I cannot address the merits of the Primaluna, but I love my M-180s.
They drove my formerly owned, difficult to drive Totem Mani-2s with ease which is no small feat for tubed amps. I am now running Harbeth 30.1s, and the combination has me right where I want to be.
Hard to say how they will drive the top end of your JBLs, and there are so many other factors in a system which can/will alter performance. Like most of us, you'll have to pay to play to find out.
Buy them used and if they don't work out for you, sell them at close to a break even price and move on.
Jerry
They drove my formerly owned, difficult to drive Totem Mani-2s with ease which is no small feat for tubed amps. I am now running Harbeth 30.1s, and the combination has me right where I want to be.
Hard to say how they will drive the top end of your JBLs, and there are so many other factors in a system which can/will alter performance. Like most of us, you'll have to pay to play to find out.
Buy them used and if they don't work out for you, sell them at close to a break even price and move on.
Jerry