I would just like to tell everyone out there that the makers of all casette and CD players have been misleading everyone for years- the old 50 watts times four channels is a total lie. The fact is that all of the players come in at 12watts times 4 channels. It is a way of tricking consumers into thinking they need more. I do not want the 35x4, I want the 50x4, well as far as wattage they are all the same- If you do not believe me go to installer.com . Any way I would just say get the options that you need on the casette or cd and you will be fine. Anyways I just hate corporate america misleading everyone.