sound keeps changin when sample is triggered

so i recorded a drumloop into my mpc1000 with jjos 4.99 i have it on an 8 bar loop and the sample is 2 bars, i put it on mono so it loops perfectly

the first 2 times its triggered it sounds normally but the third time it seems like the eq or frequencies or volume are being slightly adjusted, if anyone knows whats up please let me know., thanks

it goes so far as if i press the repeat button at 1/8 the first bass hit sounds over and over as usual, and it sounds different everyonce and a while for no reason

thanks before hand

the only think i can think of is maybe u have the pad assigned to a qlink slider or have an effect flanger set to that pad

Are you sure it is set to monophonic?