Shahbaz Bhai ... of course one Hertz pair is required, but some other tweaking is also required.
First and the foremost is some kind of cooling system. The three mighty amps generate lot of heat and we need to get that heat away from the amps as soon as possible. During this season we are expecting 45 degree plus temperatures ... so proper heat disposal is required.
The amps require remote cable to get the signal to turn on. In this case, we checked and we saw some voltage drop. In order to compensate for this voltage drop, we need to install a relay to ensure 12V remote signal is delivered to the amps.