I'm running a Line 6 Relay G70. The reasons I chose that model is because of the very low latency (claimed 1.5 ms) and the metal belt pack.
Never had any issues with it.
It also has a useful scan feature, DI output, two quarter inch outputs at once (configurable) and a tuner/mute.
Drop-outs are only occurring when moving out of range: it has a pedal format receiver, there are no external antennas and it is mostly on the floor, which is not the most ideal placement for the highest possible range.
I am very sensitive to latency.
What I found out is that at first I really got the impression that the latency is a lot larger when going wireless... at least observable.
However, I later found out this is just the physics involved: when going cabled, I never go more than 6 meters so I'm fairly tethered. I am finding myself often going a lot further away out front at sound check etc., which - for me, at first - seemingly increases the latency as you are near the limits of the wireless range.
I'm always using FM3 going direct to PA, so you're quickly going 10+ meters away from the PA speakers.
This translates to about 29ms of latency, just from the time the sound waves need traveling this distance to your ear.
You will notice the latency introduced by the wireless is just a fraction of that...
Of course it all adds up (wireless - FM3 - digital mixer processing - PA processing), but the wireless alone doesn't have that much of an impact compared to just plain physical distance.
I'm using in-ears with an UHF transmitter for monitoring since I realized this
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