You don't need bandstacked lnb's for a 1 receiver setup, it will work fine as a 3 input disecq switch with gain.
That being said, it is a power hog, your receiver will run hot.
If you power it (on port 1) with a dc supply (18Vdc) then you need bandstacked lnb's. Then you can run 3 receivers off of it. Tell your receiver to scan V only for each port.
With an ECODA 22 khz switch or a sw21 you can use two DP34's for 6 inputs, lnb's should be all bandstacked, and the switches powered.
I use them and EMP-Centauri switches in my array, DP34's are built like tanks and are dirt cheap (free). The EMP 8x1 is a cool switch for all those sats with only 1 or 2 channels, get 'em all on 1 receiver.