I think you are fine. If you purchased a good set of tubes from Upscale that is wonderful. My experience was different. They said the tubes were matched and within Audio Research specs. They weren't and it cost me over $3,000 to repair.
I've purchased pre-amp tubes and phono stage matched tubes from Upscale and they were fine. Wouldn't have a problem doing that again. apologies if I gave the impression I wouldn't ever. I'll just be more careful with power amp tubes. That could be/was a costly mistake if they fair.
I'm sure Upscale would have replaced the faulty tube, but they probably wouldn't have covered the repair costs of the amp. Audio Research would. But the tubes are probably twice as expensive. But, AR does test and match each tube, and that does take time and expense to do that.
Also, I appreciate Kevin's response above. It was well written and I really appreciate him stepping up with a response. The Prima vs Audio Research REF 6 was an actual event that a good buddy of mine experienced. I didn't appreciate the sales pitch where he was flatly told the prima was better. That was crap and was unnecessary. The Prima is a fine pre-amp for the money. The REF 6 way more expensive and not in the class or range of the Prima. Telling a potential buyer that solves the issue.
That is like a mid range car vs a high end supercar. Not even a fair comparison and who in their right mind would even compare the two? Well, the rude people on the old top gear show maybe. They compared a Camaro with a top of the line Mercedes AMG. Stupid comparison. not even in the same class or price range. But, they really didn't like the USA, so there you are.
So, why compare a REF 6 with a Prima? apples to apples would be better. I've dealt with many fine dealers. I've never done business with dealers that do that. comparing a unit that is in the same price range or quality of a Prima? I have no problem with that. As a matter of fact, that is exactly what should be done.
enjoy
I've purchased pre-amp tubes and phono stage matched tubes from Upscale and they were fine. Wouldn't have a problem doing that again. apologies if I gave the impression I wouldn't ever. I'll just be more careful with power amp tubes. That could be/was a costly mistake if they fair.
I'm sure Upscale would have replaced the faulty tube, but they probably wouldn't have covered the repair costs of the amp. Audio Research would. But the tubes are probably twice as expensive. But, AR does test and match each tube, and that does take time and expense to do that.
Also, I appreciate Kevin's response above. It was well written and I really appreciate him stepping up with a response. The Prima vs Audio Research REF 6 was an actual event that a good buddy of mine experienced. I didn't appreciate the sales pitch where he was flatly told the prima was better. That was crap and was unnecessary. The Prima is a fine pre-amp for the money. The REF 6 way more expensive and not in the class or range of the Prima. Telling a potential buyer that solves the issue.
That is like a mid range car vs a high end supercar. Not even a fair comparison and who in their right mind would even compare the two? Well, the rude people on the old top gear show maybe. They compared a Camaro with a top of the line Mercedes AMG. Stupid comparison. not even in the same class or price range. But, they really didn't like the USA, so there you are.
So, why compare a REF 6 with a Prima? apples to apples would be better. I've dealt with many fine dealers. I've never done business with dealers that do that. comparing a unit that is in the same price range or quality of a Prima? I have no problem with that. As a matter of fact, that is exactly what should be done.
enjoy