DR series is professional digital power amplifier. The amplifier part is digital. At the same time, its power supply part USES high-power toroidal transformer. In this way, the amplifier has stronger overload capacity and larger capacity capacitance. Also, it can store more energy. Therefore, the driving current is particularly large. It works better at driving low-frequency dynamics of high power, and it’s especially suitable for driving large caliber professional speakers.
This series can have a different effect when comparing with other amplifiers in driving large diameter speaker.