Good idea to swap McIntosh amp stock tubes?

@chickenoregg 

"MC275 = 2 channels @ 75Watts @ 8ohms"

Ah no, the above is at 1Khz and not 20Hz - 20Khz.

"If you were responding to me, let me be clear that I didn’t say they came with poor quality tubes. I said they were fine but don’t sound as good as NOS tubes. Respectfully, I don’t think I’m the one that’s being misleading. 

Were I you friend, I’d be careful where you throw rocks when it comes to who has knowledge and who doesn’t. You blatantly quoted the wrong spec for an amp that is named literally for how many watts per channel it has, and then started hurling rocks at me while you called me a dummy. 

I swear I couldn’t make this stuff up if I tried."

You know what's hysterical? If you look at the posting date and time, you'll see that we were typing at the same moment and I never saw your post! 

@faustuss 

My bad. Let me make that up to you.

Here's a code for all the free JJ tubes you might ever want: 5687. It's an in-store only promo code though, so you'd have to drive to my shop to use it. When you arrive, make sure you park in the back. After you've entered the code, make sure you kind of tug on the lock hard enough (sometimes it seizes up with whatever kind of disgusting ooze the crackheads have slobbered all over it) otherwise the dumpster won't open and you'll have wasted even more of my time.

sooo.. based on couple of of “tube experts” opinions, conclusion is a McIntosh engineering design team is clueless when the time is to pick tubes? LOL

JJ tubes (former Tesla) are just fine, just need to test them properly, before plugging in, as any other brands. I have Luxman state of the art MQ88uC amp, and replaced original Luxman tubes with preselected JJ ones, without any problems, measured / listened! 

I’ve owned the 275 and currently have the 1502.  In my experience, the stock tubes are not the best.  In both amps, the Sophia Electric KT88s were a huge improvement.  I’ve been using NOS Mullards for the 12ax7 and 12at7 for years with no issues.