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Laowei last won the day on April 3

Laowei had the most liked content!

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270 Excellent

About Laowei

  • Rank
    Limited Edition Bronze Participant
  • Birthday 06/07/1957

Profile Information

  • Gender


  • Headphones
    Stax SR-009, SR-207, SR-003mk2
  • Headphone Amps
    KGHV-Grounded Grid
  • Sources
    Mac mini > Schiit Yggdrasil
  • Other Audio Gear
    DIY PP 6V6 amplifier. ALTEC 890C Bolero/Econowave modded speakers

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2,988 profile views
  1. Laowei

    The Headcase Stax thread

    FYI: Search on eBay for STAX EP-007. Five Japanese vendors have pairs for sale there.
  2. Laowei

    Hifiman Jade II

    Something lost in the translation to Chinglish? 😲 I learned that Fang is either a retard or deliberately trying to con his customers by using an Ohmmeter to “measure” the DC resistance of a transformer with 1000VDC across it. All in an apparent attempt to negate/quantify transformer AC leakage impedance/reactance current that shocked the YouTube video guy. Naturally, the VOM’s overvoltage protection kicks in and an “infinite resistance” is displayed. Just as intended? You don’t need to be Penn and Teller to spot that slight of hand.
  3. Laowei

    Kaldas Research

    Very interesting the design innovation and manufacturing development you are sharing here, Aumkar. It’s a pleasure to see such openness and transparency in this over hyped headphone market. Looking forward to hearing them when available.
  4. Laowei

    Technical Assistance/Advice Thread

    For part time use for a hobbyist, those look perfect. When cutting or hacksawing screws to length, always first screw a hexnut past the length to be cut off and then mark the cut line on a single wrap of masking tape around the screw. The tape helps the hacksaw from walking, and after the extra length cut off, unscrewing the hexnut helps straighten the mangled threads. Cleanup with a chamfer on the end using a hand file.
  5. Laowei

    Blue Hawaii Special Edition

    Best to hear from Justin on your issue.
  6. Laowei

    Hifiman Jade II

    I actually tried to get banned over there Pars. Even called John Amatto a Gaslighting Audio Whore. They just deleted both of our back and forth posts with a warning. 😂
  7. Laowei

    Blue Hawaii Special Edition

    Was the offset value measured in both channels the same @ -27V, -11V?
  8. Laowei

    DIY mini T2 Build Thread

    Quite a pretty sight, all those T2 variants in one place.
  9. Laowei

    current feedback electrostatic amp

    Really nice build, Jose.
  10. Laowei

    current feedback electrostatic amp

    Another Gilmore CFAE is first powered up. No smoke, no POP, no drama. I used the first GB split PCBs for this build. All part values per the PCB. Powersupply for the moment is a BHSE from an old KGST: B+ = +353.8; B- = -358.1 Left Channel Offset: +7.19/+10.53; Balance: 3.34; Bias(mA): 8.28/8.24/8.23/8.15 Right Channel Offset: +8.42/+8.91; Balance: 0.49, Bias (mA): 8.35/8.23/8.68/8.60 After an hour, heat sinks are barely warm to the touch. Hooked up with an iPhone X direct input as source and STAX 207 it sounds very promising. Will swap in a TKD volume pot soon to see if things improve ditching the distal volume control. Thanks to all, especially Kevin, Congo5, Joachim, Michael, and Jose.
  11. Laowei

    DIY mini T2 Build Thread

    Great work Joachim! Makes me wonder if you are a watch maker by profession.😉
  12. Laowei

    DIY mini T2 Build Thread

    Very nice, Joachim!
  13. This is great. Thank you Michael. Would you please add 1 mini T2 PCB to my row.
  14. Laowei

    DIY mini T2 Build Thread

    Depending on cost, I’d like at least one. Maybe more.