Can you run outputs from dvd player to amp ?

I have a new sony 777 es mega dvd player, can I bypass a prepro hook it directly to my 5 channel amp , thanks
Only if you have a volume controls on the DVD Player or the amplifier to adjust level.
Only if it has a volume control built in. You could use a passive volume control (passive preamp). You would need one with two for your pre/pro pass through, and the other input would work for what you are trying to do.