Do my Dynaudio Evidence Temptations require more amp?

I’m not planning any changes. The JC1s are a different beast than the integrated though. 

If by "more amp" you mean more power or an amp that is more capable of handling the particular load your speakers present, my answer is probably not.  I am not familiar with your particular Dynaudio speaker, but, it would be ridiculous for a speaker to demand more power than the Mac delivers, and any speaker that is too difficult a load that that kind of amp would be a horribly defective product.

Now whether or not the Mac sounds good enough with your particular speaker, or any other given speaker, is a different issue.  I only heard the 452 with one particular speaker, which is a high efficiency/easyload speaker, and I personally did not like the sound--it sounded lifeless and un-engaging.  That is my general impression with most high-powered solid state amps, but, I thought it was particularly the case with the 452 with this speaker. 

bubba12....i recommend a plinius amp for that speakers.   From my experiences with most dynaudio drivers they are current hungry ( the more damping factors the better).   Mac imho doesn’t have the current factors to drive dynaudio drivers.  Happy Listening! 

The McIntosh definitely sounds good. I just wondered aloud if maybe I would upgrade at some point. I’ll probably stay right where I am right now.

What they need is a very good DHT preamp to open up the soundstage and give them some  life and vibrancy and musical involvement.Something like a Supratek Cabernet 300B which I have heard transform similarly introverted speakers into something really engrossing.