Remember when COMBO home entertainment systems were popular? If it needed to go to a shop, half of your living room disappeared as the service truck hauled it away to the shop for repair.
By modualizing individual systems a controller for instance can be upgraded without trashing the system. The finest musical reproduction equipment on earth use modular construction
Reproduction -- ie tuner, turntable, cd rom, etc. --- pre amplifier --- equalizer --- amplifier --- speaker crossover network --- speaker. And to make it tough the pre amplifier and finals use vacuum tubes.
All in one receivers satisfy many people.
I would recommend selection, that is cherry picking individual components that do their job according to your exact needs.
Solar is in a unique position to offer finish-charging expertise due to more complete control and because solar can finish up an utterly correct battery charge minus a generator's negative points.
