Anybody tried KT120 tubes on Conrad Johnson amps?

Karma if you want to upgrade your amp replace all the electrolytic caps in the amp if you haven't already. That will make a huge difference especially if that amp has the old style twist lock lytics on the high voltage side. ARC's upgraded caps have an adapter on them. They are not twist locks but with the adapter plate they provide it's a drop in replacement. Twist locks have high ESR. When I upgrade an ARC amp I always replace them. Also I don't have a circuit diagram in front of me but if you own the MKII servo and your so inclined I would find a better ic for the servo. Put in an IC socket so you can easily remove them. Servos IC's do have a sonic impact. Servos were a good idea at the time, but they're not really used all that much anymore.

HI Hifigeek,
Why in the world would I follow your advice? In a previous thread you made claims that I questioned. I asked you to back up your claims by telling us what your test methods were. This is a fair question. You refused to do so. Scientifically, your attitude is simply not acceptable and inspires suspicion.

As far as I'm concerned you are full of hot air and are just trying to impress the naive. But you can't fool me. With me you have zero credibility. I have all the test equipment and knowledge to stand on my own. Your input is not trusted or wanted.

Sparky

Wow rude and arrogant...Don't quit your day job...

Apologies to the room. My last comment was inappropriate and not constructive.

I have been using sed kt88's,and have also tried golden lions in my premier 12's.I noticed very small diferences between those brands.I installed kt120's wow!bass has explosive dynamics,very natural and effortless, a much greater sense power and ease the sound stage is now deeper and wider,midrange is also expanded and more musical the top end is at least on par with kt88's.differences are dramatic I am extremely impressed