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About joehpj

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  1. joehpj

    Blue Hawaii BJT Build thread

    Not really. I think GG has better vocal while Carbon has better both ends extension and a little bit wider soundstage. BH sits between them.
  2. joehpj

    Blue Hawaii BJT Build thread

    It's finally done. Negative GRHV output resistor changed to 3.3R. 170D was substituted with ROHM in GRHV. As for sound. In Brief, the BH sits between Carbon and GG.
  3. joehpj

    stax t8000 clone (well sorta)

    How does the sound compare to T2?
  4. joehpj

    The Multi Amp aka Dynalo Mk2

    Except from K170 and J74, what else could be used as front end? K170 and J74 are long obsoleted and prices are high now. Any easier sourcing / cheaper substitution? I know linear system has some but the prices are high too....
  5. joehpj


    Stylish shoe!
  6. joehpj

    The Headcase Stax thread

    It must be a counterfeit Hawaii from China. Huawei.
  7. joehpj

    SRL300 Limited

    stax just released their new portable(?) amp. https://mobile.twitter.com/STAX1938/status/973765646667325440
  8. joehpj

    KGSSHV Carbon Build Thread

    STN9360 ran out of stock on mouser. Can I use STN9260 or PBHV3160Z instead?
  9. joehpj

    KGSSHV Carbon Build Thread

    As a Taiwanese, I don't eat choudofu. I just can't stand that smell. Laowei, please let me know when you visit Taiwan.
  10. joehpj

    KGSSHV Carbon Build Thread

    I buy insulation ceramic kits, screws, nuts, or something like that from Taobao to cut the cost. I usually buy some samples first before I buy a lot. After I bought fake 10M90S, I've never bought high voltage silicons from China. It's indeed better not to buy form China when building high voltage amps. IMHO, it was like gambling. When you hit the jackpot, it explodes. LOL
  11. joehpj

    KGSSHV Carbon Build Thread

    Buying from Chinese needs some more knowledge to know if the parts are genuine. I've bought from Taobao of 50 10M90S. Looked fine but turned out all fake. If you know which vender to buy from, of course you can save a lot of money.
  12. joehpj

    What Are You Building Today

    Whoa. Is this a power amp?
  13. joehpj

    Blue Hawaii BJT Build thread

    Any comperison?
  14. joehpj

    unbalanced/balanced to balanced tube input

    If I am going to drive high independence headphones with this, what should I do? 1) add triple darlington stage like tubehybrid/CFA did 2) add paralleled darlington stage like dynahi
  15. joehpj

    Blue Hawaii BJT Build thread

    updated the BOM. 2K trimpot changed to 4pcs. 470R changed to 1/2w. 5W zener simply because it's slightly cheaper than 1/3w .