An amplifier is expected to distinguish all components of music with equal power and naturalness, to respond to every tone pitch and sound volume in a neutral and authentic fashion. In optimizing our amplifiers we do not confine ourselves to a small test signal or a single level or frequency range. Our tests encompass the entire range of musical performance, every contingency, every instrument and every voice. As a result, our LASA Mono Power amplifier boasts the same extremely low distortion factor throughout the whole audible frequency range and the whole range of performance. The music communicates without indication of its electronic or mechanical means of reproduction.