PA 1090 is a multizone amplifier which integrates a large number of channels that can be operated as much low impedance channels as 70/100V line. Its 10 channels are distributed in the following way: 8 channels @ 4 ohm + 2 channels 70/100V line. This versatility allows an amplified system centralized in an unique device with different loudspeakers configuration. The low impedance channels can operate in bridge mode, making much more bigger the PA 1904 possibilities.
The audio inputs are another example of this amplifier versatility. It disposes of 2 LINE inputs for all channles and 5 individual LINE inputs in order to connect several audio sources and to separate channels according to installations requirements.
PA 1090 has protections against overheat (adding a fan with different speed according to the temperature), overload, and DC levels in outputs.