Acoustic Research (new AR-1) any good ?

Hello,I am thinking of buying a pair of the new AR-1 speakers.How do they sound? Also I am using a pair of Sound Valves VTA-70 amps strapped to 70 watts mono.One more thing I have found that some speakers with high sensitivity seem to show up a lot of source noise or a hissing sound do these do this? On the new AR-1 speakers the tweeter looks like it is recessed about 1 inch what does this do to the sound? Does it help or smear the image? Thanks Bob