Considering switching from Audio Research to PrimaLuna, troube with VS115 amp


Hello everyone, I have question that I hope some of you either can answer or have an opinion on. Ever since I was 17, I have always wanted to own Audio Research equipment. I’m 56 now, and finally was able to fulfill my life long dream. My first acquisition was an ARC LS15 pre-amp bought here used in mint condition. I paired it with a Vincent 331MK hybrid amp also bought here used in mint condition. The resulting sound was impressive. After that, I started looking for an ARC amp I could afford. The resulting search found me an ARC VS115 amp also here in used, awesome condition. This is where my problems and my doubts started. Upon hooking up the amp to my system, a tube in the left channel arced and blew a resistor. I had to take the amp to an ARC dealer and he installed a new resistor and suggested I buy all new tubes from ARC for the amp. I did and when I got back home, I again hooked up the amp and immediately upon turning the amp on, I started to hear thumping sounds coming from my left speaker, then, two left channel output tubes started to glow a very bright orange, and then white smoke started to rise from one of the tube sockets. I immediately turned the amp off. I called the dealer and he suggested I mail the unit back to ARC. I did and I am now waiting to see what they say.

During this time, I started to search out other brands and came across one called PrimaLuna. I have watched their videos and seen them compared to ARC equipment. Their build quality seems to be superior to ARC and the reviews are over the top. I am looking at their Dialogue Premium HP amp and their Dialogue Premium pre-amp. For what they cost, considering how they are built and supposedly sound compared to units costing 3 to 4 times their price, they almost seem too good to be true. Anyway, my bubble has been burst, and in simple terms, I am considering jumping ship and going with another company instead of ARC, despite all those years of drooling and waiting.

My main question is this, is there anyone out there that either owns PrimaLuna or has had experience with the equipment and can give me their opinion on owning and using it. Then, my second question is how does PrimaLuna really compare to other high end equipment such as ARC. Kevin Deal in his videos on PrimaLuna makes a very compelling case for the equipment. In one video, he compares an ARC LS17SE to the PrimaLuna pre-amp.

My last question is in regards to my ARC VS115 amp problems. Anyone have an opinion on what is going on with my amp or a VS115 in general. For those of you who want to know what else is in my system, I am using KEF 104ab speakers, a Cambridge Azur 752BD Blu-ray player as my CD player, Morrow Audio Cables and I am considering getting the Sony HAP-Z1ES music player for my digital files.

I greatly appreciate all who take the time to comment and give their opinions. I will be glad to answer any questions you may ask or provide additional. Thanks for your help. Steve.


128x128skyhawk51
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Sometimes people step into a listening session with preconceived notions.  A certain project is definitely better than another, etc.  Which impacts their "subjective" listening perception.

In this case, this is a simple listening session of two products that are gain matched to hear sonic differences if any.  I don't believe that in this case double blind testing is really necessary.  Just play the music and move tell us what you thought.

I also feel that both projects should be demonstrated as they came from the factory.  With the tubes that the manufacturer supplied. Tube rolling may be fun (and expensive), but is not how this should be evaluated.  In my opinion.

I live in the LA area, but can't make the demo on Saturday.  It would definitely be fun.

Don't play with cables.  Just play one device, turn it off, connect the cables to the other device, turn it on and you are good to go.  I have a problem disconnecting cables from "amps" while they are on.  I have seen several time "careful" dealers do that and short the outputs, damaging the amp.  It was unintentional, but it happened.

Best to be safe.

Looking forward to reading the results.

enjoy 

I've left the ARC on overnight, and it sounds a ton better when it's super hot it appears.  For that reason, I'm not turning off the amps.  I know how to do it, and they have to be hot.  

So I think I will compare the ARC VSI75 and a PrimaLuna HP.  They are both glorious.   
In the old days, I bought into the Audio Research legend with an early transistor amp (D-100 maybe?) but it was lousy sounding and had to go back to the factory a few times for repairs until I finally sold it.  The sound is probably as the post I read in the beginning of these posts reflect.... re: the overtone series, however, today - even yesterday...transistors can be as musical as tubes.  (Ayre et al)