New preamp, loss of low freq.?


Hooked up new preamp, and I lost what I think is some low freq slam. Reasoning behind this?
i have been rewarded with the best cleanest, accurate midrange/highs I have ever heard, but did lose some low frequencies.      Normal?  

Sanders preamplifier is the new addition. 

Should i I hook up my equalizer to  smooth out, and add some low freq. 

it it is recording dependent, I still feel I lost some bass when sanders is in the mix. 

Not complaining, this has completely opened up my energy rc-70's, I have never heard these sound so loud, so clear before.   It's I feel I lost a few octaves in the lower register. 

Better? Leave it, I can definitely get used to this sound, as before it was a small bit boomy, maybe I just need time to adjust, and to let the pre warm up for a couple weeks. 

thoughts, recommendations, tweaks? I suppose I could move the speakers a little closer to the wall, this may add a little more bass. 
arcticdeth
Roger says how it sounds after the first hour, is what one will get indefinitely.  
If the preamp is brand new I would give it some time to break in, about 150 hours, before you make any determination.
I did change speaker wire, I hooked up 16" cables with banana plugs with true 8 awg wire, short runs to speaker, this definitely helped with the damping factor.  I am using auqioquest quartz cables.  

I will ill be getting some groneberg Quattro ref rca's in a week or two. Maybe this will add the missing low freq a little bit.