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  1. tomchr
    Post

    DG300b Build Thread

    Wouldn't that take the Y out of DIY? :) Tom
    Post by: tomchr, Dec 13, 2020 in forum: DIY
  2. tomchr
    Post

    DG300b Build Thread

    While the DG300B has been discontinued, I do now offer the design documentation, including schematics, for those who wish to build their own...
    Post by: tomchr, Oct 3, 2020 in forum: DIY
  3. tomchr
    Post

    Neurochrome HP-2 All-DIY Low-Distortion Headphone Amp

    Yep. As of 2pm this afternoon, the HP-2 PCBs (both options) and the chassis are now in stock. All preorders have shipped. You can build the HP-2...
    Post by: tomchr, Dec 23, 2019 in forum: DIY
  4. tomchr
    Post

    Neurochrome HP-2 All-DIY Low-Distortion Headphone Amp

    Yeah... Opamps have a really hard time replacing the warm glow of a mesh plate 300B. That's for sure. :) Tom
    Post by: tomchr, Nov 27, 2019 in forum: DIY
  5. tomchr
    Post

    Neurochrome HP-2 All-DIY Low-Distortion Headphone Amp

    I was writing about the 300B. The support was mostly related to tube options, output transformer options, and power transformer options. Solid...
    Post by: tomchr, Nov 21, 2019 in forum: DIY
  6. tomchr
    Post

    Neurochrome HP-2 All-DIY Low-Distortion Headphone Amp

    By coincidence, I answered a very similar question on ASR recently. Please allow my blatant reuse of that answer: The Neurochrome HP-1 (now...
    Post by: tomchr, Nov 21, 2019 in forum: DIY
  7. tomchr
    Post

    Neurochrome HP-2 All-DIY Low-Distortion Headphone Amp

    I agree that providing a gain switch would make some sense. On the other hand, I wonder how many change the gain once they've found a gain setting...
    Post by: tomchr, Nov 16, 2019 in forum: DIY
  8. tomchr
    Post

    Neurochrome HP-2 All-DIY Low-Distortion Headphone Amp

    LPS? Linear power supply? I see no issue with those. I recommend using a regulated supply in the 15-30 V range. Higher is better. It'll need to be...
    Post by: tomchr, Nov 15, 2019 in forum: DIY
  9. tomchr
    Post

    Neurochrome HP-2 All-DIY Low-Distortion Headphone Amp

    They didn't provide the performance I wanted, so I found a different solution. That also reduced the board size rather dramatically, which made it...
    Post by: tomchr, Nov 14, 2019 in forum: DIY
  10. tomchr
    Post

    Neurochrome HP-1

    Those who enjoy the HP-1 and DIYing their own equipment should check out my new HP-2:...
    Post by: tomchr, Nov 14, 2019 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  11. tomchr
    Thread

    Neurochrome HP-2 All-DIY Low-Distortion Headphone Amp

    Fellahs, I present to you the Neurochrome HP-2 All-DIY Low-Distortion Headphone Amplifier. [IMG] [IMG] [IMG] [IMG] Key features of the...
    Thread by: tomchr, Nov 14, 2019, 22 replies, in forum: DIY
  12. tomchr
    Post

    Sjostrom QRV08

    Now you just need to explain how to pronounce ich (German). :) I don't think that phoneme exists in English. I didn't realize the regional...
    Post by: tomchr, Aug 14, 2019 in forum: Headphone Amplifier Measurements
  13. tomchr
    Post

    Merv's Politically Incorrect Audio Blog

    Yeah, but what did they sound like? :) Tom
    Post by: tomchr, Jul 9, 2019 in forum: SBAF Blogs
  14. tomchr
    Post

    Merv's Politically Incorrect Audio Blog

    They must enjoy what the 300B adds to the sound. I have no problem with that. It's a personal preference - similar to using a tone control. Those...
    Post by: tomchr, Jul 9, 2019 in forum: SBAF Blogs
  15. tomchr
    Post

    Merv's Politically Incorrect Audio Blog

    True that. Someone here brought that up a while back and found the juxtaposition of a tube amp alongside my solid state amps and "good...
    Post by: tomchr, Jul 9, 2019 in forum: SBAF Blogs
  16. tomchr
    Post

    Merv's Politically Incorrect Audio Blog

    If two products both measure well across a range of parameters, science indicates that both would be rated as sounding good. Whether you then...
    Post by: tomchr, Jul 9, 2019 in forum: SBAF Blogs
  17. tomchr
    Post

    Merv's Politically Incorrect Audio Blog

    I offer designs and products that measure well across a wide range of parameters. I do so, because equipment that measures well across a wide...
    Post by: tomchr, Jul 9, 2019 in forum: SBAF Blogs
  18. tomchr
    Post

    Merv's Politically Incorrect Audio Blog

    Fine. I'll bite one more time. In Post #83 you are asking me to say whether my box or another box will sound better or whether they will sound...
    Post by: tomchr, Jul 9, 2019 in forum: SBAF Blogs
  19. tomchr
    Post

    Merv's Politically Incorrect Audio Blog

    Please re-read Post #85. Tom
    Post by: tomchr, Jul 9, 2019 in forum: SBAF Blogs
  20. tomchr
    Post

    Merv's Politically Incorrect Audio Blog

    If you only look at that one measurement, then yes. However, as I've been saying many times over, I rely on many measurements (plural) not just...
    Post by: tomchr, Jul 9, 2019 in forum: SBAF Blogs
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