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cat6man

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  1. well, here i am waiting for a january delivery with too much time on my hands so i went over to the now closed thread on ASR and THD+N measurements (very disappointing), but it got me thinking about the limitations of sine wave, THD, etc. we know that music is much more than a static sine wave. do we know what, from the audio literature, what to measure that correlates with soundstage and depth and height and realism? for one thing, i image that something that involves both stereo channels would be needed, so just for those of you lucky enough to have your eR and need something to post to this thread, how about something like the following: play a good mono recording, with either one or two speakers, and report what you hear with the eR in/out. cheers, p.s. for what its worth, i remember reading years ago that the ear is exquisitely sensitive to delay, way beyond the inverse of highest frequency (e.g. 1/20khz)........and classical conductors were reported to be able to discriminate in tests between absurdly low level of audio delay, which suggests that very small correlations and/or errors in sound between channels are important.
  2. just received delivery of MS-HPULN PS from mpaudio. i kept the potentiometer for output voltage since I'm not yet sure where in my system i will end up using it. next step is to replace the input/output wire connectors with 2.1mm pcb mounted connectors (to be scavanged from old h/w) [then i can tell my wife how i saved $ by keeping that old junk in the basement for future salvage use] current test plans: 1. lps-1.2 ==> (w/ & w/o) mpaudio ==> iso regen (from opticalRendu) ==> DAC 2. hdplex200 ==> (w/ & w/o) mpaudio ==> audiolinux NUC running hqplayer embedded 3. sr4 ==> (w/ & w/o) mpaudio ==> opticalRendu january plans: [no eR here until then] 4. lps-1.2 ==> (w/ & w/o) mpaudio ==> etherRegen
  3. anyone have, and want to share, a particularly good sounding set of variable settings in their profile?
  4. thanks for the reply and sorry it took me so long to find this thread............. although i have the forum threads sorted by date of last reply, all the pinned topics appear first and this thread, since it is not pinned, was way down and i only found it today. i've ordered a unit and will post my progress in the future. cheers
  5. agreed. the lps-1.2/oM combo is wonderful
  6. has anyone tried the oM in their video systems, i.e. feeding a video box like the nvidia shield?
  7. thank you jesus i thought the oM+oR was a big improvement in my audio system compared with copper to an ultraRendu. i will try the eR with my system in january with the better sounding configuration staying in my audio system and the other (oM or eR plus lps-1.2) going into my video system (feeding an nvidia shield) where there have been reports of video benefits. sounds like a win-win happy turkey day everyone!
  8. i was actually asking about the sound of the opticalRendu (which i own and is the subject of this thread) fed by one or the other of oM (which i also own) vs eR (which i will own in January), so i thought it was appropriate here. the original poster was evaluating his opticalRendu in his system with the oM and eR. i was just asking what his impressions were, the subject of feeding the oR with either the oM or eR already being on the table. i am happy to move the discussion wherever but i was asking about opticalRendu sound. maybe you and Jesus can determine where this is most appropriate.
  9. glad you got it working. can you share any observations re: sound quality differences between eR and oM in your system?
  10. re: A side flows to B side for those of us with opticalRendus, it would be interesting if the register change benefit accrued to the A side optical when used downstream. are any of your early testers running B==>A and able to look at that direction?
  11. well, i have multiple generations of products from both of you guys, so let me make one comment here. when i replaced my ultraRendu with an opticalRendu and ran fiber from my netgear switch, i heard a small improvement in SQ. when i replaced the SFP in the netgear with an opticalModule, the SQ improvement was large.............so, it is not just galvanic isolation even if we don't know exactly what it is. heck, why does running audiolinux in ramroot sound better than running it on a usb stick? why does the power supply at the NUC server make a difference with all the other stuff between the server and DAC? we just don't know everything that needs to be measured, therefore not measuring a difference is well short of conclusive evidence that something cannot be working. i'm REALLY looking forward to understanding the mechanisms involved here. reducing known measurable noise sources is a good step in the right direction though. also looking forward to eR in January batch
  12. no no no no no...........you've got it all wrong. the financial industry pays mightily to reduce latency but to do that they get rid of the fiber! there are digital microwave links to connect the markets from chicago to NY built solely to eliminate the wasteful latency of fiber links. propagation time through the air is much less than the propagation time through fiber!!!!!!!!
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