Don't sleep on LONG mode

[HxC]

SP-606

Hit MENU

Hit SYSTEM

Change "Sampling Grade" to LONG

Sample your drum hits into the 606 (preferably SPDIF in), and you will find (especially on snares) that you get that nice style (mpc60ish) ruffness.

Just don't forget to switch it back when you want your samples to sound pretty-boy.
The LONG vs. STANDARD option is very cool, and not to be slept on.