One "snotty " comment for you appears to be literally everything I do or say.
You really have a bee in your bonnet about me don't you dear??
We do things differently in Europe if you had't noticed, and NTSC is a well known joke in the EU from my pals in the EU parliament hi end all fibre video centre, laughing at the inferior US TV standard means NEVER THE SAME COLOUR,-compared with PAL which works out of the box.
Being as you are really quite humourless and it's your pastime to be so, let's say QS certainly know better what they are doiing than you do, and certainly it's total CODSWALLOP to be suggesting you need matched valves when you don't..
Exactly HOW MANY dB difference make to OP gain when you have NFB as well.
You will kindly tell me Mr expert TB?
Have you ever tried a Bogen MO200, they use 7247 in shock horror both channels and it works absolutely fine, especially if you make a few nice sweeping changes.
(QS if you recall copied quite a few Bogen amp features in the past in their amps)
So-If you knew anything about valve curves, and production spreads you would know it's in any case pointless,-so hey go on ban me from commenting on yet another thread, when I call you out on factual errors...cos it's another of your pastimes isn't it?