It is to bad you could not listened to my DT1350s in it's balanced configuration. These are do so much more on the imaging side of things when balanced out of my SR-71B. This is my preferred listening configuration with these.
Since the above comment I have moved on from using the SR-71B to using my ALO Rx Mk3-b amp. This now is preferred over the SR-71B for my use. The SR-71B is much darker sounding than the Mk3.