Should I consider the newer Audio Research pre & power amps, when I play records not CD's

I don’t own, but have always admired, Audio Research equipment. I have read many passionate reviews about the virtues of ARC, so I tend to believe them. Their vintage gear is pricey, but easier to liquidate when the upgrade bug hits. I see an ARC SP-11 here on Audiogon that has been sitting for some time now. The seller has feedback so that can’t be it. These used to sell the first day. Considering the price of the newer "Reference" series preamps, any idea why this hasn’t sold? Is it considered a gamble to buy used tube equipment, even ARC? I'm just curious and no, I’m not the seller!

" Considering the price of the newer "Reference" series preamps, any idea why this hasn’t sold? Is it considered a gamble to buy used tube equipment, even ARC?"

That preamp sounds so different from the Ref series, it might as well be a different brand. Also, its not balanced like most ARC gear, and vintage peramps aren't as desirable as vintage amps. (From a SQ POV, not as a collector)

 I have seen Ref 110 amps going for just over $3500 to a little over $4000. $5000. is high. Browse HiFishark.com. I have owned both a VT100 and VT100 mk3. as well as the Ref 110.  Both are OK amps but not exceptional. The Ref 110 is exceptional. It is also much easier to bias, has a tube hours meter and can run KT 120 tubes. KT 120 tubes will last much longer than 6550s in the Ref 110.  I have owned a lot of Audio Research equipment. If I were looking for an exceptional used ARC amp, my favorites are a Classic 60, a V70, basically a balanced Classic 60. And the Ref 110.  But biasing the Classic 60 / V70 is a pain. Also if you get something too old, you have to think about replacing caps and may need it gone through.


 I really love the LS 25 mk2. I have compared it head to head with an LS27. I was no impressed with the LS27 and thought it not worth the upgrade. It took a Ref 5se to convince me that I needed to upgrade. Both the Ref 2 mk2 and Ref 3 are also much better than the LS25 mk2. Keep in mind that mk2 is very important as they use 6H30 tubes. I really like the Ref preamps because they use tubes in the power supply. I think this makes a big difference.  

 You may also want to consider a Fosgate Signature phono stage A very nice sounding phono stage. All tube and highly configurable for both MM and MC. They go for around 1200 used but can sometimes be hard to find.

How reliable are ARC Pre-amps?

Thanks everyone for the help. I read a few hours a day to try to update myself. There are not any dealers close so I have to do the research. What about the VS 115 w/KT-120's and Ref 75 & 75SE compared to the Ref 110?