  We present Bell tests for optical continuous variable systems, combining both
hybrid measurements (i.e. measuring both particle and wave aspects of light)
and heralded amplifiers. We discuss two types of schemes, in which the
amplifier is located either at the source, or at the parties' laboratories. The
inclusion of amplifiers helps to reduce the detrimental effect of losses in the
setup. In particular, we show that the requirements in terms of detection
efficiency and transmission losses are significantly reduced, approaching the
experimentally accessible regime.
