Ayre V3 owners. What preamp do you use?

Thanks All...What I'm wondering is if the early reviews that stated the V3 to be only a good amp as oppossed to outstanding amp when run single ended was before the upgrades that Ayre made. Many say you need to run this amp balanced to get the most out of it. I'm finding the M3A(which is single ended) and the Ayre to be a good match, one thing that concerned me was a possible impedence mis-match between the pre and amp. The input on the M3A is set at 47k olhms and the Ayre is at 10k olhms. Is this a large difference? From what I've been able to tell there is no frequency imbalance that I've noticed. I've heard that you could have an amplifers input changed. What difference would that make? Thanks-Gary

I've had the amp upgraded (owned an original), and it still sounds better balanced. If you want to use a single-ended preamp (I do with Bel Canto even though it has balanced out), get a good pair of RCA to balanced converters. That way you will get the best of both components (loss from converters is minimal is they are done right).

The impedence mis-match you need to pay attention to is the preamp's OUTPUT impedence and the Ayre's input impedence. The Ayre, at 10K ohms, is definitely on the low side.You want a preamp with an output impedence of 1K ohms or less, as I understand these things. Try a Placette.

Not sure about the Modulus' output impedance spec, but 47K sounds wrong. Perhaps you're reading the INPUT Z spec? Output impedance of most preamps is typically much less, usually around 600, 500, maybe even as low as 50 ohms. Output Z is typically an issue when using longer interconnect cables.
The Ayre upgrades were (1) a reduction of gain from 30 dB to 27dB (high-gain tube preamp owners had a problem with excess amp gain as their volume pots had to be operated nearly minimized) (2) addition of the Ayre conditioner - an inductive filtered power supply. Mine initialy had only the 1st upgrade; the Conditioner was a definite enhancement.

Drubin and Bob budus- You are right... That was my mistake the output impedence is what I should have been concerned with and it is as Druvin had mentioned only 1.2K ohms. I've also spoken with the people at Ayre (Who are really GREAT they bother to spend the time with you!) who did not feel it was a mis-match at all. They actually thought it was a great combination. They also mentioned that the difference with the upgraded amp running single ended and the balanced configuration is not as big a difference as people make it out to be. They just recently came out with a burn in CD that they said makes a bigger difference that balanced vs single ended. Once again thanks for all your help. Best-Gary