The Plena mixer amplifier is a versatile, high-performance unit with four mono microphone inputs and a music input. It fulfills a wide variety of public address requirements at a surprisingly low cost. Features : * 60 Watt output power * Four low-noise balanced inputs for microphone or line * Selectable priority & VOX switching on microphone input 1 * Optional 2-tone chime to precede announcements Controls and indicators Front • LED power meter • Power on LED • Master volume control knob • Four volume control knobs for mic inputs • Three knobs for BGM volume, treble, and bass levels • BGM source selection knob • On/ off switch Back • EMG input volume control • Two mic/ line switches • Chime on/ off switch • Mains voltage switch Interconnections Front • Headphone jack Back • Priority mic input ( DIN/ 6.3 mm jack) • Mic input ( XLR/ 6.3 mm jack) • Two mic/ line inputs ( XLR/ 6.3 mm jack) • Three audio inputs ( 2 x cinch) • EMG input ( screw) • Line output ( XLR) • Tape output ( 2 x cinch) • Insertion input/ output ( 2 x cinch) • 24 VDC input • Three ( five for the LBB 1914/ 10) loudspeaker outputs ( screw)