Samsung HW-B650 vs Samsung HW-B750D

The Samsung HW-B750D is slightly better for most people than the Samsung HW-B650, but they're very alike. The HW-750D is a 5.1 soundbar that houses two side-firing drivers at each end, which creates a bit bigger stereo soundstage. Both soundbars have low latency across HDMI and Optical connections, but the HW-750D is a little better in that regard, and its surrounds performance is more immersive. It otherwise shares most of the same features and limitations as the HW-B650, which can get a bit louder with a bit less compression. Still, at safe listening levels, you won't detect a difference. That said, the HW-B650 downmixes surround audio because it's a 3.1 bar. Still, you can use either bar's EQ to alter the sound to your tastes as well.