What the influence of the cable was can easliy get tried out. Just put your usual guitar cable between the guitar and the transmitter, so you can hear your real cable instead of an emulation of it.
Cable in place of the transmitter... yes, easy test...
just to explain what i mean...
http://wiki.fractalaudio.com/axefx2...r_cabinet#Use_a_neutral_solid-state_power_amp
the very last paragraph... "About speaker wire"