The Air-track series is a sound bar speaker that was made in consideration of achieving the greatest degree of balance within a slim TV. We became the industry’s first to apply a vacuum tube amplifier (F750 / F751) to a sound bar to deliver rich, smooth sound. Seamless metal was applied to the straight, modern form, which reminds on modern buildings, resulting in understated beauty. Placed together with a premium slim TV, this speaker creates the most ideal space for entertainment. This consists of two types: the HW-F751 / F750, which has a vacuum tube, and the HW-F551 / F550, which features a design of more simplicity.