The tuner is the key element of the set-top box that allows you to receive TV signals and convert them into picture and sound on your TV screen. There are several different types of tuner, including DVB-T2 (H.265/HEVC), DVB-T, DVB-S2, DVB-S, DVB-C and dual tuner. Each of these tuners is designed to receive specific types of TV signals such as terrestrial broadcast, satellite broadcast or cable TV. The dual tuner allows simultaneous reception of two different TV channels or recording one channel and watching another. With different types of tuners, you can tailor the set-top box to your TV viewing needs and preferences.