Take the free "R6x9 Kick." Take a stock 808 from FL Studio or Logic. EQ out the sub-bass (below 50hz) from the R6x9 kick. Layer it on top of the stock 808. You now have a hybrid sound that no one else has.

: Occasionally used in design circles to refer to a variation of the 16:9 aspect ratio, though this is less common than its use as a file-sharing "code." Guide to Accessing "r6x9 Free" Content

Would you like a for this mode, or are you thinking of “R6X9” as a different reference (like a resolution, map code, or meme)? Let me know and I can refine the feature accordingly.