Viking 30 Watt Telecom Paging Amp with Loud Ringer Drive up to 30 8 ohm speakers 70V output can drive up to 50 70V speakers Master volume control Separate volume controls for Auxiliary input, paging, ringing tones, and background music Choose from up to 4 ringing sounds Electronic warble traditional loud ringer , Double gong two identical “gong” tones , Quadruple chime four descending chime tones , Door chime ding dong Provides loud ringing or night bell Night transfer switch Page from an unused trunk port or paging port Can provide background music from an external source Use as a low cost stand alone power amplifier 600 Ohm output to drive additional amplifiers Use multiple units for more paging power