Curious_George

As "babadono" has confirmed, depth perception is affected by many factors. There may be some "impression" of depth in mono, but not what you have naturally with 2 eyes that develop normally. Individuals who perform certain tasks usually must undergo some preliminary testing to ensure they have the required skills for certain jobs, such as a pilot. They cannot be color-blind for obvious reasons. My last job in the Army was Military Intelligence (96D) satellite imagery analyst. I had to have "stereoscopic" vision to even be considered for the MOS. Then of course, your ASVAB score had to be up to par as well in the right areas. I had a friend a long time ago who had one eye and could shoot pool and beat most anybody with two eyes. He trained himself over 20~30 years how to best use what he had. When he first lost his eye, he said life was much different.

I’m not sure I can subscribe to your assessment of “mono”. It would be like covering one eye and saying “my depth perception is now better than ever”. I’ve never had any issues with balance or a narrow sweet spot, but I can certainly understand your predicament.

I love tubes, but I do have limits I will pay for a given tube. I won't pay more than 30 for a tube rectifier, which limits me to everything but a 5AR4/GZ34. I simply refuse to pay more than that. Having said that, the JJ 5AR4 and Sovtek 5AR4 should work fine in most circuits.

An NTC thermistor is a good idea too. Depending on the circuit, you have to choose the correct one.

That's all it is; two diodes mounted in the tube socket.

Opps, I did not see the SS = solid state part. I have not used these. However, if you are going to use them, you will need a power resistor to limit your voltage because the solid state diodes do not have the internal resistance like tubes, so your voltage will go up. A low impedance supply definitely has it's advantages. Instead of spending $9.95 plus shipping, you can make one for about $0.25 with two 1N4007 diodes.

My Chinese SE EL34 amp came with two Shuguang EL34’s. They seem to work pretty good in the HF87 clone, so I bought two more Shuguang EL34’s on eBay. I’ll break in the four Shuguang EL34’s good and use them for everyday use in the HF87 clone. Plus, I’m curious how long the Chinese EL34’s will last. George A said he has had good luck with some of the Chinese pentode/tetrode tubes.

I have used all of them. What kind of feedback are you looking for?

So Planet of the Apes may be a real reality huh? Could be, but taking everything into account, homo sapiens are just a click on a geological clock in reference to astral time.

Was PWK a fan of Primus? Wynona’s Big Brown Beaver?

I am quite modest in making a mess of things, but thank you. I’m quite proud of my accomplishments. Rock on.

The truth is not kind most times. We know where you stand.

Well at least he knows how he might be viewed.

The power of suggestion…