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bwck2000 last won the day on February 5 2019

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About bwck2000

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    Limited Edition Bronze Participant


  • Location
    Hong Kong
  • Headphones
    es1a and omega
  • Headphone Amps

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  1. There is also one winding only on my friend's 007ta. No any other copper wire sticking out. Seems bridging the cut winding for voltage change is not possible on those latest models anymore.
  2. Nice write up, from the amount of measurement graphs I can see how much effort you have put to it. Trimming down regions across the spectrum that you think is too much is a much more direct way to get a sound desired than trying out different gears. The 2K-3K region is particularly sensitive to our ears. To my experience, elevating it increase the glossiness of sound, adding more presence to each instrument and give people a good first impression on audition that it is a headphone with good sound quality. While lowering it make the headphone more relaxing, tolerable to long-term listening
  3. You can use a multimeter to check the balance and offset of the amp that if they are on zero or anything near it. Another way to work on it is to loosen the 5 silver screw on the driver a bit using a hexagon screw driver.
  4. I have an es1a (omega clone ) loaner unit in US right now. I wonder anyone here would be interested to try them out ? Shoot me a pm if you do.
  5. I have an es1a loaner unit in US right now. I wonder anyone here would be interested to try them out ? Shoot me a pm if you do.
  6. I am using a1968 so its 450v config. Unlike the carbon, it has no adjustable ccs current so I didnt measure it. Maybe I need to order a pair of new heatsinks with longer fins. Its also a fail with no ventilation openings at the bottom but on the top only.
  7. I managed to get my kgsshv project done without creating some big mess and spark, and I want to thank KG for his design , Birgir and many member here for their generous contributions. oyaide L/i50 OFC is used as umbilical cords but is not shown here. later on a L/R balance control will be installed. The power and the amplifying section is about the same size so they can be stacked together. The heat sink size is less than ideal and it runs so hot that I can barely touch. My IR thermometer reads 47 oc but I think it is inaccurate due to the shiny appearance of the heatsink. But then I t
  8. You can check out here for reviews from users and loaner program participants, may give you some insight. There is also a video of es1a vs 009 AB comparison recording. Although the recording quality is not too good but it provide some references.
  9. I am glad to have received positive impressions on the es1a from chinsettawong and spritzer, Really appreciate that🤩 es1a is an alternative to totl electrostatics like the 007 mk1 and 009 for people who dislike their darkness/brightness, or owners of them who want to try something new. The es1a is brilliant in some aspects, and so do the 007 mk1 and 009. I particularly enjoy the wide soundstage, naturalness and airy, transparent highs of es1a. I hope that es1a will be refreshing to the community, since the 007 mk1 and 009 have been out for like a decade or two already. Es1a inherits some
  10. I guess there is no need for a port mod anymore? The idea of the port mod is to do the role the little white piece does, blocking the ventilation path but the piece is preserved after a driver replacement in your 007.
  11. Two completely different creature, cant compare as if between two lambda models. The most obvious difference would be the soundstage. Its like a Jazz cafe VS a cathedral. The L700 sigma still holds lambda-level detail and transparency, unlike the original sigma. But the detail and the high frequency on the l700 sigma are just not as apparent as the L700.
  12. A milestone of my rare stax hunt: Quattro II🤪 So basically its a third-party CDP with a enlarged chassis, a very sophisticated power supply + DAC . They have separate power supplies for left and right channel as well as the digital section. The CD section has a plastic case but it is put in another aluminium case and on a wood base where the dac section is located. The CD pickup is Sanyo sf-88. Before the aged parts are replaced, The CDP sounded very neutral, fatigue-free with a special sense of spaciousness, but there was no real bass and dynamic. Then tho
  13. While amateurs depend on luck and trials, you have craftsmanship 🤩 The most important thing needed to make great electrostatics......
  14. A dust free environment means a confined space with dust-free air sipply from HEPA Units filtering particles down to um-level and a positive air pressure to make sure that airflow is one-way-out only. It could be as small as a brench or as big as a factory. A normal working space along with a air purifier sitting at the corner or thorough cleaning is definately not a dust free enviroment, far from it. But in reality, there are some people who open their e stat driver, put it back and nothing happen. So whether dust gets into the driver or not is simply by chance. But if you do not want to
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