Try Boulder amp's and you will be in heaven. Avalon speakers don't work all that well with tube amps because the Ceramic midrange need a very high dampening factor to control it. I know the Lamm 2.1 is not a tube amp but it doesn't have the power to control the Isis. I find the Boulder to be a match made in heaven with Avalon.
IT's not the woofer that is not giving you the output but the crossover controlling it. You would not have the midrange you have if they let that woofer fly free.
IT's not the woofer that is not giving you the output but the crossover controlling it. You would not have the midrange you have if they let that woofer fly free.