This A/V output also allows the IS-TV040919 to be hooked up as part of a home entertainment system. The RF antenna input, which is here to hook up an antenna to this TV, has become all but irrelevant with the changeover to digital television channels. The V-chip allows you to block certain channels off based on their ratings category, which is especially helpful if you have children. The front headphone jack allows you to listen to the TV without bothering anyone else. The Insignia IS-TV040919 comes with a 90-day parts and labor warranty.