Abstract: An amplifier and a method for detecting the presence of a load (3) in a bridge-type amplifier configuration, in which the amplifier includes two amplifying circuits (1, 2). A load detection sequence is combined with an activation sequence of the amplifier by providing, during activation of the first amplifying circuit (1), a low impedance (4) at the output (203) of the second amplifying circuit (2), and determining whether a current flows through the low impedance (4) or one of the outputs (103, 203) of the amplifying circuits (1, 2) during the activation of the first amplifying circuit (1).

Abstract: A bridge amplifier circuit comprising two amplifiers in bridge configuration having a feedback path from the output of one of the amplifiers to the reference input of the other amplifier, together with compensation means for reducing the voltage variation at the reference input. In this way offset and distortion are reduced, although the gain of the amplifier circuit is not affected by the presence of the feedback path.