I'm not sure about the samson 1000 and art 351 (not even sure what they are -- the model numbers aren't familiar to me), but the 770 will have a trigger input. A little cord with 1/8" plugs (the small headphone plugs) on each end can connect the two so that the 770 will turn on when the 950 comes on.

If you are trying to turn on multiple devices when the 950 comes on (rather than just turning on the 770), you might look at a couple options: a macro on your remote that turns everything on (you'd still need to connect the 770 as described above, since it can't receiver a power on signal from a remote), or a power conditioner/surge protector with a trigger similar to the 770's that will switch some of its outlets.

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Gonk