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  1. 2leftears

    Sennheiser HD250 Linear Impressions Micro-Thread

    Definitely HD430 pads; I have some of these exact same pads too for my HD250, which I bought from Sennheiser direct. For some time Sennheiser sold these (HD430 pads) as the official replacement pads for the HD250 linear once their original HD250 spare pads had run out. They are slightly...
  2. 2leftears

    What Are You Listening To Right Now?

    GLIM SPANKY Cover of "Move Over" by Janis Joplin:
  3. 2leftears

    Capacitor Upgrades

    I can't speak for other makes, but vintage Marantz & Philips CD players with CDM radial-transports that skip can often do with replacement of the electrolytic caps used in the tracking & focus servo circuits. I think it is the increased ESR of the old caps that is causing issues. A simultaneous...
  4. 2leftears

    Wow! Sennheiser HD 540 Reference are so good.

    Hi sennsay, From my experience I would not be surprised if that 'buzz' is caused by a hair that has managed to partially work its way through the felt dust guard protecting the driver and is now "tickling" the driver membrane from the outside. I have seen that a lot on these Sennheisers...
  5. 2leftears

    Wow! Sennheiser HD 540 Reference are so good.

    Folks, I have returned to this thread (and head-fi) after a few years of absence! I'm working part-time now and have more spare time for these luxuries :wink: I have renovated quite a few HD540 and HD250 over the last three years, and it may be useful to share some tips re. replacement of...
  6. 2leftears

    Sennheiser HD540 Reference Gold pads and foam discs

    Hi, A bit late to the party on this thread, but I have renovated quite a few Sennheiser HD540 and HD250 headphones. The HD250 also has additional foam (and felt) hidden inside the drivers that needs to be replaced. Often the cushions and flexible part of the head-band need replacing as well...
  7. 2leftears

    Audiophile Ethernet cables - The World Has Gone MAD!

    Audiophile USB cables are funny as well. Coax depends on whether they carry analog or digital, and when digital (under discussion here I assume) it depends on the protocol (Ethernet over coax, or S/PDIF etc.). Assuming the connection isn't totally bad due to corrosion etc, the key consideration...
  8. 2leftears

    Marantz HD-DAC1

        Sorry about the double post, meant to quote Gamergtx260!   Works fine on the front USB port.  I am using a Seagate Backup Slim 500Gb, because of its minimalist small design, but predominantly because it is really quiet.  The drive needs to be a single FAT32 partition, and I am using...
  9. 2leftears

    Marantz HD-DAC1

    Works fine on the front USB port.  I am using a Seagate Backup Slim 500Gb, because of its minimalist small design, but predominantly because it is really quiet.  The drive needs to be a single FAT32 partition, and I am using .wav files at 44.1kHz.  Note that FLAC is not supported through the...
  10. 2leftears

    Marantz HD-DAC1

    Sounds promising.   Interesting: I didn't check the dimensions and had assumed the HD-AMP1 was the same size as the HD-DAC1.  The side-by-side photo shows it clearly to be bigger.
  11. 2leftears

    Post pics of your builds....

    Nice build, but: Best not use LiPo's then. Discharged below 3.0V They can get damaged. Below 2.5V most chargers will reject the battery as it is considered too dangerous to attempt charging (fire risk). I don't quite understand why a lot of DIY-ers (and manufacturers for that matter) insist...
  12. 2leftears

    Marantz HD-DAC1

    Apologies, have been off-line for a while, so replying to an older post. As much as I would trust Marantz, if anyone, to get this right, the amp audionewbi refers to is some form of Class D. I would seriously suggest some extensive listening before buying. Class D technology IMHO is likely...
  13. 2leftears

    Do you own a vintage CD player? (pics please!)

    Spot on. MP3 compared to CD was a MASSIVE step backwards. MP3 is like looking at a 6-bit 10kpixel reproduction of a painting. The proponents then try to convince you the difference is not noticeable by showing you a Mondriaan. I am still using my 1991 Marantz CD80 players (with caps and opamp...
  14. 2leftears

    Marantz HD-DAC1

    First my apologies DjBobby, I don't mean to pound on you personally at all, it just happens that you wrote a couple of things over the last couple of weeks I thought worth commenting on.  The issue of damping factor re. headphones being one of them.   The damping factor is much less of an...
  15. 2leftears

    Marantz HD-DAC1

      Not quite correct I am afraid.  The PM6005 (like many other Marantz products) uses a dedicated headphone amplifier.  It is not the power amp's output fed through a resistor.  And they are employing opamps for this (one of Marantz' HDAM opamps, which is a discrete opamp as opposed to an...
  16. 2leftears

    Wow! Sennheiser HD 540 Reference are so good.

      Do you by any chance know what type of foam you used?  Open-cell I assume, but polyurethane or neoprene for example?  And if I may ask, where did you source it from?
  17. 2leftears

    Wow! Sennheiser HD 540 Reference are so good.

    Yes, I think o0CosmoMemory0o might be able to give you a full breakdown, but summarizing I am aware of the following ones: HD540 Reference, 600 Ohm, old headband style, cloth & pleather pads HD540 Reference, 600 Ohm, new headband style, cloth & pleather pads HD540 Reference Gold, 600 Ohm, new...
  18. 2leftears

    Wow! Sennheiser HD 540 Reference are so good.

    Personally I would not bother with the HD430. I knew it well from years ago, but never looked back once I got the HD540. The HD430 lacked deep bass and more importantly, IMO lacked spatial definition and detail, as far as I remember it. For some reason I really liked the looks of them though...
  19. 2leftears

    Wow! Sennheiser HD 540 Reference are so good.

      I don't think you will find anything similar to the HD540 that won't break the bank.  The nearest equivalent I can think of would be the HD800, but that one is expensive and some have expressed reservations about phase behaviour (see o0CosmoMemory0o's comments peppered throughout this...
  20. 2leftears

    Marantz HD-DAC1

      Maybe you should try the Marantz showroom next time   Seriously though, this problem has been becoming worse over the last few decades (yes, I am old enough to be able to say that).   Salesmen who know nothing about the products they sell (bad enough), but also salesmen who don't even...
  21. 2leftears

    Marantz HD-DAC1

    I have no experience with the T1, but if Beyerdynamic's historic headphone tuning is anything to go by, the T1 may have been engineered to sound better balanced when driven from a moderate 120 Ohm or so output impedance. Neither the Vali nor the HD-DAC1 provide this, and may make the T1 sound a...
  22. 2leftears

    Marantz HD-DAC1

      True,   Which makes it all the more frustrating that they haven't incorporated proper RCA or XLR line-level analogue inputs!
  23. 2leftears

    Wow! Sennheiser HD 540 Reference are so good.

    Agreed. however, phase and inverse phase lines are not really the characteristic feature of a balanced setup. Crucial for a balanced setup is that both wires (phase & inverse phase, or signal & common/ground) terminate in the same impedance so that noise picked up in the cable cancels out. An...
  24. 2leftears

    Marantz HD-DAC1

      I have an SA-11S3, which I assume has a very similar DAC setup to the NA-11S1.   Summarising, I would say comparing it with the HD-DAC1 there is a definite family resemblance (call it the "Marantz house sound" if you wish).  The SA-11S3 definitely has the edge when it comes to definition...
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