The HK Audio E 110 Sub AS is remarkably compact and light, yet its two onboard 600-watt power amps deliver twice the performance of the E 110 Sub A. And that makes this subwoofer the perfect choice if you wish to flexibly extend an ELEMENTS PA system. With the E 110 Sub AS you can run an additional E 110 Sub and up to two E 835 mid/high units for a total of 16 broadband speakers.