Anchor Liberty MPA4500 (4) MP-4501 (1) Portable Dual Function Speaker System – Lot of 5


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SKU: 1074818-WH2 | MPN: Mp-4501
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Liberty is really two sound systems in one. In “Music” mode, it provides rich, full-range music reproduction—the kind you can feel. Flip the switch, and Liberty’s tuned especially for speech projection, concentrating its power to make the voice segment of the sound spectrum carry farther.

The MPB-4500 is a 50-watt battery-powered sound system that runs 6 to 8 hours on a charge. It is designed for crowds up to 1,000 people with its 117dB of clear sound. Liberty is used at the White House for Presidential press conferences, at thousands of schools around the world, at corporate training centers and on every U.S. aircraft carrier. Liberty is rugged, reliable and crystal clear.


  • Project/Music Switch. “Project” emphasizes voice for better clarity, “Music” gives higher fidelity.
  • Switchable to either an efficient voice-projecting system or a full-range music quality system.
  • Handles crowds of 1,000 or more.
  • Accommodates multiple mics, plus CD/Tape input.
  • 50 watt amplifier
  • Two XLR balanced phantom-powered mic inputs, 1/4″ line input, line output, treble and bass controls.
  • 12 volt DC output and 1/4″ speaker output.


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Additional information
Weight 210 lbs
Dimensions 48 × 44 × 28 in