Greetings, I'm assembling a rack. I have a wireless system going into a tuner, into a Sansamp RPM. I'm fairly satisfied with my sound as I don't require much in the way of effects, especially with this current project. I'm having trouble finding a suitable method of powering all 3 devices without having to buy a power conditioner. If I did, I would have to send back the 3 space rack and trade up for the 4 space! Pain in the neck. Do I really need a power conditioner, or should I try and cram a 3 prong extension cord in the rack case?? Any thoughts? Experience in either??? Thanks!