According to Behringer at this link ; www.behringer.com/Categories/Behringer/Power-Amplifiers/Portable/NX4-6000/p/P0CHU#googtrans(en|en) , The amplifier delivers 4 x 1600 Watts into 2 Ohms, 2 x 3000 Watts into 4 Ohms. I have tested it with four 15" Mid Range Speakers each @ 1000 Watts and the performance was great.
how much have reliable? Can i trust extreme stress full condition? Like 2ohm load
According to Behringer at this link ; www.behringer.com/Categories/Behringer/Power-Amplifiers/Portable/NX4-6000/p/P0CHU#googtrans(en|en) , The amplifier delivers 4 x 1600 Watts into 2 Ohms, 2 x 3000 Watts into 4 Ohms.
I have tested it with four 15" Mid Range Speakers each @ 1000 Watts and the performance was great.