HIFONICS BXX4000.1D BRUTUS. 1x HIFONICS BXX4000.1D BRUTUS Manual. 1x HIFONICS BXX4000.1D BRUTUS. At very high listening levels, Hifonics amplifiers with Super D-Class circuitry result in lower distortion, higher current efficiencies and less heat than conventional D-Class amplifier designs.
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