C1800 has a capacity of two channels of 1250 watts each into a 70 Volt load
Professional DSP amplifier for live and mobile application
Fully integrated professional speaker processing with FIR drive...
C1300 has a capacity of one channel of 625 watts into a 70 Volt load
It does both 8 ohm and 70v: 2 channels of 8 ohm OR 1 channel of 70v, it will not do 8 ohm and 70v at the same time.
Professional...