A cover for use with a remote control device comprising a front member which exhibits a continuous flat surface and a rear member having a curved surface. The at least one stabilisation network comprises an inductance operably coupled between the corresponding nodes of the first and at least one further amplifier blocks, and a capacitance operably coupling a mid-point of the inductance to a ground plane. The modulator integrates an analog input by using a plurality of integrators, weights them, quantizes them by using a plurality of quantizers in a digital domain to output digital signals, and then adds up the thusly outputted digital signals by using a digital adder.