What is the "sound" dif. between a Joule -Elctra OTL and a SET amp??

As for MKIV versus MKV, I believe it has to do with the use and implementation of circuit boards. I would call Rich at Signature Sound. He would know the answer.

thks- No that is not the pair- I think I will call Rich- Since my time to listen is limited not sure if I want to have to bias every tube all the time- It would take me longer to set up then it would to listen it seems-

Hi Thaluza,
You had the unique experience to compare two exceptional yet different amplifiers for 7 months.  Which amplifier provided more emotional involvement and communication with your musical soul? Does one offer more realism? 
Thanks,
Charles,  

The T-1s can use the additional power unless you are in a really small room. I use T-3s, which are the same efficiency and impedance and my preference is our M-60 amplifiers which can make about 80 watts on this speaker (the M-60 is also an OTL).

But I've used SETs many times and am able to run them out of gas. My room is about 17' x 21' and not particularly lively. I found the SETs to be harsh by comparison, but that is compared to our M-60s. With most SETs once you push them past about 20% of full power the higher ordered harmonics start to kick in and that is likely the source of harshness.

The T-1s like my T-3s go well into the bottom octave. SETs don't do so well with that- if you really want a relaxed presentation and the ability to play **anything** at life-like levels, you will want a bit of power and no mistake, SETs don't have it in that regard. The T-1 is a highly revealing, complete bandwidth speaker so you will want to give it your best shot!

Fluffers,
Is it possible to compare your Wyetech with the Joule at home? Nothing beats a direct comparison in your system. 
Charles, Sent