Let me clarify what precisely this specific expression means. From this specification it seems like the amplifier would be able to function as a HIFI amplifier. It might seem the larger the frequency response the higher quality the amplifier. That, however, will not always be. A large frequency response does not necessarily mean the amplifier offers good audio quality. As an example an amplifier having a frequency response between 30 Hz and 15 kHz might sound much better than a different amplifier having a response between 10 Hz and 30 kHz. In addition, each maker, it appears, utilizes a different … Read more at Joni Sledge Online