Technically, you can daisy-chain a surge protector and a power conditioner, but this seems unnecessary given that most power conditioners already have surge protection. If you have too many devices, you can use this combination and connect your power conditioner to a surge protector, but use caution. Try not to exceed the maximum power available from your wall outlet. Ideally, your power conditioner and surge protector should be connected to two different wall outlets, and those two wall outlets should be on two separate lines (separate breakers).