Old NAD or newer high powered Denon?


I am currently running a NAD 3020 in my main system. I love the amp. When paired with my Sequerra MET7's it sounds great. I also have a pair of Vandersteen 1C's and I am thinking that the NAD's don't have enough power to drive them. I am getting relatively poor sound quality out of the 1C's with the NAD. It closed in and not very dynamic (when compared to the MET7's). I have heard the 1B's in the past and they sounded amazing which is why I initially purchased them.

So my question is: would I gain anything in terms of sound quality of I purchase a higher powered more recent model Denon or am I just hearing the differences between the MET7 and the 1C's?
hifibear
I would look for a higher powered NAD integrated....I have tried the high end Denons and Onkyos.....very thin/clean sound...preamp section doesn't touch robust NAD sound. Oh just a thought..if the 3020 has the preamp out jacks.....do what ever it takes to get a Hafler power amp..later models...with jfet driver stage...like XL280. Problem solved.
Absolutley!! If at all possible go for the SE240 120 watts per channel. This is a scaled down version of the XL280. Fewer mosfets in output stage (4 per channel) and simpler/small driver boards, but it has the same JFet input circuit. I have listened to hundreds of transitor and tube amps over the years and I can not think of a better amp for the dollar.....typical Hafler. And for some fun try to find an old Dynaco ST70 at a garage sale and have some fun compairing.... Larry
Larry, great minds think alike -- ST-70.

Hifibear, your objection to tubes isn't clear, "imagine missing tubes". You suspect your kids might steal them? Many Dyna ST-70s can be found with original cage which is screwed on to the chassis. If the little buggers are that persistent, nothing is likely to stop them from messing up something.

Nothing against the SE240, I never heard one. I just know that near magic can be found with a decent tube amp and Vandy speakers.
Pryso and Hifibear, sorry getting long winded. FYI the last versions of the Hafler amps with Jfet driver/Mosfet output play (not sound) my hard to drive speakers like a tube amp. When the absolute sound reviewed the XL280 the reviewer loved it but as usual HP POO POOed it. I loved David Hafler's response..talk about speaking from authority about designs. He said his amp would compete with any $2000+ amp and I agree. The only transistor amp that I have heard that compares is the BAT amps...few more dollars. The Haflers do very in "whiteish" sound in the midrange that HP heard..but let them break in and warm up it goes away. One Tech told me that the class A point varied in the Haflers. If they run hot...good sound.