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Happy unbirthday, Jeffy! (party favour noise) https://www.youtube.com/watch?v=_bTM8ndwxUk

Cheers Jeffy, Happy past birthdays...

Just a suggestion I haven't tried this but I would also try disconnecting the output buffer and take the feedback from what would have previously been the input to the buffer - then re-run all of these trials. very curious if the results are different

Happy belated birthday, Jeffy. I wish it was a great one.

Happy belated birthday, Jeffy!

Hope it was a good one Jeffy! Cheers!

Happy non-non-AI birthday wish

Some progress. After removing 20 pF capacitor in feedback line switching between ZF and SS bias and offset remain more or less unchanged. It seems that the bias servo doesn’t work well with capacitor in feedback line. My bias servo differs some from what Kevin has suggested in this thread. Only built one SS/ZF board so far. To be continued…

Belated Happy (non AI) Birthday Wishes, Jeffy!

Happy birthday, Jeffy!

Saw it was your BDay on my mobile, and thought I'd post when I get home....looks like we all forgot! Hope it was a great day, and wish you many many more! BTW: one of my (humorous) pet peeves are people who wish "Happy Belated Birthday." The BIRTHDAY wasn't late, your wish was!! 🤣

Speaking of wars… Massive Attack & Tom Waits - Boots on the Ground https://www.theguardian.com/music/2026/apr/16/massive-attack-boots-on-the-ground-ft-tom-waits-review-first-single-in-a-decade-is-a-dark-hymn-for-our-times

A few updates. Bought the above Obscura, but returned. Really loved the idea, but less robust than I like (Magrette Regattare being my only automatic reference). Also photography related, Increment Labs is releasing their first watch in a couple weeks with a light meter built in. That’s interesting, though the design is not. Take a look Casio lovers - https://www.increment-labs.com . Hope it succeeds. My Obscura refund money needed to go somewhere (besides the obvious savings), so being an Ohio native and a veteran, Lum-tec Watch Combat Field X5 Titanium 24H incoming. Even bought from a reseller near where I used to bike in high school. Apple Watch holds on the other wrist.

Thank you guys! Maybe your information will help me with the problem I've with my CFA3smd in SS mode. Removed feeback resistors from board and wired 50K xicons (at red arrows) from outputs to after 5K resistors at inputs. Now steady bias and zero offset. So far so good. But it's still on the kitchen table.

Forgot to post last night, grabbed dinner after meetings in Mississippi concluded. Turns out the south knows how to do chicken and waffles.

Done as well! Keep up the great work, Mikey.

Agreed, listened to it a couple of days ago.

That's My Story: John Lee Hooker Sings The Blues by John Lee Hooker (1960) https://open.qobuz.com/album/tkvkntyv6760o Example: A worthy remaster - little hot on the mic now and then, but a really good recording.

great work ! glad my post helps and yes total length of feedback loop will affect DC offset from my past experience with my own split board attempt , looks like having some oscillation ?

I think I've lost count of how many Winters I've had this year.

Reworking my CFA3 for ZF/SS switching. Inspired by ang728's hat board, I designed a split-board version. It works fine with ZF but has issues with SS: R channel: 0.2V offset, fluctuating ±0.1V. L channel: <30mV offset, fluctuating ±0.1V. Bias: Stable. Tried those solutions from previous posts but unsuccessful to solve any issues: -Removed hat board; use original jumpers for ZF/SS. -Added 680pF between B-C of output transistors. -Removed C9, C10 (20pF). -Replaced all PZTA56/06. -Swapped THAT340 / K389-J109 / K170-J74. Changing R171, R211, R272, R322 from 300R(silkscreen) to 600R(schematic) fixed the 0.2V offset, but both channels still fluctuate. Suspecting trace interference, I directly wired the jumpers to SS mode. The fluctuation is gone. So I redesign the hat board. SS resistors(R44, R49) sit on hat boards. SS jumpers and SS resistors are removed from cfp3smt2splitpre. My final result to get stable and low DC offet will be: -Using the hat board -R171, R211, R272, R322 = 600R. -Remove C3, C7, C9, C10 (600pF & 20pF) Thanks ang728, his posts helped me a lot.

Excellent article on the Michael Jackson estate’s efforts to monetize his complicated legacy. Jackson’s estate, Reed says, has “very good lawyers, they’ve got infinite money and they have a vast, valuable asset that they need to protect.” They are “monetizing it very capably,” he says. “They’re on a roll.” https://www.nytimes.com/2026/04/14/magazine/michael-jackson-biopic-estate.html?unlocked_article_code=1.bFA.tqzz.Mht9E4SWOcGO&smid=url-share

Son Andrew and I saw my favorite band The Chameleons again, his third time with me. This ranks as one of their best shows for me....incredible passion and energy throughout! First opening band was my second time seeing them, Lovina Falls. Lots of great music, and got a couple nice pics: one with Reg Smithies of The Chameleons; he doesn't pose for pics that much and when he does, he points his finger at his picture partner. I got to do the same. And Valerie Forgione from Lovina Falls took a nice pic with me as well.

Done!!