The Reserve R350 is a low-profile center channel speaker built for home theater dialogue. It pairs a 1-inch Pinnacle Ring Radiator tweeter with four 4-inch Turbine Cone woofers in a sealed enclosure. The Turbine cone shape is intended to stiffen the cone without adding mass, and the tweeter's pointed shape is meant to widen the listening area.

The cabinet can be laid flat as a center speaker or stood on its end to work as a left or right channel, so up to three units can form the front stage. It has keyhole slots and 4-way wall mounts for horizontal or vertical wall mounting, and rubber pads for shelf placement. It is Hi-Res Audio certified and compatible with Dolby Atmos, DTS:X and IMAX Enhanced content.

Connection is through a single pair of nickel-plated 5-way binding posts. It is a passive speaker that needs an external amplifier or AV receiver, with recommended amplifier power of 25 to 200 W and compatibility with 8, 6 and 4 ohm outputs. It comes in black, white and brown/walnut finishes.