I originally found out about the upgrade when I called Mark to get a new set of tubes for my M-120's. The KT88's were going to cost me $300. As you mentioned the upgrade includes the KT88's. It also includes all the small signal tubes. I actually pulled all the tubes out of the amps before shipping them.
I asked Mark to install a set of his favorite small signal tubes instead of the stock ones. The ones out of the M-120's are still fine so I'll have something to compare them to. I always wanted to try different tubes, just never got around to it. Once I finally got my system set up properly I was happy just listening to it, didn't touch anything for about 18 months - until now. Every time I would think about any kind of "tweak" I would wind up turning the system on for a while first and then, so much for the tweaks. I could never bring myself to shut it off to mess with things... I may be in the minority but once my system is sounding good I very much prefer to just listen rather than to keep tweaking it. In fact until I talked to Mark I had no plans to change anything, just knew I would be needing new output tubes soon, and he had to go and tell me about the upgrade... :-)
Have a good day
Brad
I asked Mark to install a set of his favorite small signal tubes instead of the stock ones. The ones out of the M-120's are still fine so I'll have something to compare them to. I always wanted to try different tubes, just never got around to it. Once I finally got my system set up properly I was happy just listening to it, didn't touch anything for about 18 months - until now. Every time I would think about any kind of "tweak" I would wind up turning the system on for a while first and then, so much for the tweaks. I could never bring myself to shut it off to mess with things... I may be in the minority but once my system is sounding good I very much prefer to just listen rather than to keep tweaking it. In fact until I talked to Mark I had no plans to change anything, just knew I would be needing new output tubes soon, and he had to go and tell me about the upgrade... :-)
Have a good day
Brad