Thanks but that's not exactly what I wanted. After stopping to think more carefully again (and with some help, why not say it ) I have achieved: Kemper send out - OD808 in OD808 out - Kemper return First stomp - loop mono Et voilá!!! The trouble now is, once I increase the tone more than 25% at the end of the palm mutes, I hear something like a reverb or a subtle hiss but it is very annoying. Only happens with the physical OD808, if I put the Green Screamer Kemper doesn´t. Anyone else happen?