After more listening to the 400r I have a couple more comments, I've come to the conclusion that the bass issue must have been in the recording and possibly masked by lack of detail or control, I played some modern R&B like Vivian Green and the bass was very good, I could easily hear bass guitar from the kick drum and when synthetic low end bass was interjected the 400r controlled it very well while it played deep with no distortion and if any one has the first Paula Cole album that first track goes subterranian and the 400r gave it one of the best renderings I believe I've heard.
So next I had to get nasty and play some Blues, not only was the bass good on Joe Bonomassa's Blues Deluxe there was a blistering acoustic guitar track which played through the 400r the best I've ever heard, it's like I've heard it before but compared to the 400r the notes were blurred, through the 400r I was able to depict all the notes, and Joe smokes on this track. Then some SRV and even Bob Seger Live Bullet, I've determined the 400r sets the benchmark on "Boogie Factor". When listening to drums the treble response seems extremely good, cymbals, high hat etc. I also get a sense of vocals being more intelligible. Oh, and I also listened to some CSN&Y which was very good, I could here each individual voice in the harmonies, and the overall timing was more precise. I'm liking the 400r more and more as we spend time together.
I played some Barber, Vanessa Williams, Monk, Christian McBride, Vivaldi etc. but sometimes you have to boogie.