Yes It can take all these.
And it can drive lower impedance headphones if you try 6336 output tubes
inplace of the 6AS7. you just have to use a powerful rectifier with them.
3DG4 , 5AU4 , GZ37 no 5U4G maybe a 5U4GB or 596 will work with these tubes.
Faster transient and impulse response. Something SS amps are traditionally better at than tube amps, but it all comes down to design. Generalizations mean nothing in the face of talented design I have found.
Glenn's OTL design is much more flexible than the WA2, it drives low impedance headphones with authority which is unusual for an OTL design. It has moved away from the 5998 toward the 6336 because both Glenn and I have had headphones blown up by 5998 tubes with shorts. The 6336 is a demanding tube in terms of current draw, most of the rectifiers you mention are not usable with this setup. Even the 6AS7 will overtax many of them. But, like I mentioned the other day the 3DG4 sounds really good and costs nothing. Why spend all that money on different tubes when you don't gain anything from it in terms of performance? If you like to roll just to get different flavors the 6SN7 driver stage is the one to roll for fun.
Just my 02 cents.
i guess i just like tube rolling and the fact that i already have all those rectifiers
whats the 3DG4 like?
I own a few pairs of shoes. Each serves its purpose. If I had to decide on one shoe to be the best of all shoes it would drive me nuts--let alone wreck my feet. That's why I own a few amps and a few headphones and why I don't really try to best one over the other. Just saying. :) Right Ultra- ?
Building this amp I realize why I stopped using the small chassis
The new power transformer I am using is larger and I am having a problem
fitting everything on the top of the chassis. so I have to move the filter
capacitor under the chassis ware there is already no room.
Putting 100lbs of s**t in a 10lb bag
The transformer in your amp is bigger then the rest because the filaments of these tubes are power hogs.
that transformer has a separate 6.3 volt winding for the BL63 and the voltage quadrupler for the multi
The transformer that I use in my other OTLs is not much smaller
I don't use that transformer much because it costs to much to ship the amp. And it would be way to much
to ship that amp to Europe .
I think a quality 14ga or 12ga power cord would help nothing ridicules in price though.
I use a single high output AC power isolation transformer for all of my video and audio equipment. It helps to get some of the crud out of the AC mains. A double conversion power regenerator will cost more money than I have for the equipment on hand. Here is a bit of my history on this subject.
Being content most of the time, I'll probably end up with four corners, an iPod....... and da killa playlist!