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.


skyhawk51
"You are buying a fabulous statement product that will serve you well. Both the preamp and amp are beauties. I don't know if you said what you plan to do about speakers? "

Come visit you and audition some Focals 😀 It could happen. I've been in the hobby for 40 years since at age 18 using my restaurant dishwashing job to buy Large Advents, a Sansuii 991(?) receiver and a BIC turntable. Then came constant upgrades particularly once out of law school. At age 30 or so I bought a pair of the original B&W Matrix 805's, a McCormack DNA.5 SE and a McCormack preamp (the passive buffered one whatever the model number might be).  JPS Labs made a device called "Golden Flutes" that were powered by wall warts and went in between the amp and speakers to boost the bass response and I had those. Then came the MCAudio "Full Monty" upgrade following the shuttering of McCormack. Next I replaced the passive preamp with an Audio Prism Mantissa and then came Acoustic Zen Adagios when they were the budget hot item and then a NOS ARC VS110 (a well-to-do audiophile bought two with the second as a back-up and it sat in a closet for 7-8 years in its original packaging). With the digital player market in gear I tried a PC based music server and then upgraded to the much smaller and easier Aurender N100H with an Abbingdon DP777 dac. Then came a return to vinyl with too many tables and phono stages to list but I've settled down with a Manley Steelhead and two tables that sit on wall mounts flanking each side of my main equip rack-a VPI Prime with the Phoenix PS and tach and a fully restored Thorens TD124. My dad bought the Thorens in 1959 and after daily use when I was a kid my dad left it sitting idle for 25 years when CD's emerged in '84 or so. I had just read Art Dudley's piece on restoring a used TD124 and while visiting my parents one day I asked my dad if he still had the Thorens. I suspected it might be a 124 but was not sure. As soon as I saw it again after all that time I was happy as a clam-Dad was happy to give it to me-it no longer ran. I lusted for the ARC Ref 6 as soon as it came out-I never liked the looks of the toggles on ARC preamps. The ARC GS150 sure looks better than the Ref 150 SE but they are identical but for the chasis and meters (I confirmed with ARC) and the price differential.... Sorry for the long historical background.

"anyone what were the driver and gain tubes used for this comparison? I assume stock Primaluna 12au7 for both the Premium and HP?"

samzx12-box stock tubes  Kevn was hesitant to use KT150.Plumbing was Nordost Heimdall II. I think speaker cables were Valhalla

Thanks tablejockey. Can't say I blame him for using KT150 as the HP version was running stock tubes. 
fsonicsmith you are da man.  What a fun journey.   Someone asked me today if I was ready to retire.  Hell no.  I'm having more fun now than ever.  I still collect vintage receivers.  

I'm going to be at the Focal factory in France next Tuesday and will be taking a few videos.  I hear it's incredible.  Which ones were you thinking about? 
I need either standmounts or small floorstanders. i have a dedicated room but its on the small side.