I know many people really question the use of tube buffers. I can understand that train of thought for sure. I have English amps so I buy into the simply is more concept.
That being said I used my ears with the Scout system. I compared it with and without the itube buffer but in the end kept it in the chain. I have not yet taken it out of the prime chain but will do so and provide feedback when I get some time. (note itube was in both systems)
The professional reviews of the ifi Micro itube are dead on in my system. It really does not change the tonal balance. It does not add a huge amount of bloom. It does not sound "tubby". What it does is add very slight richness. It also creates a little bit bigger soundstage and adds a little more smoothness to the system. In summary affects are very subtle but positive IMO.
My friend with Ayre stuff had Parasound before and employed the itube. When he switched to the Ayre he removed it from between the pre and power amp. The Ayre didn't like it, plus he wanted to run balance as Ayres sounds best this way (no balanced on itube). It may be that the Ayre stuff is just to resolving to have the itube add something and not diminish performance. The reviews do mention that at a certain level of components the itube might impede performance. They threw out a price range but I can't remember. The Ayre probably crosses that thresh hold.
That being said I used my ears with the Scout system. I compared it with and without the itube buffer but in the end kept it in the chain. I have not yet taken it out of the prime chain but will do so and provide feedback when I get some time. (note itube was in both systems)
The professional reviews of the ifi Micro itube are dead on in my system. It really does not change the tonal balance. It does not add a huge amount of bloom. It does not sound "tubby". What it does is add very slight richness. It also creates a little bit bigger soundstage and adds a little more smoothness to the system. In summary affects are very subtle but positive IMO.
My friend with Ayre stuff had Parasound before and employed the itube. When he switched to the Ayre he removed it from between the pre and power amp. The Ayre didn't like it, plus he wanted to run balance as Ayres sounds best this way (no balanced on itube). It may be that the Ayre stuff is just to resolving to have the itube add something and not diminish performance. The reviews do mention that at a certain level of components the itube might impede performance. They threw out a price range but I can't remember. The Ayre probably crosses that thresh hold.