I'm not familiar with your preamp, but like the others stated above, it very well could be your source. I have a DNA-2 LAE and I've not experienced the negative attributes you mention.
There is a chance that if the amp and/or preamp AC lines/outlets are shared with say your digital source, coffee blender, microwave, furnace, light dimmers, etc., there could be sufficient noise in the AC lines to possibly approach one or more of the attributes you mention. It's amazing how much more articulate your system can sound when each component is given it's own dedicated line, some kind of power conditioning, etc.. Even disconnecting the ground can lower the noise floor significantly.
Of course, if it's in your budget, a few days ago I saw a McCormack DNA-2 deluxe Rev A for sale in audiogon for $4200.
-IMO
There is a chance that if the amp and/or preamp AC lines/outlets are shared with say your digital source, coffee blender, microwave, furnace, light dimmers, etc., there could be sufficient noise in the AC lines to possibly approach one or more of the attributes you mention. It's amazing how much more articulate your system can sound when each component is given it's own dedicated line, some kind of power conditioning, etc.. Even disconnecting the ground can lower the noise floor significantly.
Of course, if it's in your budget, a few days ago I saw a McCormack DNA-2 deluxe Rev A for sale in audiogon for $4200.
-IMO