Sounds like ksa250 sound was just more to your liking in your system.
What is the rest of the system, particularly speakers?
Class A amps are generally less efficient and will always tend to draw more power, right, though some less when idle and such than others perhaps.
I opted for a very efficient set of good Class D monoblocks for my power hungry OHM F5s rather than large, power hungry Class A or even Class A/B amps and have been most happy with the sound. Best quality bass I have ever had, though when I first heard my system with these amps, the bass sounded exceptionally lean in comparison to prior. Now it is just all there, rock solid, powerful yet exceptionally articulate to the max as well! It was my own ears that had to adapt or break-into the new sound more so than anything else. It turned out to be just what I was looking for bass-wise though my first reaction was "where did all the bass go?".
What is the rest of the system, particularly speakers?
Class A amps are generally less efficient and will always tend to draw more power, right, though some less when idle and such than others perhaps.
I opted for a very efficient set of good Class D monoblocks for my power hungry OHM F5s rather than large, power hungry Class A or even Class A/B amps and have been most happy with the sound. Best quality bass I have ever had, though when I first heard my system with these amps, the bass sounded exceptionally lean in comparison to prior. Now it is just all there, rock solid, powerful yet exceptionally articulate to the max as well! It was my own ears that had to adapt or break-into the new sound more so than anything else. It turned out to be just what I was looking for bass-wise though my first reaction was "where did all the bass go?".