Sure. A 5.1 kOhm resistor dissipating 1/4 W will have a voltage drop of 36 V(rms) and and 7 mA(rms) current running through it. That's not much, and I'd guess it's not enough to run a headphone properly. The usual recommendation is to use a 2 W resistor. But, again, I (and others) may be...

Can you share a circuit diagram or drawing? I guess this stuff is relevant for safety, and a mixup of the connections might turn out bad. Also, 600 V limit would correspond to about 400 Vrms for a sine signal (again, depending on the Zener connections). 400 Vrms through 5.1 kOhm is about 80 mA...

I have a High-Amp Alpha Centauri and wrote a review about it in a German forum (here). This is an English translation (via Google translate): After I've been using my Alpha Centauri (AC) for a few days now (with Stax X9000), here's a first report. Andreas Rauenbühler sent me the AC to...

@krude told me his unit is already sold.

Is this Blue Hawaii still available?

I am in Zurich city.

I am looking for a Holo May Level 2 or Level 3/KTE. I am flexible re. pricing and condition of the unit. Please PM if you have one to sell or trade.

Just stumbled over this thread. I am in Zurich. I have not read the full thread (yet), so I may be missing stuff. Are there any meetups or other things I shouldn't be missing?

I'd be interested if the meet would be located in central Europe. I am in Zurich/Switzerland, and won't travel by airplane, but train or bicylcle (yes!) would be okay.

I am looking forward to the X9000 measurements and the EQ settings! Please do let us know what you get. Will it be possible to compare the Accurate Sound measurements with measurementns from the miniDSP EARS? I wonder how consistent they are.

Any updates on this? When and how will the Cayman be available?

What do you mean by "...to modify it"? As I see it, the amp is designed around a DHT output tube with a 20x voltage gain, and there is no other DHT with similar specs. The next best DHT that comes to mind might be a 801 or 10 tube with a gain of 8x, which is more than two times lower. Other...

The Emission Labs 20B is unique in that it has a voltage gain of 20x. As far as I can tell, there is no other DHT that would provide similar gain*, so replacing the 20B with another DHT will not work. How future proof is the 20B? How are people going to replace their 20B tubes once they get old...

I looked at this thread, but much of the good stuff is in the files attached to these posts. These files can only be downloaded by registered Head-Case users. I applied for an account, but it did not get validated. I think the admins may have missed it, and I have no clue how to get in touch...

If it were due to the PCB upside down, this would mean the pinout for the XLRs on the PCB are reversed. That would be an issue with the PCB design. However, these XLRs look like the chassis-mount type, not PCB mount. It should be trivial to turn them around.