JoaMat

Long shot, but a flipped 1N4007 cross STN9360 will probably give the same result as you have.

Great, will it cure excessive terrorizing posting as well?

Amazing how good he is at getting responses!

Great you found the opto servo working well. In my Grounded Grid I’ve omitted offset trimmer and its associated resistor and that works great. For time being I consider the opto servo as the preferred one.

Indeed, a really nice upgrade! I use old chassis for new boards. I even desolder components and move them to the new version/board. That way I keep number of amplifiers constant, an agreement with my partner.

and big eyes.

Wow! I also want one.

An IR remote volume control. Not built today, but brought it out in daylight today after four years. Need a volume control for AMB y3. Might work a little bit more with, it looks like …… .

Just a coincident - bought some of those for experiment from an eBay guy from United Arab Emirates.

Happy Birthday!!

TPS7A47/33 - 20 pins and thermal pad within 5mm x 5mm and need of heat sink. Seems to be a tricky one for most of us. Lovely work!

While experimenting - shut down HV with LV remaining and see what happens.

Anyone have a spice model of GRLV to share?

Thanks for info, Birgir. I’ve been thinking about the possibility to use some kind of relay in a future T2. Not sure that Omron G6A equivalent is the one to use, but if Stax can - I could try...

Seems Stax used a Low Signal Relay in their SRM-T2. Anyone like to try it?

aluminium allergy Don't like make comments on how things sound or perform. Anyhow, after several hours of listening, I like y3 significant better than my NAD M51 and Benchmark DAC2. OK, I did build it myself which might explain my view. But it's no question that y3 is a high performance DAC and is despite some SMD parts relatively easy to build.

A working y3. All right, need a nice chassis. Indeed, a very impressive DAC from AMB. I’m very grateful for all the work that have been put in this project. Thanks a lot Ti.

Happy Birthday, Kerry!

Downloaded and installed Fusion 360. Have tried it for a short while (raining today). And maybe…. even me might manage to do something with it. Thanks for the tip.

Splendid! Nice work indeed. I’ve a mill, but have to figure out how to make the model…

Yes, 10 volt is correct.

Probably because the 5V doesn’t like shunt mode. From LT1021 datasheet: Three voltages are available: 5V, 7V and 10V. The 7V and 10V units can be used as shunt regulators (two-terminal zeners) with the same precision characteristics as the three-terminal connection.

Transformers in the front (other reason than above though). You like the wiring? Size is huge. Angel brackets adds to much thermal resistance and add space.

Great! T2 current sources with c4686 instead of c3675?

Have you tried the opto servo?