[ADTech]

FWIW, the 3410, 3412, 3414, and 3418 all use the same 15 dB amplifier module internally. The difference in gain, output relative to input, (15, 11.5, 8, 4.5) is the integrated splitter.

If you have sufficient signal power to start with, you can still further split the outputs of any of these distribution amps - right up to the point where you finally run out of power. The main concern with doing this is the slightly greater possibility of mechanical failure of the connectors plus a small extra insertion loss penalty.