Where do you guys buy replacement tubes?


I'm sure it's been covered, but I haven't found it. I'm looking to replace my sons tubes in his amp. We have had some bad experiences to date with suppliers and I would like your recommendations on good suppliers. His amp uses 6336A tubes, a real odd ball, so the supplier needs to cover alot of types I would guess. Thanks for your help, J.D.
jadem6
Ditto fpeel regarding the outdated notion of the customer *always* being right. Separately, my experience with Kevin (I've preordered a CD player from him) have been fairly good (my only complain being that it would be nice to be emailed about expected delays to shipment). While he is not lightening quick in his responses he does seem to care about the customer and insuring that people get what they want. He's never come off as snooty to me. Coincidentally I was about to ask him for recs on replacing tubes, but I think I'll wait till things calm down a bit over there.
No need to worry about it being to busy if there is something you need...that's not where it's at.

The delays are not happening much anymore except for odd stuff. The things we do every day go out the door pretty quick.

I just made an agreement to have the best talent in the industry custom make a new tube burn in rack and matching fully regulated test rig.

What we have now is good, but we actually use power amps to do burn in before matching, and sometimes the amps blow up (better mine than a customers)and I have to perform surgery to fix them. Then we use a pre-heat rack before testing the tubes one at a time. The new rigs will burn in 20 at the same time, then the test rig will have 20 at a time getting up to operating temp while one is being tested. Super cool.
Kevin, what do you mean "the amp blows up"? I'm wondering if that isn't what happened to my sons amp. What would I look for? Thanks, J.D.
"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