A complete speaker set, manufactured in Korea (INTER-M company). Used in (mosques, schools, beaches, public facilities, malls, markets, and many more). # A COMPLETE SET IS AVAILABLE CONSISTING OF: 1 amplifier (120 watts). 2 outdoor speakers (30 watts / 20 watts). 2 indoor speakers (30 watts). 2 wired microphones. ** Amplifier Specifications: Model Name: INTER-M PA-4000a Power Output: 120 watts. 5 microphone inputs. LED screen for output level. 5 switches to turn on all speakers or a portion of them. LED indicator for input signal for each channel. ** Outdoor Speaker Specifications: First Model: Inter-m HS-30, 30 watts output. Second Model: Inter-m HS-20, 20 watts output. The speakers provide high sound pressure and precise sound control. They are not easily bent or broken because they are made of very strong materials. Environmentally resistant for outdoor use, unaffected by water and dust. Can be moved 240 degrees up and down and 160 degrees left and right. Designed to be mounted on the wall very easily. ** Indoor Speaker Specifications: Clear horn speaker: 30 watts Model: Inter-m CH522 Coaxial two-way system. Wide frequency range with noticeable sound clarity. Excellent for public address systems. Easy installation.