I agree with Larryi. I would say it all depends on several factors: your speakers, your room and the type of music you listen to. Others will say cables also play a role.
Given that your speakers have a built in ICE amp to handle bass, I would lean toward solid state or Class-D. The reason being is that you will have a mismatch in speed and dynamics between your bass/mid-bass and mid-range/highs.
Unless I'm mistaken, the crossover point on your speakers is 35hz. That's fairly good in that it shouldn't interfere with the mid-bass.
So, I would suspect, what you are hearing is a better pairing of amp/preamp for your entire speaker. Built in Class-D amps to handle bass can be a good thing....but they can also cause some challenges too (as you are finding out).
FWIW - I would look at the Classe CA-2300 (or CAM600's) and CP800 as a possible pairing. The Classe amps are wickedly fast and may mate very well with your Class-D inside your speakers.
Given that your speakers have a built in ICE amp to handle bass, I would lean toward solid state or Class-D. The reason being is that you will have a mismatch in speed and dynamics between your bass/mid-bass and mid-range/highs.
Unless I'm mistaken, the crossover point on your speakers is 35hz. That's fairly good in that it shouldn't interfere with the mid-bass.
So, I would suspect, what you are hearing is a better pairing of amp/preamp for your entire speaker. Built in Class-D amps to handle bass can be a good thing....but they can also cause some challenges too (as you are finding out).
FWIW - I would look at the Classe CA-2300 (or CAM600's) and CP800 as a possible pairing. The Classe amps are wickedly fast and may mate very well with your Class-D inside your speakers.