Willy -
XLRs are a type of connector with three pins in a round shell. They're typically used for carrying a balanced signal connection, though some manufacturers who have XLR connectors on their gear do not necessarily have balanced connections - they simply have a single ended connection wired to the XLR connector to make their single ended gear compatible with other pieces that have XLR connectors.
If the designed cut corners when designing the gear, the XLR connector will have double the output of a standard RCA connector. If properly designed, the unit will have the same output on RCA and XLR.
XLRs are a type of connector with three pins in a round shell. They're typically used for carrying a balanced signal connection, though some manufacturers who have XLR connectors on their gear do not necessarily have balanced connections - they simply have a single ended connection wired to the XLR connector to make their single ended gear compatible with other pieces that have XLR connectors.
If the designed cut corners when designing the gear, the XLR connector will have double the output of a standard RCA connector. If properly designed, the unit will have the same output on RCA and XLR.