Hi John, your point is well taken. I wish I had considered that option at the time I posted, but I was in a hurry and just plain didn't think of it. At the time I thought it would be better to be up front that I was selling one. However, after reading your post, I looked up the moderation guidelines for this site and you are correct, posts that may be declined include, "Posts that are obviously trying to sell something." Even though my ad is already paid and posted here, I should have e-mailed Hodu separately about having the preamp for sale.
To Hodu; I believe my positive comments about the K-5xe are directly relevant since Steve McCormack uses the Jensen transformers in my DNA 500 as well as in the balanced monoblock conversion upgrade to the DNA 0.5 that you have. I have previously posted my positive impression of the K-5xe in these discussion forums, where I stated "I am listening to the K-5xe now, and it is very nice in every way, with no flaws or shortcomings, but just not quite the last degree of richness, clarity and dynamics that the A-S provides. If I had never heard the A-S, I would probably be perfectly happy with the K-5xe." There is quite a bit of additional information regarding the Ayre preamp posted here and at Audio Asylum. You might also look up Sam Tellig's review in the May 2006 Stereophile, and Jason Kennedy's review in HiFi+, which is posted on the Ayre website. There are many different opinions regarding preamps here, so listening for yourself may be the best and only way of knowing for sure what is right in your system. Good luck. - Tim Mitchell