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  1. ursdiego

    Koss E90 (driver unit in the ESP950 ESP95x package) modifications

    Hey, @AudioCats thanks a million for all that efforts in tuning this Koss-Setup. I got mine yesterday from Drop. It feels like they have saved money wherever it was possible in order to sell an electrostatic headphone at this price tag. Indeed it sounds good for the cost, no doubt about that...
  2. ursdiego

    The Koss ESP950 thread (ESP owners, please contribute! :)

    Received my sample today. From all full size headphones I owned up to now, its the only one I will probably keep for good. Soundwise, it is certainly one of the best headphones I have ever heard. The build, on the other hand, is probably the worst I ever had in my hands. Koss has obviously gone...
  3. ursdiego

    Soekris ApS dac1101 V. MyST PortaDAC 1866OCUB v.3 v. DIXO portable USB R-2R DAC

    Hi there   I still use my HM-801 and it is just awefully hard to find an update. Actually, I am fine with the sound, but I'd love it to be just a little bit more portable (smaller) and convenient.   A delta-sigma-based dac or dap has never been an option for me, I am just too much used to...
  4. ursdiego

    HM-801 - Handling: Howto delete several favorites? Howto factory reset? Deleting hidden files/folders on the onboard-flash?

    Hi everybody! I still stick to the HM-801 - its still (one of) the best sounding player imo featuring the organic R2R-characteristics, even though it is indeed a bit chunky and not very easy to handle. I tried Rockbox, but went back to the original firmware V 0.23, as I want to listen to 24bit...
  5. ursdiego

    Hifiman 801 Appreciation thread

    EDIT: I turn this one into a thread of its own...
  6. ursdiego

    S.M.S.L. iDol Discussion and experiences thread

    I think there is no thread around for the S.M.S.L iDol, is there? Let me know if there is already another one and close this one, as double threads are quite annoying.   This is an update compared to my first review. I tested the IdOL again today, and I decided to modify my review. Here is my...
  7. ursdiego

    USB charges the HM-801's battery too.

    Just tried, no success. True, the battery icon shows as if the device would be charging on Rockbox. But after a couple of hours the battery was still at the same level, even though it was connected to a 2A wallwart charger that is strong enough to charge tablets. I believe it does not actually...
  8. ursdiego

    Hifiman 801 Appreciation thread

    OK that's good to know, thanks. Not cool... Why the heck do they do this...? Does not make much sense imo. However, for what I listend up to now, all was 16bit/44.1khz material and sounded good.
  9. ursdiego

    Hifiman 801 Appreciation thread

    I already did. Originally my FW was Version 0.23. After reading that 0.19 seems to have a better sound quality, I installed 0.19 beta. And then I installed Rockbox over it, which actually results in dual boot now. I must say that it sounds awesome with Rockbox. I have the impression that Rockbox...
  10. ursdiego

    Hifiman 801 Appreciation thread

      Just to know what happens: If I install ("downgrade") to 0.19 and patch it with rockbox, will it be the 0.19-Firmware that handles the sound, or is this part overwritten by rockbox? In other terms: If I install rockbox (as dual boot over the original firmware), does the sound quality depend...
  11. ursdiego

    16bit/44khz or HiRes - any REAL blind tests out there?

    I agree that the finding is difficult to explain, that downsampling is worse than recording directly at the lower sample rate. This is very probably due to shortcomings of the downsampling algorythm used.
  12. ursdiego

    16bit/44khz or HiRes - any REAL blind tests out there?

    You are of course right. However, there is a practical use, I think.   I have the feeling, for example, that many are cautious about spending money for exotic cables, and if they do, they will test their purchases carefully. On the other hand, it seems that many take it for granted, that so...
  13. ursdiego

    16bit/44khz or HiRes - any REAL blind tests out there?

    @ spruce music: Thanks for the references and your A-grade-summaries! These tests sound rather interesting, I will have a closer look tomorrow. And even if a difference is audible to some, it is not yet clear, which one sounds better or more close to the source. As @ sonitus mirus I believe that...
  14. ursdiego

    16bit/44khz or HiRes - any REAL blind tests out there?

