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Tried a relatively new restaurant near us, Kirkwood. Short rib and old fashioneds very respectable. Service was super. HS

Yes, those. Will have a look with the scope on the output but it'll be a while, I've put this project away for a few days while waiting for the right top and bottom chassi plates.

Thanks for the information. It looks like 5pF is also stable on my build, although I’m using the SMD version of the power supply boards. When you mentioned the “dual current sources”, what exactly did you mean? Are you referring to the two current source stages before and after the power supply on Kevin’s latest board? I’m using PZTA42 for Q9/Q10 instead of TTC004A, so perhaps that’s something I should investigate next. I also have a pot at the input, just like your build. If you have access to an oscilloscope, could you check the O+ and O− outputs? On my board there’s a roughly 120kHz sine wave (it changed to around 96kHz after I experimented with MLCCs on the RKZE outputs), and it seems to be related to the isolated DC/DC supply. I’d be interested to know whether your board shows the same behavior, even if it’s not audible.

Did some testing last night on a second build I'm doing for a friend. Psus regulate and are stable with 470pf in place, at least for the 20 min I left it on (Kevins latest board with dual current sources). Have no noise either (never had on a Carbon), but have a pot in front. Also, I'm using TTC004a rather than pzta42 as drivers for Q9/Q10.

I checked the datasheet as well. Since I’m already feeding the converter from a GRLV, I don’t think the input side is the issue. One interesting thing I noticed is that the datasheet for a compatible replacement part (with essentially identical specifications) recommends adding an LC output filter for noise-sensitive applications. The example value is around 0.47µF on the output. I don’t have any 0.47µF MLCCs on hand at the moment, but I’ll probably place an order next week and give that a try to see if it helps reduce the remaining noise.

Damn, that sounds intriguing. Will give it a listen.

The Bay Area instance of The Spazzmatics. Chain Band? Think Blue Man Group.

Sharing a Chocolate and peanut butter, marble raspberry at Tuckers

@swt61 - very cool that you got to see Charlie. He came through H-town with Leon Bridges and unfortunately we were traveling so I missed that opportunity. I look forward to getting to enjoy him live one of these years... HS

(Fog City) Swampers playing their CCR set at the Downtown Alemeda Art and Wine Faire

I’ve just finished binge watching Ann Droid. More than entertaining, I’d say.

Last night's fresh caught walleye fry. My sister in law and I caught them and cooked them up.

Finally The Unsung Adventures of Punch Brothers by Punch Brothers (2026) https://open.qobuz.com/album/itmcb0mrpbqud Example: I have been waiting for this since April. Of course I am happy about the addition of Brittany Haas to the crew, being a long term fan. They do plenty of the Punch Brother's alt-folk things. All instrumental this time.

Star City wins for 2026’s Most Ridiculous Season Finale!

As the tour comes to a close, nice NYT piece on the business side of things. Shame the ASO is so conservative. I would love to see them work to grow the sport. https://www.nytimes.com/2026/07/24/business/tour-de-france-amaury-aso.html?unlocked_article_code=1.0VA.bUGg.jEXh-T33IBhx&smid=url-share

there were no output caps on the switchers. there is a input cap, not labeled, 47 uf tantalum 30 volt is what goes in that spot. or anything else that fits.

Python Script Remix Vol.10 - Sonic Youth “This mix is part of our "Python Script Remix" ongoing series. Process : 1. First we made a parallel mix of the 13 tracks from Sonic Youth's album "Goodbye 20th Century" (released in 1999 on Sonic Youth Records). 2. Then we applied various effects to the mix through a Python script, such as a subtle pitch shift with extended feedback, a slow time-stretch with noise-heavy textures, a slow spectral feedback, a smooth saturation with harmonic enhancement, a natural high-pass filter, a wide low-pass filter, a soft EQ, a slow spatialization with noise-based trajectories, a transparent limiter and a fade out. This remix is conceived as a spectral extension of "Goodbye 20th Century", it is a work of amplification, stretching, densification, and slow spatialization, yet without altering the original aesthetic.”

I ended up switching back to the 5pF capacitor. With 470pF, the nearby STN9360 starts behaving incorrectly, so something in my implementation clearly doesn't like that value. I replaced the output capacitors on the switching supply with four 0.1µF/50V MLCCs, just as Kevin suggested. After doing that, the ripple on O+ and O− at around 120kHz dropped to roughly 96kHz. At this point it seems like the tiny residual hiss may actually be related to the switching supply rather than the amplifier itself. What I'm not sure about is whether a 120kHz switching component could somehow be demodulated or otherwise make its way into the audible band.

Just finished watching. Entertaining.

TdF

I'm looking forward to those as I'm slowly working on my own version just for me, i.e. fixing how they sound. :) I got these recently: https://poloyoaudio.store/products/hongshu-eh1 It is my third one of these as they design has been maturing over the years. I'm waiting on a replacement set as mine had some noise issues in one driver so I'll do a proper write up as they arrive but I do like them a lot. The earpads are crap but there is a lot of potential there.