Contour 30s with Simaudio 600i

Looking for advice. I have Dynaudio Contour 30s. I've downsized my system and I'm interested in using a Simaudio 600i. My concern is whether the 600i will have adequate power. I'm 58 and don't listen loud much anymore, but occasionally I like to turn it up a bit. Music is primarily female vocals, jazz, alt country and classic rock such as CSN, Eagles and Dire Straits and a lot of stuff in between. Nothing hard. I've considered a 700i or a Pass INT-250, but I don't really want to stretch the budget that far. Contour 30s are rated at 4 ohm 87db. I've used a Pass X150.8 in the past and it was perfect. The 600i doesn't have a lot less output power so it seems it should be adequate. As retirement is near, I'm ready to get off the constant equipment shuffle I've gone through over the past 20+ years and stick with a good system. Any advice is appreciated.