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Best Tube Amp/Preamp combination with Quad 2805s

Recently upgraded my Thiel 1.6 paired with Krell KAV-400xi integrated amp for a pair of Quad 2805s. Told that the Krell pairing probably won't bring out the best in the Quads. Looking at PrimaLuna Dialogue 3 preamp and Dialogue 7 mono amps. Also advised to look at an Audio Research combination of pre-owned LS17 preamp with pre-owned VS115 amp.
The price combination for the PrimaLuna and pre-owned Audio Research actually comes out pretty comparable. I love jazz, jazz vocals, and classical music. I really want to find a combination in the $6k-$10k range that gives me the closest approach to that "live" performance. I love a big, natural soundstage, front to back and side to side. I just don't want something too analytical with the Quads that becomes fatiguing to listen to.
Any thoughts out there between the PrimaLuna versus Audio Research sound? Any other classic pairings to look at for my price range?
vitman2020
atmasphere's avatar
atmasphere
7,068 posts
 
Well, *I* prefer our amps, so you will have to take my preference with a grain of salt.
joe_appierto
81 posts
 
I know that Quads have a reputation for getting along well with lower powered amps but if your 2805s are anything like my 989s, you might want to consider a little more power than 35 or 40 watts. This is just my 2¢ naturally but I've used both a c-j Premier 11A and a Premier 140, and as good as the 70 wpc 11A sounds with the 989s, the 140wpc of the Premier 140 takes the sound to an entirely new level in terms of clarity and dynamics. The sound stage, which was excellent with the 11A, solidifies, is better layered and expands with the higher powered amp.

As I said, just my 2¢.

Good luck with whatever you decide upon, the 2805s are supposed to be one sweet set of speakers.
mikeyaya
32 posts
 
I have the VAC sigma with a pair of Quad 57's. It is probably more power then I need but it sounds fantastic. It is a great amp and very musical. With the 2805's it would sound great.
philipwu
204 posts
 
hi Ralph,
base on your Paradigm theory, is ALL solid state amp belong to Voltage Paradigm? what about those amp which cannot double its power when impedence half?
regards.
atmasphere's avatar
atmasphere
7,068 posts
 
Philipwu, now you see why the conflicts of these two paradigms has spawned the tube/transistors debate; yes, nearly all transistors are on the Voltage Paradigm, but not all- the Pass First Watt amps would be an example.

The Quad has a pretty variable impedance curve- which causes a lot of transistor amps to be bright in the highs and not play a lot of bass. If you investigate, you will find that most people that get bass out of Quads and transistors usually have the speakers only a couple of feet from the wall. This gets them some bass reinforcement, but only at one frequency.
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