Did you compare the SABDDI-LB vs the "non-LB" version?
I didn't know this one existed, so I had to look it up:
Does it sound different, or is it just marketing?
The BDDI-LB's HPF cutoff sits ~30 Hz, opposed to the standard BDDI v1's ~70 Hz cutoff frequency. In my experience, depending on playback system, the difference is felt more than heard.