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I'm sorry for your loss, Steve. 😢

My deepest condolences, Steve. I'm very sorry for your loss. May she rest in peace.

My condolences, Steve. I'm glad that you got a last chance to talk with her. RIP Ida Frances Johnson.

That's my Mom Last night I called my Mom because I hadn't heard from her in a few weeks. She sounded terrible and told me she'd been sick for a few weeks. It was obvious that she was having a hard time talking, so I told her that I loved her, and that I'd check on her tomorrow. 15 minutes later my Brother called to tell me that she passed. I told him that I had just hung up from talking to her. He said that makes sense. He's convinced that she was holding on until she could talk to me. I'm so fucking glad that I called when I did!

In this role the MPSA parts are just fine

Funny enough, I was still thinking about how to do the layout just last night—and then today I saw Kerry’s SMD version that Jomat shared. I have to say, it’s a really beautiful layout. I didn’t expect it could be made that compact, really impressive work. I’m planning to make another version inspired by Kerry’s approach. At the same time, I also ordered PCBs based on the old layout to revisit the process I went through back then. Yes, I remembered the one you posted somewhere in this thread. Don`t know if the MPSA06/56 can replace the MPSW06/56 since the power rates are different.

RIP Stan....didn't realize the connections, Wayne. Steve: I had to look up Ida....seeing obit's that are older.....not even sure who it is, pardon my ignorance. Also: RIP Mike Peters, lead singer for The Alarm. Lived with a blood cancer for MANY years, but it got worse towards the end; fuck cancer!! He did some good things to help support cancer research and help others with the disease. Morbid humor: I guess he went on down and met his maker. (see lyrics from the song The Stand).

Yeah, those are the first KGST boards I designed back in the day.

They are OS film, but the 0.5 micron version was sold out last year https://hobbyspecialties.com/product/os-film/ Only 0.68 micron version of OS7 film is available now https://hobbyspecialties.com/product/os7-film/ If you can use Taobao, there is 0.9 micron version for sale on Taobao. Search: ’0.5微米 F1D’ and you should be able to find the store. Although the title on Taobao is 0.5 micron, the actual version sold is 0.9 micron though... They are all actually DuPont CW02 PET films with special customized thickness, which are also the base film of Hifiman 'nano-diaphragm' planars and the dust cover of their estats.

Well, I consulted the old KGST folder on my computer and it looks like the first versions of KGST were with uncascoded 10M90S. Here is a picture from the KGST folder. KGST with smd parts, servo and uncascoded 10M90S. The designer is, the one and only@Kerry! See this post. Unfortunately, the pictures are gone. Board size said to be 2" x 4.5"

R.I.P. Ida Frances Johnson. If there is a better place that we go to, I'll see you when it's my time.

He’s back

In this economy?

Where is his chef’s hat? How else will he catch the egg in the hat?

Very nice! 👍 They look very professionally made. What material do you use for dust cover?

The layout referred to this(kgst-miniv05). Didn`t find the DN2540 in this version. DN2540 version added to the previous post. Q1 (MPSA/W06) can be replaced by 2SC3324. Q4 and Q6 (MPSW/A56) can be replaced by HN4A51. Q5 and Q7 (MPSA/W06) can be replaced by HN4C51.

Those look stunning!!! If you ever want to sell one those, hit me up. I've been going over your writeup on the Shangri-la as I want to build a clone of them but naturally improved (as the stock ones are pretty terrible). Find a broken HE1000 or a Arya Organic should get me close to the same chassis and go from there.

I haven't heard either of these cello concertos. Worth your time if you like Shostakovich.

you forgot the dn2540 cascode on the 10m90s

Long time no see, I have updated many different designs in the past few years. My estats are currently using an omega-like assembly structure but with a driver house made of PPS plastic, and shells are all made of CNC 7075t6 aluminum alloy + hard anodized. The tuning of my headphones has changed to a retro diffuse field target curve which is completely different tuning from stax that emphasizes 1-2khz and 4-6khz.I really enjoy the stax-style assembly method, which makes them look much more refined than German estats.

Stan Love has passed away. A basketball and music guy. Former NBA player and father of Kevin Love (hell of an NBA player). Mike Love's brother. He led an interesting life for sure. Thanks for fighting for cousin Brian. You literally kept him alive at one point. RIP, Stan. https://sports.yahoo.com/article/stan-love-nba-player-brian-174737737.html?fr=yhssrp_catchall

updated board file, 10k input resistors added (optional) and 25k changed to 17k cfaelectrostatschem2-4 - CADCAM.ZIP

Time really flies — it's been over 10 years since the KGST first came out. KGST was one of the very first DIY electrostatic amps I ever built, and it's still one of my favorites today. Recently, I noticed that the schematic in the Stax Mafia Google Drive has diverged quite a bit from the latest version of the KGST PCB layout. So, I decided to take this opportunity to redraw the schematic based on the newest KGST layout. Hopefully, this will be useful to anyone who needs a fresh reference. Please double-check the schematic before using it — there might still be mistakes. Component numbers follow the original KGST schematic as much as possible. New parts are numbered sequentially. Changes from the old schematic are marked in red The servo section has been added Obsolete parts like C2240//A1486/2SC1815 have been replaced with currently available ones Attached below is the schematic. Next step: I'm planning to attempt a shrunk-down version of the KGST layout, inspired by @JoaMat great work. KGST_2025.pdf KGST_DN2540_2025.pdf

Fried rice on the flat top is a game changer. And yes, temps can go very high. Just watch out for the sensitivity to ambient temps and wind. They are a lot more affected by that than a regular grill, in my brief experience. I had one very cold morning where pancakes almost couldn’t be cooked.