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Happy Birthday Kerry! Hope the amp business is doing well!

Hmm. So it seems pretty clear that it is something on that board. I don't recall where the tubes mount on the KGST? If they are on sockets on each board and mover with the board, then MLA's post above would be something to try as well. I would take the board out and examine all the solder connections, probably reflowing them or at least ones that look suspect. I'm assuming you have a soldering iron, etc. as from a search it looks like you built the amp? Since you are in the EU, I presume this used lead-free (ROHS) solder? Another thing you could do is take a non-conductive wooden or plastic rod or stick and poke around the bad circuit board and see if you find anywhere that effects the hum level. If so, that should narrow down an area where there may be a bad connection.

When you were checking the connectors yesterday, did you loosen the screws and reseat each wire? I presume in order to swap channels, you had to disconnect/reconnect them all? I'll be interested to see if it now stays quiet.

Someone with more experience in the stat amps should come along with some suggestions. From a general troubleshooting perspective, I presume you have checked the rail voltages and verified that they are correct? I would think they would be as biasing and the balance and offset adjustments would have been difficult or impossible if not. Given its age, I would check connections to ensure they are tight. Don't ignore the IEC ground to chassis connection. I would presume this uses those god awful* phoenix screw down connectors? I would loosen and reconnect all of those as they can loosen over time. * In my opinion. I greatly prefer pluggable connectors such as Molex, Amp, etc.

I don't have a preference and frankly never noticed it. I would guess that the previous performance was a similar layout as well. Is this somewhat at the discretion of the conductor, or is it more orchestra preference? The previous conductor was MTT who I am not a fan of.

Beth and I went to see the Chicago Symphony last night conducted by Neeme Järvi, doing the Mahler 2nd. Excellent performance, much better than when we saw this with MTT conducting back in the mid 2000's, although the mezzo-soprano back then (Lorraine Hunt Lieberman) was stunning doing the 4th movement ("Urlicht"). One of the longest standing ovations I've witnessed (> 5 mins). 90 minutes is a long time to sit (1st world problems).

Happy Birthday Brent!!

Happy Birthday Rob!

Thanks all! I took yesterday and today off, and had a quiet day, i.e. didn't do shit.

Happy Birthday Shelly! Hope you have a great one!

Happy Birthday Ryan!

When my brothers and I bought a system back in the '70s, the AMT-1s were the runner up in the speaker department, losing out to the Infinity Monitor speakers with the Walsh tweeter. Probably mostly due to bass response. Nothing else that we were able to listen to made the list. Of course that was in Iowa and our resources were limited. Interesting that Nelson Pass worked for ESS, as did his wife.

I'm not in the market for speakers as I am quite content with my Von Schweikerts, even though they are old. I was toying with going to Axpona this year, but didn't. Maybe next year and would try to listen to a horn system such as the Avantgarde's.

I've always been curious, but biased against, the horn speaker systems. I keep thinking honkiness. I'd need to listen to some good ones with some good neutral acoustic material such as classical. I could be all wet. And they don't meet WAF factors whatsoever And yes, Steve, all the PS Audio stuff kinda surprised me. I didn't know they were still around, and never thought their stuff was all that well thought of. One thing I am toying with buying is a pair of Schitt Tyr monoblocks to replace my Odyssey Stratos.

Agreed Mikey, I don't read audio mags much at all anymore. There is a set of speakers (Kii Three or Three+) which piqued my interest, either the monitors themselves or the full combo.

RIP Dickey Betts - Allman Bros. https://www.cnn.com/2024/04/18/entertainment/dickey-betts-death/index.html

Happy Birthday Jeffy! Hope you have a great one!

Any of you notice this? Apparently going to produce it; a version of Pass' beast of a thousand JFETs for electrostatic headphones. I didn't go to Axpona this year, but apparently it was there. https://www.diyaudio.com/community/threads/axpona-2024-attendees.411344/page-2#post-7655052

Happy Birthday Doug!

That wasn't even a bad necro thread, not like it was 10 years or something.

Started watching "The Gentlemen" on Netflix this weekend, and am finding it quite enjoyable. Good acting, well filmed. Stars Theo James and Kaya Scodelario.

Happy Birthday Al!!

^ I watched it (MotA), and had mixed feelings about it. I was somewhat disappointed in it, particularly compared to BoB.

Work event this week, with one of the better parties they've thrown (and they're all pretty good, this one at Reggie's Chicago). '80s theme party (though most of the crowd wasn't born then), with a co-worker's Tom Petty cover band, who were very good!

Happy Birthday Nate!