Denon SLDC Technology
I have the DRA-395 and it is great. From what I can discern, Signal Level Divided Construction works somewhat similar to a 3-way spkr compared to a 2-way.
MO is that the 395 is better than the newer 397. On the latter the B & T can only be accessed by first going to a menu-- direct access on the 395. I haven't checked for a while but less than $100 will prob buy one.