donpepe, you obviously have musically trained ears based on your ownership history and currently own a very respectable preamp. A matching Ayre amp(s) like an MX-R would be a no brainer and could definitely drive those speakers with no problem. Ayre doesn’t show the output impedance for your preamp but whatever other amplifier you select it would be good to make sure that the ratio between the amp input impedance and your Ayre preamp output impedance is greater than 20, as a general rule. Ayre amps pose no issues since their input impedance is astronomically high.