I’ll have to check out the 6H8C and try some time.
I’m really liking these Ken Rads. The 7N7 Sylvania I’m still trying to figure out if I like the Shuguang more in the output. The Sylvania seem the be neutral or what I call transparent since a lot more detail is coming through. More noticeable than the Shuguang. The 7N7 can sound a bit forward with some recordings. I don’t want to say they sound bright but the highs seem to be tipped a bit too much.
I then did a test where I turned the gain for each channel one click lower. Seems all the info I heard before is still there but the highs aren’t tipped to where it can sound bright.
I don’t know much about the gain controls. The instructions from Don says to start at full throttle so that’s where I put them. Are the gain knobs used for impedance matching? Are others leaving at full throttle or do you lower to fine tune? My OCD wants me to crank it back to full since that’s what Don recommended and I feel like I’m limiting what is going through.