Hi jafant, well still searching as you can see, i spoke with a distributor that told me Dartzeel and Ypsilon will not have enough juice in the bass region do drive my 3.7s.He suggested me strong class A amps or SOTA class AB doubling down to 2 ohms.So here am i looking at the Ayre pre-power.Were you able to demo some amps for you 2.4SE's lately ?