CHOPPING WHILE SEQUENCE PLAYS

PEACE, I WANT TO KNOW IF THE 4000 ALLOWS YOU TO CHOP WHILE THE SEQUENCE IS PLAYING AS DOES THE 2500 ? AND IF SOME ONE KNOWS THE MP 2500 AS WELL AS THE 4000 LET ME KNOW YOUR OPINIONS ON BOTH AS FAR AS THINGS ONE CAN DO THAT THE OTHER CAN'T AND SUCH.

THANKS YA'LL.
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