I am using several pedals in my signal chain. I am experiencing a bit of latency between the moment I sing in the microphone and I hear myself in the monitors, is that normal?
The latency is cumulative, just like in all the products, and depends on how many effects you are running. Depending on the pedal, there is about 1 to 5ms of latency (AD/DA + the effect processing), the largest being in the H1.
There's nothing to do to avoid it, other than to get used to singing "around" it. The audience will never notice any latency, since they're only hearing the output. They still get the full benefit of the sounds, but the singer definitely has to compensate a bit.