Where do you guys buy replacement tubes?

"the amp blows up":tech jargon for "it broke down", which could be anything (blown resistor, capacitor) and might be
something simple or serious. It's really not possible to
try and diagnose stuff online without more details than you
are giving (and possibly some details you might not be able
to give without some experience working on tube amps).

BTW, you can buy brand spanking new (they still make them)
Cetron 6336A or 6336B from Richardson Electronics, but they're not cheap...$141.00 list. A better idea for this
tube type (or other weird industrial tubes) is try
Fair Radio, www.fairradio.com , they've got new 6336B's listed for $30 each, which is a heck of a deal.
Yes, you can replace 6336A with 6336B.

Oh, yeah, Kev, you might talk to your Fedex rep, I don't
know if they can do it where you are at, but we managed
to get our Fedex Express pickup pushed back to 7PM, which saves a lot of last-minute hustling...if you ship enough
Fedex Express they ought to be giving you a discount, too.

Uncle Ned

here the last pickup I can grind them for is 4PM. We are at the top of the street right below the entrance to Mt. Baldy. I know they pick up at the larger drop off points near Ontario Airport by 5PM.....

Don't forget we lose a couple hours on you Ned. My driver was late yesterday, here at 6PM...and here it is 6:53AM in California, and the package will be delivered on some island in Florida within a half hour. I don't know how they do it.

I don't know if I really believe Richardson is making 6336A or B....not that they would ever ever mis-represent ANYTHING...what with the great job they did re-releasing the Amperex Bugle Boy using the original burn in racks from Holland and all.

Yeah, it helps that we're not far away from O'Hare airport, which of course is one of Fedex Express' major dispatch points. We switched to Fedex Ground from UPS because the Fedex Ground guy picks up here about 3 hours later than UPS guy will.

Yes,Richardson really does/did make Cetron 6336's..like you said, there's plenty of other stuff they don't make that they relabel and sell as Amperex & National, but
not in this case. I'm not endorsing Richardson, mind you. Besides, it's kinda silly for him to be paying $141 for 6336's when he can get Tungsols from you for $40 or Cetrons from Fair Radio for $30!

Yea...they may say it...but I don't believe them if they say they do. Just my opinion, mind you. If they did not do enough volume to keep the GE 6550A line going after they bought it....who is buying all these 6336A? Why would anybody make that tube?

It's like that Mu 6900 deal. I don't buy that deal either.