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
Hello Kevin,

Thx for hosting the party and I really enjoyed it.  Glad to meet with other folks with the same interests.  Bob, it was a pleasure to meet you as well.  Let's do that again with other gears in the future, I am sure it will be fun!

I am also impressed with the HP integrated amp.  Let's talk some more when you get back from Europe.

Allan
@fsonicsmith 
Quoting you "Generally speaking, modern ARC gear tends to be fairly "in the middle" between classic tube and ss sound and I understand PL to be a bit more on the tube side of the spectrum." If you'll read my comments above, I thought the EL34-tubed DiaLogue Premium HP sounded very similar to the ARC VSi75 with KT150s. The listening didn't really bear out your assumption. But I do agree that listening over a much longer period of time would show more of the minute differences in these fine integrated amps.

Please see Kevin's post several days back on 07-14-2017 2:06pm, where he has provided a link to the Taste of Tubes document you mention. He also mentioned later on that he hoped the readers of this thread had downloaded that document.

Indeed a comparison between top ARC and PL gear would be fun. Kevin never claimed his gear were giant killers and but in fact he did say "I would be ecstatic with any of them, and would prefer them to a stack of reference solid state separates." 
"But I do agree that listening over a much longer period of time would show more of the minute differences in these fine integrated amps."

Hello pokey77-these amps were so close, that to REALLY discern the differences IMHO,I need to hear just 3-5 second "snippets" and IMMEDIATELY have the ability to switch to the other amp. Even though Kevin did a fine job of switching, it's just not fast enough.

My  sonic memory just isn't that good.

On a side note: I'm discovering the PL HP really does need to be opened up to hear what a fine piece of equipment it is. I listened to that SRV cut  at a very high level-3:00 o'clock, and my speakers really came alive. I played "Tin Pan Alley" from the record I purchased in 1984! WOW

Thanks Kevin and enjoy your trip.  I appreciate your throwing this together and also for changing up some of your approach at some of the suggestions.  I think you really got a more interesting set of results than you might have otherwise (great call on the 3rd amp). 

And for those who participated, thanks very much for your reports on your impressions...very interesting.

At the risk of sounding like a total KT150 fanboy (I may be!), I was interested to see how that variable might shake things out.  I truly think it's a special combo with the PL amps AND the ARC amps...the PL HP in my case really went to another level.

However, I realize it's been a while since I've had the PL-provided EL34s in the amp, so I'm going to do my own comparison and go back to the EL34s that shipped with my HP for a few days and see how they sound again.


@parsons
here are Kevins comments on EL34 vs. kt150 from Page 4 of this thread. "I use an HP at home with KT150's and it's amazing.  But it's not night and day from a stock one with EL34's.  It's a small nudge."