Add EF1 to one of the notes. It is a pitch shift up, but F1 is fine. It should make it sound like a chorus effect applied to it. But don't go overboard or it will sound out of tune.
I don't know what kind of sample it is, but I suspect it is a drum sequence. If so, consider replacing one of the notes with a completely different sample.
Also, remember you can use the Oxx to set an offset. You could set the offset for the entire duration from when the sample starts all the way to that last row before the next note starts, and have notes played at every row. If done correctly, the section with offsets won't make any difference. Now transpse the keys of all notes by an octave and voila, impact!
Hmm, looking at the screenshot, they're not drumsamples. I think in your case, I would transpse the right F#2's 3 semi notes up.