John Willett
Veteran
No difference in the HDX compander circuitry or anything else then?
Correct - you can mix them up perfectly - eg: using a 100 transmitter and a 500 receiver, for example.
Don't know - there are hardly anly Lectros in the UK.Also, how does the Sennheiser compander compare to, say, the Lectro 400?
Easier to gauge are big differences like the Lectro 400 series being a 100mW unit compared to the Senn's 500's 30mW.
100mW are illegal most places as ISO spec. says maximum 50mW erp for pocket transmitters. In fact a slightly lower output is better for multi-channel use.