The Beowulf monaural amplifier is a milestone in amplifier design. The combination of bi-polar and MOSFET power devices in one enclosure is a first and creates great advantages in music reproduction and control of bi-wired or bi-amplified speaker systems. Basically, the Beowulf is two power amplifiers in one enclosure. One amplifier section, based on bipolar power devices, is optimized to handle low frequency information, while the other amplifier section, based on MOSFET power devices, is optimized to handle high frequency information. All vital signal components are hand selected and matched.