Received the tube adaptors in the mail today. They're well made, feel solid, and do the job. The Woo ones definitely look better. Will let u see for yourself..
With the we417a tubes in, feels kind of like candles on a birthday cake LOL.
Anyways, first impressions are I like them. Seem to shift the whole FR to the left, with more low end and mids. And at the same time, they have smoothened the top end a fair bit. It is not as jarring as the upgrade 6c45p drivers, especially with the Abyss which can occasionally be a bit piercing with certain songs. Front back depth is a lot better IMO.
I have some issues with the tubes though. With volume knob at zero, I get a loud hum from the R channel (have not swapped tubes position yet), but if I raise the knob up past 8 o'clock, the hum goes away and it is silent. Not sure why this is happening.
*edit
Turns out it may not be the tubes, but the adaptors.. Tried swapping around tubes, but the hum seems to follow one of the adaptors instead.
*edit2
Deyan is going to send me another adaptor. Grateful for the quick response.