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

Showing 6 responses by lalitk

As a ARC owner, I can say unequivocally that their new 'Foundation' series offers great performance and are quite affordable in direct comparison with their Reference line up. If you like the house sound of ARC, you won't be disappointed with any components in Foundation series. I end up getting the LS28/VT-80/DAC9 for my rig and couldn't be any happier. 

I have been in this hobby for 20 plus years and I agree with most of you that the cost of high end gear is gone way up.  

Enjoy! 
@fsonicsmith , well said ~ "Very detailed in a non-fatiguing fashion living up to the "High Definition" moniker". 


+1, @tubegroover ~ I agree with your feedback on ARC gear. 

@pokey77 - Glad to hear you that your were able to audition and enjoyed the excellent combo of LS28/VT-80. I have recently upgraded my system with Nordost grounding unit (QKORE6) and improvements were far from subtle.  I won't go into any more details here, better save it for another thread :-)
@jhills, I love the auto-bias feature on my ARC VT-80 amp. I think this should be one of those 'must' have feature on every tube amp. 

Speaking of ARC reference amps, I was fortunate enough to sit through an audition of REF250SE, REF6 with Sonus Faber's Lilium speakers....l was quite blown away by larger than life soundstage, imaging and a sense of realism. 
@jhills, 

"Does the new ARC reference amps auto-bias or can the owner, at least, easily adjust the bias at home, or change out a tube" 

Yes to all except auto-bias feature. The amp is equipped with self bias feature for all 6 valves and user can easily adjust or tweak bias level with flat bladed bias tool provided by ARC.  

"I wonder how a PL preamp would go with an ARC VS115 amp?"

Pretty much any preamp or amp is universally compatible with other brands. Having said that, I am a big proponent for components synergy. When I was building my system, I tried couple of pre's with VT-80 amp and nothing came close to LS28. This combo allowed me to hear better imaging and bigger / wider soundstage.  

If possible, I would suggest you find a way to hear both PL and ARC pre in your system and decide for yourself.  

Should you choose to go with ARC pre, you can pretty much cherry pick LS17SE, LS27 or LS28 off Audiogon.