Well, this depends on the brand and the kind of equipment that you have at hand. Most of the newer ones are upgradable because a lot of additions keep coming up. This way, you don’t have to do away with your equipment and buy a new one. This can save you a lot of money in the long run. It is the best thing for a professional; however, for home use, this factor may not carry a lot of importance. So, depending on your requirement, you can keep this in mind during the buying phase itself. Hence, it depends a lot on the type of audio-visual equipment you have got.