I have a Rebel 30 head. It blew the 315mA fast blow fuse. I have about five to six hours on the tubes -- one gig at low volume, and a couple of hours in the basement.
My friend who has the combo version, bought on my recommendation from a different source, and he had his blow twice -- two separate gigs -- right in the middle of a set. The very fact that this topic exists is in itself evidence this problem is not isolated, and is likely much more common than they care to admit.
Look, I have a basement full of tube amps. I've blackfaced my own Twin Reverb chassis, and I've built a JTM45 from Metro. I'm not claiming to be an expert, but I've been playing for over 40 years too, and I've never, ever had this sort of issue.
If it is the tubes as they say, then those tubes, sourced by Egnater and bought and paid for by me at markup, are not of sufficient quality to be sold with that amp. But before I put in new ones, I simply wanted some assurance that those new tubes wouldn't be harmed.
To get an answer, I've been in touch with what they call "customer service." Every effort I've made to get some assurance there is not some congenital design flaw has been intercepted by an individual who has done nothing but stonewall my inquiry.
I asked for an explanation from that appointed rep, and all I got is a terse line that "it's the tubes." Well, I'm sorry, I need to know why tubes with under ten hours on them have failed. I don't think that's an unreasonable question, since I'm still using power tubes from 1973.
I told them that I'm not alone in having this problem which points to something other than an isolated misfit tube - that made no difference to him. I've asked for a contact who can answer my questions and that's been ignored. I gave him my phone number to give to someone to call me, and that's been ignored. I've read of some sending their amps back for a refund -- no such offer was extended to me.
So they have taken a situation in which I was understandably disappointed and, by their own actions, they've turned my disappointment into full-on anger. I've been going round and round on this for weeks.
This is not my fault. I love the tone of the amp. I want to keep it. I told them so, but no matter.
I can't gig with it. I can't rely on it. And I can't afford to pay for an amp I can't rely on, and I'm not going to feed it tubes. I can't afford that either. Neither can my friend, for whom I put my own reputation on the line recommending this amp only to have him suffer the same fate, except in his case, he had to bear the embarrassment of it happening during a set. Twice.
Can you imagine a manual that suggests the user carry not only fuses, but spare power tubes to every gig? Like I'm gonna take time in the middle of a set and swap tubes? Never. Not gonna happen. That's a non-starter. Had I known that before purchasing, I'd have never done it.
I find it interesting that the artwork in the manual shows a 250 mA fuse, not a 315. Did they up the rating because it was blowing all the time? I have no idea.
You see, I have questions that aren't off the wall, they're pertinent, and the guy they have answering emails will not help me to get those questions answered, nor offer me any solution whatsoever except that I should eat the cost of retubing this thing every time tubes go bad.
There's an online chat tomorrow with Mr. Egnater. I hope to get some answers, unfiltered, from the source. If I do, I'll post them here. Based solely on their lack of responsiveness, I'm starting to think this problem is growing out of their reach to handle, and they're desperately trying to dissuade customers from demanding that the amp they paid good money for work as promised.
Well, I'm not eating this one, not this time. Their so-called "customer service" has made me more determined than ever to get satisfaction.
Duane
hope to make a drop on one soon 
