With respect to the Jeff Rowland integrated amps, there are three to consider: the Concentra I (which I own), the Concentra II and the newest (current) Concerto.
i can't give you a useful opinion about their sonic differences, as I've not heard the other two in my system. What I know for sure is that the earliest of the threethe one which I ownis damn good. Also, all three are built exceptionally wellI've never seen a better built audio component, period.
The Concerto is smaller and runs much cooler (B&O ICE power) than the other two, but I don't think the Concentras run too warm to cause any kind of problem. The other important, identifiable difference is, of course, that you can get one of the Concentras for $3,000.00 or less, while the Concerto will cost around $4,500 used.
i can't give you a useful opinion about their sonic differences, as I've not heard the other two in my system. What I know for sure is that the earliest of the threethe one which I ownis damn good. Also, all three are built exceptionally wellI've never seen a better built audio component, period.
The Concerto is smaller and runs much cooler (B&O ICE power) than the other two, but I don't think the Concentras run too warm to cause any kind of problem. The other important, identifiable difference is, of course, that you can get one of the Concentras for $3,000.00 or less, while the Concerto will cost around $4,500 used.