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
I've got to chime in on this one as I always wanted to get ARC again. Many years ago as a young man (I'm also now 56) I owned a D125 amp and SP9 pre and then an LS1 pre. Still have the LS1 as a back-up. It was the best sound I ever had with ML speakers. However, I always had a problem with the D125 tubes arcing and glowing bright red. Changed tubes, same result. Sent the unit back to ARC for a factory check. Came back, same result. I simply got frustrated and traded it for a D400. Well that was a mistake to me. I love the sound of tubes.

Which brings me to today at 56. And I'll qualify what I'm going to say by letting everyone know I have a mild high frequency hearing loss which is pretty typical at this age. I'm building my retirement system. I had all expectations of going back to what was the best sound I've had ever known which would be ARC and ML but my gosh has the cost of all high end sky rocketed! Not that I can't afford it but ultimately is it worth it? That was a decision I had to make.

I listened to the VSI 75 in 2 separate systems as I was in the market for an integrated. I was devastated when I walked out thinking that was no where near the sound of my D125. Now I know there are a lot of factors there but disappointment was present. So I knew I had to seek another integrated as is soon time for me to downsize not only my music system but also my living quarters.

I checked out the Rogers High Fidelity. Awesome sound but like the VSI75 somewhere around 8-9 grand. What do they say? C'mon Man! So like you, after reading all the glowing reviews on PL, especially the PL HP, I saw it at a dealer and took the plunge. This was a snap decision that I usually don't do. Build quality is incredible. As good as any ARC equipment in my opinion. The tube sockets are definitely better than anything I had in my D125 or even my preamps as those ARC tube sockets were part of the printed circuit board and the board flexed when changing tubes. That may have been a reason for the arcing tubes. A broken electrical path on a board. This may be different in todays ARC production units. But back to the HP, the controls are silky smooth. The remote a solid piece of aluminum. This unit will last me the rest of my life and at half the cost of others. The sound??? Well lets just say it puts a smile on my face with a beautiful midrange, wide soundstage and solid bass. And yes, I'm still breaking it in so I expect more from it. Am I pleased? Yes. Now if I want, I can afford to get some nice solid state equipment like the PS Audio Stellar series and play to my hearts content in retirement.
"I checked out the Rogers High Fidelity. Awesome sound but like the VSI75 somewhere around 8-9 grand. What do they say? C'mon Man!"

dolfan1467-
I feel the frustration.Rogers vs the PL however, ISN'T an apple to apples comparison. The Rogers is a space heater CLASS A output, while the PL is  A/B. That, and of course Rogers is US made, separates the PL and explains the price gap along with Rogers also uses even more premium components. Build quality 
is equal. I believe the entire Rogers line are configured as Class A output.

Heard the 34S-1. Nice sonics and good looking but at $20K, that's a chunk of change I devoted to my entire system!

That said, I mentioned in an earlier post I'm a PL HP user and would love to have a rack full of USA gear. Being in the same age group as you however, I'm forced to have a pragmatic outlook on expenditure, due to retirement on the horizon.

The PL HP series does hang with the "big boys" in a good enough way. The nice thing is if you're not satisfied with it stock, a little tube and cable tweaking will  push the PL closer to ARC,BAT,VAC...territory.  Notice I said CLOSER, not it will
perform exactly like the US stuff.

Maybe that can change if one is capable technically, and swaps some of the internals to goose it a little more? Hmm....

Goes without saying good sound is the sum of all parts-source,speakers,amp,setup and room treatment.


The group that put together PL are the same European guys, plus Kevin, who brought out the Ah! Tjoeb tube (6922)-buffered CD player about a decade ago. It was built around a rather chintsy plastic Marantz chassis but as for performance and durability I can't fault mine. I had to replace the drive about 6 years ago but considering the near-constant use it got that was no big surprise, and Kevin Deal supplied a replacement dirt-cheap and talked me through the install. The group baby-sits the Chinese very hard on QC and while I've not had the pleasure of PL gear, its predecessor company set an excellent precedent for design, QC and SQ. And the Aj! Tjoeb, while relegated to the small sound system in my den now, still performs daily duties flawlessly.
Other Chinese sourced well reviewed and regarded options would be Audio Space & Line Magnetic (own the latter's 518IA) . Again from US perspective Raven Audio (Texas deisgned and built) have good reviews as well
I owned several solid state amps/pre-amps/integrated amps before moving to tube equipment. My first piece of tube equipment - in 1981 - was ARC. I've stayed with them ever since. I've owned 3 ARC amps and 1 ARC pre-amp. One of the amps required service on 2 occasions - a bad power supply cap when the amp had less than an hour on it and a bad power supply xformer when it was about a year old. Both were repaired under warranty. I had the service performed by ARC and not a dealer. It was fine when it came back both times. (UPS did a number on the exterior box with a forklift. If I have to send something in again, I think I'll use Estes.) The other two amps and the pre-amp have not had any problems. I let ARC put some new caps in when they put new tubes in one of the amps, but I'm not sure it really needed it. I think you might have had a run of bad luck. I know it's a pain to send it to ARC for service, but I think their work is a little more reliable (on average) than dealer service. I never grow tired of the audio quality nor do I ever wished I'd bought another brand.