACs, Digital Crossovers, Equalizers, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 24th March 2012, 05:02 PM   #31
qusp is offline qusp  Australia
diyAudio Member
 
qusp's Avatar
 
Join Date: Oct 2009
Location: Brisbane, Australia
pieter, sorry but thats a load of bull. a simple unambiguous question was asked and there was only on topic posts pertaining to the answer until the question was in fact answered... the OP did not return, since then we discussed it a bit further, the OP still didnt return so we carried on a conversation. the subjective quality does not make up for what amounts to misrepresentation, which should be uncovered on a forum such as this. nobody said anything at all about using a dac like that being a bad thing, just that it was obviously a unique selling point that the marketing department and press latched onto and that it was NOT 24bit and it was NOT expensive

Last edited by qusp; 24th March 2012 at 05:09 PM.
  Reply With Quote
Old 24th March 2012, 05:20 PM   #32
diyAudio Member
 
Join Date: Apr 2003
Location: Eastern Pennsylvania
Quote:
Originally Posted by qusp View Post
I guess just before you finish your quest the unobtainium ARDA TECH AT1401 will come to reality

doh, just checked that too, nope its DS multibit too
Whoa, really!? The AT1401 is actually a delta-sigma converter?! Where did you get that info?
__________________
Ken
  Reply With Quote
Old 24th March 2012, 05:26 PM   #33
diyAudio Member
 
Join Date: Jan 2008
Location: Virginia
Quote:
Originally Posted by qusp View Post
a cheetah can reach 100km/h in a matter of a few seconds, as can a Corvette.. does this make them the same?
Yes. If they are used to hunt Impalas.
  Reply With Quote
Old 24th March 2012, 06:55 PM   #34
qusp is offline qusp  Australia
diyAudio Member
 
qusp's Avatar
 
Join Date: Oct 2009
Location: Brisbane, Australia
sorry Ken, i thought it was true multibit too, but i had 3 of their datasheets open and with such similar names i flicked to the wrong page. its the ADC thats delta sigma. I didnt look as closely because only minutes before i'd found that the AKM (AK4390) i assumed was true multibit was multibit delta sigma

as you were; waiting..waiting...waiting
  Reply With Quote
Old 24th March 2012, 06:58 PM   #35
qusp is offline qusp  Australia
diyAudio Member
 
qusp's Avatar
 
Join Date: Oct 2009
Location: Brisbane, Australia
Quote:
Originally Posted by SoNic_real_one View Post
Yes. If they are used to hunt Impalas.
you raise a valid point..I had not considered this possibility....

  Reply With Quote
Old 24th March 2012, 07:01 PM   #36
diyAudio Member
 
Join Date: Jan 2008
Location: Virginia
Sorry for off-topic
  Reply With Quote
Old 28th March 2012, 04:34 PM   #37
jitter is offline jitter  Netherlands
diyAudio Member
 
jitter's Avatar
 
Join Date: Aug 2004
Location: Eindhoven, The Netherlands
Nowhere is revealed what DAC-ICs are actually used in the Octave. In pictures it's also clearly visible that the printing has been sanded off, so this is on purpose.

Why then did you provide a link to the datasheet of a TI DAC8581 and write about it as if it's certain that it's the one inside the Octave (times 8)???

Last edited by jitter; 28th March 2012 at 04:57 PM.
  Reply With Quote
Old 28th March 2012, 04:46 PM   #38
Account disabled at member's request
 
Join Date: Apr 2009
Quote:
Originally Posted by jitter View Post
Nowhere is revealed what DAC-ICs are actually used in the Octave. In pictures it's also clearly visible that the printing has been sanded off, so this is on purpose.

Why then did you provide a link to the datasheet of a TI DAC8581? And why are you writing about it as if it's certain that it's the one inside the Octave (times 8)???
Mere speculation...
One other thing: apart from the unidentified converters the six layer PCB is essential part of the design, not just to hold the parts in place and supply the connections but to make the design sound as it does (magnificent).
Very little room for upgrading (think of your favorite power cord and interconnects) as there is also no analog output stage "to tweak".
  Reply With Quote
Old 28th March 2012, 04:48 PM   #39
diyAudio Member
 
abraxalito's Avatar
 
Join Date: Sep 2007
Location: Hangzhou - Marco Polo's 'most beautiful city'. 700yrs is a long time though...
Blog Entries: 104
Send a message via MSN to abraxalito Send a message via Yahoo to abraxalito Send a message via Skype™ to abraxalito
Quote:
Originally Posted by jitter View Post
Why then did you provide a link to the datasheet of a TI DAC8581?
Because this is the one most probably being used in that DAC. Based on my observation of the layout and the information provided in the 6moons article where it was reviewed. I don't know it for sure. If anyone has a better suggestion let's hear it.

Quote:
And why are you writing about it as if it's certain that it's the one inside the Octave (times 8)???
In the absence of any other suggestions, then I'm fairly certain its this one. All the evidence given fits this chip.
__________________
I have the advantage of having found out how hard it is to get to really know something... how easy it is to make mistakes and fool yourself. - Richard Feynman
  Reply With Quote
Old 28th March 2012, 06:40 PM   #40
jitter is offline jitter  Netherlands
diyAudio Member
 
jitter's Avatar
 
Join Date: Aug 2004
Location: Eindhoven, The Netherlands
After glancing though the datasheet, I can see why one might think it's the DAC8581, but I still have some doubts.
There's also a review of the Octave by Hifi Critic, and they measured the actual resolution to be 18 bits. I can't see how that's possible with 16 bits DACs.
Metrum Octave review by Hifi Critic
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
dac chips kiwi88 Digital Line Level 2 5th August 2009 02:25 PM
dac chips for trade tubedude63 Swap Meet 1 25th May 2007 10:04 PM
Looking for 6 x TDA1545A DAC chips WALTER BURKHARD Swap Meet 2 5th April 2007 10:24 PM
F.S.: various Dac-chips Cobra2 Swap Meet 4 23rd November 2004 10:00 PM
Best DAC chips 5th element Digital Source 7 7th June 2004 04:08 PM


New To Site? Need Help?

All times are GMT. The time now is 08:03 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2