If you amp does have Zobel networks - which is very probable! - then the less cable the better... and the smaller the effect that the cable will have.
Now looking at the transistor complement of that amp (and those power resistors), it probably has a nice high damping factor. Going back to the first study, the frequency response of their test system when using such an amplifier was not significantly affected by the cable used in the test.
However if you were to use a high-capacitance cable (litz or similar) it might affect the performance of the amplifier as described in Nelson Pass' study.