Dear all, my question is what cables I need to connect from my PreSonus HP4 to a pair of Akai RPM3 speakers.   This is my set up. Duet 2 output with two TRS cables to Presonus HP4's input. PreSonus HP4 also has a pair of outputs to speakers besides just headphones. I bought a pair of Akai...

Actually I meant to thank Yoga Flame for the detailed explanation. But thank you too tupac0306 for asking the question I wanted to ask. :-)

Thank you so much tupac0306. I also have a duet 2. I am thinking to hook it up with PreSonus HP4 and wasn't sure if I needed TSR speaker cable or TS cables. I thought all TSR cable are stereo, but I did read some poeple say that TSR can be used as mono for balanced ports, is this true?