McIntosh tube upgrade - worthwhile?

It’s strange but why is McIntosh and inclined to tell people stock power cords and stock tubes are not worth upgrading. Most manufacturers sell mediocre tubes and power cords along with their equipment because they know people are going to upgrade it all by themselves.

But McIntosh makes an emphasis to say hey we have designed  amplifiers in a manner that doesn’t make higher quality tubes meaningful. Actually JJ tubes tend to go bad more frequently as I’ve replaced many at this point after just a few months. they Buy them by the batches and they don’t quality control the tubes. Why would they quality control tubes when it doesn’t matter what they put into their devices according to them.

Very strange attitude they have. But I have a few of their amplifiers because they are built like tanks and they’re reliable for the longer term hopefully.

@wbs 

Thanks I looked for it and actually ordered it. Any chance you could share what might've been said about amplifiers effect tubes and anything else about the depth of info they go in to about McIntosh amplifier.

As a reminder this thread is about whether tubes on a Macintosh amp makes sense to change.

It's not a marketing opportunity to sell tubes.

It may turn out that it doesn't really matter what tubes you use in a McIntosh amplifier.  The amplifier sounds pretty darn good with the JJ stock tubes but could it sound better with different tubes? That's all