The term 'Amplifier Setting' can refer to a variety of different settings used to increase the volume or power of an audio signal. The crossword solutions for this term include 'TREBLE' (6 letters), 'Mike' (4 letters), 'MEGAPHONE' (9 letters), 'REPEATER' (8 letters), 'Maser' (5 letters), and 'Mic' (3 letters). TREBLE is a setting on an amplifier that increases the high frequencies, while Mike is a shortened form of microphone, which is a device used to capture sound. MEGAPHONE is a device used to amplify sound, REPEATER is a device used to boost a signal, Maser is an acronym for Microwave Amplification by Stimulated Emission of Radiation, and Mic is a shortened form of microphone.