Edit: Unbeknownst to me, the following happened with the mute button on the amp engaged, which cuts 20db... See over the page for further measurements.
OK I figured out what was wrong with the 110W Yamaha amp I borrowed from my friend. The loop out jumpers were missing...
So with that rectified I measured the voltage either side of the TR2 transformer, with a 440Hz sine wave.
With 1V in, I got 23.1 out with the H2 connected and 33.7 with the H2 disconnected.
With 10V in, I got 200 out with the H2 connected and 290 with the H2 disconnected.
With 15V in, I got 303 out with the H2 connected and 420 with the H2 disconnected and the Yamy smelt like hot electronics. Don't tell my friend! (JK Mike, it was fine)
After measuring with sine waves, listening to loud rock music with the amp at full output I saw well over 200V coming out of the TR2, peaks up to nearly 300. This was with an RMS voltmeter, ranging normally around 150-250 V for the section I was listening to (Propellerheads).
This was about as loud as anyone could ever want to listen to music, distortion wasn't bad though, the amp wasn't clipping or anything. For an equivalent listening level, bass was much better and deeper than with the RPX-33.
Listening to some Classical stuff at the same WFO level though, I would still want more power at times. Amazing sounds came out still, in the Shostakovitch piano concerto flac from the Philly Orchestra I could hear musicians breathing, coughing, sniffing, moving papers, their feet and heaps of new sounds I didn't hear before, all of which are at a minuscule volume level and unnoticeable at high volume with ED9 and RPX-33. Huge soundstage, very convincing for me!
Also, I tried the HP out of my imod and each little click of the volume wheel is highly audible, the sound pretty average. Through the imod and V-Cap dock, well that's a topic for another thread but I was grinning. I wasn't listening critically anyway tonight.
I did try the Yamy amp without the TR2, just made a 4 pin XLR female to banana adapter, and the sound was way too quiet for my likings. I didn't test properly as the house was noisy and I didn't have time.
So now I need an amp capable of well over 200V.
A transformer that doesn't suffer from the bass roll off issues of the TR2.
Don't know which way to go, I have had some advice that Magnequest make excellent transformers, and other advice saying that transformers aren't the way to go, but a high voltage SET or SS amp is.
I respect both opinions a huge amount so will have to continue the research.
I did a little vid of one of the sine wave tests but the other vids are even worse quality so I won't bother:http://media.putfile.com/Yamaha---TR2-test-440-Hz-Sine-