    @RRod yes I did that. Using “Qobuz” “master recordings”, natively hi-res recorded hi-res tracks, and comparing the down-sampled ones to the originals. The tests were not really blind though, and I was trying hard to justify my investment into a decent hi-res DAC and hi-res tracks. But I was...
  15. ursdiego

    16bit/44khz or HiRes - any REAL blind tests out there?

    Thanks for your replies. However, there is no citation of a representative study that would include blind (or better double-blind) listening tests with good material (good means: native "hi res" - recordings on one hand, versus good material that was properly (!) down sampled to 44.1 or 48 khz...
  16. ursdiego

    16bit/44khz or HiRes - any REAL blind tests out there?

    Hello Guys!   Is anyone aware of any real, high quality, representative (double-)-blind-tests done to evaluate whether High Resolution Audio does sound better, equal or worse than CD-standard?   PLEASE no speculative theoretical answers here - the internet is full with them all over, the...
  17. ursdiego

    Best on-the-shelf AMP for Fostex x Massdrop TH-X00 Purpleheart ?

    I came over the Temple Audio XC3 Headphone Amp / Pre-Amp that claims to provide a "very linear, low impedance response"... Any comments?
  18. ursdiego

    Best on-the-shelf AMP for Fostex x Massdrop TH-X00 Purpleheart ?

    What I like about this particular Burson is its discrete design. Might be more a question of believe than of facts, anyway. However, it looks like the JAZZ-ff fits this cans better, but I believe that it has an op-amp somewhere. Maybe somebody know where to find some list of low-impedance...
  19. ursdiego

    Best on-the-shelf AMP for Fostex x Massdrop TH-X00 Purpleheart ?

    Hi again! If you had to choose between the Corda Jazz FF and a Burson HA-160, which one would you get...?
  20. ursdiego

    Best on-the-shelf AMP for Fostex x Massdrop TH-X00 Purpleheart ?

    Hi VRacer-111, thanks for this advice, sounds very promising indeed. It is a bit on the upper end of my budget though. However, I will consider it very closely, might well be worth the budget. Did you order it directly at meier-audio.homepage.t-online.de or do you know a better/cheaper source? Best!
  21. ursdiego

    Best on-the-shelf AMP for Fostex x Massdrop TH-X00 Purpleheart ?

    Well I start myself...   How about: - SMSL sApII TPA6120A2 (small and rather cheap... however, is this too "mid-fi" for the Fostex TH-X00?) - Schiit Asgard 2 Headphone Amplifier? - Matrix M Stage? - Gilmore Lite - Yulong A800 - Schiit Magni 2   I got most of those name from another...
  22. ursdiego

    Best on-the-shelf AMP for Fostex x Massdrop TH-X00 Purpleheart ?

    Hey Girls and Guys   I dont't really believe that nobody has any good idea for me...?   Cheers!
  23. ursdiego

    Best on-the-shelf AMP for Fostex x Massdrop TH-X00 Purpleheart ?

    From my profile...   Headphone Inventory - PerfectSound In-Ears 201 - Ortofon e-Q5 - Fostex x Massdrop TH-X00 Purpleheart (yet to arrive, expected by September '16) Headphone Amp Inventory Portable DAP: Hifiman HM801 ADL Esprit DAC/ADC/preamp/headamp No full-size amp yet...
  24. ursdiego

    Best on-the-shelf AMP for Fostex x Massdrop TH-X00 Purpleheart ?

    Right. This is actually the design as I see it:   My Resolution Audio MC 2.0 is a DAC, that can also act as a preamp, however, volume control is relay-bridged when at 100% and when used with another preamp/headamp, to avoid double volume control.   I will connect this MC as a DAC to the...
  25. ursdiego

    Best on-the-shelf AMP for Fostex x Massdrop TH-X00 Purpleheart ?

    ... and what I forgot to mention: I own an ADL Esprit that would do the job as an interim solution. And of course, whatever I buy, must outperform the ADL Esprit. That should not be too dificult, considering that the ADL Esprit is a multifunctional DAC/ADC/preamp/Headamp. And what I look out for...
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