Yes, the 322 is dual tuner. I use mine for two SD televisions on opposite sides of the house. The only real limitation I have found is I don't think it will allow stereo sound on TV2. It hooks up like the 622 using existing coax in the house. It has two separate tuners (one for each television). The only thing I would like added is a picture-in-picture capability if only using one TV at the time.