Yup, 4u roller x skb rack it's nice . I have the 2u M-Pulse 600 and need to fill the other 2 u's. I'm wanting a power conditioner not sure which one. I'm guessing furman and some kind of a 1u effects. What would you guys suggest for both? I sort of did a search didn't come up with much on the power conditioner so any advise you guys have would be great.