can someone answer me this.....

Also, my unit had a bad Electro Harmonix 6922 after only a week.   Never a problem with the Gold Lion 6922...   not cheap but in my experience last longer than most NOS 6922 which are pricey .   On the CJ if you get a low hiss it's a bad tube... its like a low rushing noise that can be heard at low to moderate volumes when you mute the source

I am probably not qualified to say too much on speaker cables as mine are only 24" long with bare wire ends.
I used run Romex. Then I tried pretty expensive solid silver ones which sounded worse even after 2 weeks permanently on. In a direct comparison, the Romex sounded better. I also tried it in another rig with the exact same results. Ridiculous, huh? It put me off cables. Anyhow, that was years ago.

I’ve moved on and now run a DIY effort.
After reading that many upscale cable manufacturers us very pure copper, I tried Neotech solid core 14ga UP-OCC Teflon wire which costs a few bucks per foot. The improvement was dramatic and remains so to this day. Despite Millercarbon's argument to the contrary, I would urge folks with shorter cable runs to give it a shot. It might save you a lot of money.

oddiofy,  im been hearing that, also to get the gold lion.  but andy also recommended some others..

noromance, to problem with your observation. the one I use are pure copper from axiom speakers out of Canada.  I have a pair of their
 m100's.  I just couldn't at the time get anyone to do tri wires.  I called everywhere.  so I just brought me some bulk wire, and termination ends, solder, and went at it...they sound great.  

in a few months," a tube rolling we will go, a tube rolling we will go"..

just want to up date you on the conrad Johnson et3, got tired of the sound. didn't want to put all that money in new cords and such.  did get a siemens nos tube, all is right in the universe now.  these crappy 6922's it comes with are the problem...now it sounds like the cj gear im use to..just wanted to let you know

You should have listened to the first reply from @atmasphere ! Live and learn.