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  1. gibosi
    Post

    The Unthinkable Has Happened: The Sennheiser HD700 is now listenable. The HD750 mod.

    That's too bad.... But as cheap as they are, I guess I shouldn't be surprised...
    Post by: gibosi, May 9, 2017 in forum: Modifications and Tweaks
  2. gibosi
    Post

    The Unthinkable Has Happened: The Sennheiser HD700 is now listenable. The HD750 mod.

    Tak... You indicate that you liked the Sony MDR-605 pads more than your modified stock pads... I found replacement pads for the MDR-605LP on...
    Post by: gibosi, May 7, 2017 in forum: Modifications and Tweaks
  3. gibosi
    Post

    SuperBAF Cheap Tube Amp Guide ~$1200 or less

    Yes, the possible customization is limited only by one's imagination, budget and yes, feasibility. :) That said, the base Glenn OTL is $700, with...
    Post by: gibosi, Nov 21, 2016 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  4. gibosi
    Post

    Glenn Studio Amplifiers

    In my experience, rectifiers often do have a "sound". And I wonder if it might be due to some of the same reasons you list above? It seems to me...
    Post by: gibosi, Nov 4, 2016 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  5. gibosi
    Post

    Glenn Studio Amplifiers

    What is the configuration of the HEXFRED rectifiers you build that fit into a 5-volt octal socket? I would assume that they are comprised of a...
    Post by: gibosi, Oct 6, 2016 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  6. gibosi
    Post

    Glenn Studio Amplifiers

    I suggest we consider a similar question because the answer is likely the same: Does anyone know the reason why double triodes from different...
    Post by: gibosi, Oct 2, 2016 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  7. gibosi
    Post

    Glenn Studio Amplifiers

    For sure, I was speaking very generally using my ears and gear. :) But it is important to remember that whether B+ is actually "higher" depends...
    Post by: gibosi, Oct 1, 2016 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  8. gibosi
    Post

    Glenn Studio Amplifiers

    I believe your amp came with 42EC4/PY500 rectifiers. Other Glenn owners whose amps use these rectifiers indicate that they hear no differences in...
    Post by: gibosi, Oct 1, 2016 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  9. gibosi
    Post

    Glenn Studio Amplifiers

    I have one mercury-vapor rectifier, an AX50 (that requires an adapter to drop 5 volts down to 4). The couple times I used it, it sounded pretty...
    Post by: gibosi, Sep 30, 2016 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  10. gibosi
    Post

    Glenn Studio Amplifiers

    I like the HEXFRED very much. Perhaps due to the B+ being 16 volts higher than your design value, the presentation comes across as very fast with...
    Post by: gibosi, Sep 30, 2016 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  11. gibosi
    Post

    Glenn Studio Amplifiers

    My ears are not good enough to be able to differentiate between two tubes of the same type, made by the same company, at about the same time, with...
    Post by: gibosi, Sep 26, 2016 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  12. gibosi
    Post

    Glenn Studio Amplifiers

    I am not an electrical engineer, so this is an intuitive understanding. I would absolutely welcome a better explanation. :) Yes, in my...
    Post by: gibosi, Sep 25, 2016 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  13. gibosi
    Post

    Feliks-Audio Elise Tube Amp Review (NOT)

    My take on this is that for most of us, this is a hobby. It is not a business. People buy their own equipment with their own money. And if they...
    Post by: gibosi, Jun 25, 2016 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  14. gibosi
    Post

    Feliks-Audio Elise Tube Amp Review (NOT)

    That might be true for some, but I assure you that the major reason I roll tubes is to obtain better sounding music. That said, I will be the...
    Post by: gibosi, Jun 25, 2016 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  15. gibosi
    Post

    Feliks-Audio Elise Tube Amp Review (NOT)

    But that doesn't change the fact that the correct bias for a 6AS7 is different than for the 5998. And the correct bias for the 6SN7 is different...
    Post by: gibosi, Jun 25, 2016 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  16. gibosi
    Post

    Feliks-Audio Elise Tube Amp Review (NOT)

    But this is more common than one might think. The 5998 is electrically quite different than the 6AS7/6080, with a higher mu and transconductance,...
    Post by: gibosi, Jun 25, 2016 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  17. gibosi
    Post

    Great tube amp...advice needed

    The DNA Stratus uses a Russian 6N1P as a driver. As you note, the pinout is the same as the 6922, however, they are not the same. For one thing,...
    Post by: gibosi, Apr 22, 2016 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  18. gibosi
    Post

    Noob questions about Lyr 2

    The difference between the premium E88CC/6922 and E188CC/7308 and the plain-Jane ECC88/6DJ8 is more than gold-plated pins. These premium versions...
    Post by: gibosi, Apr 2, 2016 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  19. gibosi
    Post

    Noob questions about Lyr 2

    The more expensive pair test a bit better. That said, both pairs test new. Otherwise, they were manufactured in the same factory at about the same...
    Post by: gibosi, Apr 2, 2016 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  20. gibosi
    Post

    Noob questions about Lyr 2

    EC88/6DL4 is a single triode and will not work in the Lyr. What you want is the ECC88/6DJ8, a double triode. And if you want to spend a bit more...
    Post by: gibosi, Apr 2, 2016 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
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