To get a huge sound - some use a lot of delay or reverb - that may work in some cases - but sounds to much processed in a lot of others.
I found that the KPA 'Stereo Widener' (I use it in the X slot) makes some sounds VERY HUGE
I like the KPA with this effect more than the AxeFx with two amps/caps at the same time
If the default settings does not work for you - the effect has some parameters to play with ...