justin

thank you for your service

have to look, probably either a OPA2134 or 2132 But I also tried it without the servo and using a pot instead

I was thinking maybe Roonba or the poon as a Neil Young/Schitt homage

I've thought about making a pocketable, portable amp for Roon, does anyone have any ideas for a name?

if you still have the Brooklyn Bridge you can use it with a Roon core..if a device isn't Roon certified, you can still use it if it supports AirPlay, Chromecast, or USB (by plugging it into a computer or a WiFi/LAN to USB adapter aka 'Roon end point'). Computers don't need to be Roon certified and this includes this like NUCs get on Roon now!

Apparently the PCBs were revised to correct the errors and even add the protection circuit - but nobody remembered

I did try batteries for just about everything

Last year I ordered a lot of different boards of KG's amps/PSUs and had someone here put them together as a project. One of them was this 6DJ8 hybrid that uses the triple output buffer of the CFA3. Single-ended output only. There was 1 missing trace on the board that prevented it from working, found and fixed that, so possibly nobody had assembled one of these before. Problem is there's a substantial hiss (very easily audible with even sensitive planars, something like 0.3mV rms of 'white noise'. The +100V is coming from a TL783 regulator, tried AC, DC, batteries for heater, different grounding, gate stopper resistors, feedback caps, w/out servo..exhausted a lot of stuff but couldn't get more than a few % improvement on the noise. Anyone have ideas? th.PDF

I only saw ~2 min of the video but I assume it had something to do with measurements, my favorite part though is people wanting expensive, exotic gear that sounds different, but then acting surprised when it measures objectively worse than a Hospital DAC

happy birthday!

Happy Birthday! don't work too hard!

Birgir "It's not complete trash" for those not familiar this is high praise

That's true. I ordered a few more pairs of SR-007MK2 after finding out about this, but that's it. I have no idea if it's being replaced by something else.

Taking a photo of new boards before blowing them up later tonight they are: top - 2x 5V linear supplies 300B/20B cathode/plate cathode servo +/-12, +12 linear supply 2x GRHV