Radio Shack MPA-50 40W PA Amplifier Tested Working Good. Tested with microphone and speakers . Great sound . Has some scuffs and scratches. The top paint has some spots to the bare metal. No rust . Please look at the photos for description , details of the item for sale. Thank you. treasuregeek

OPTIMUS PA AMPLIFIER MPA-50, 40 WATT.

Liberty Xtreme MPA-5000 Specifications MPA-5000 rated power output: low frequency amp: 90 watts @ 4? continuous high frequency amp: 40 watts @ 16? continuous max SPL @ rated power: 115 dB; 122 dB project mode “on” General frequency response: 80 Hz - 15 kHz; project mode “on”: +8 dB from 2 - 12 kHz speaker types: 8 woofer, constant-directivity horn Bass / Treble control: 8 db cut / boost @ 100 Hz, 8 kHz Inputs line input: 1/4-phone, Hi-Z, unbalanced mic input: XLR female, Lo-Z, 15VDC phantom power balanced input: XLR female, switchable mic/line level 15VDC phantom power (switchable) Anchor CD input: audio & power for Anchor CD-1 CD player sensitivity for rated output: unbalanced line: -18 dBV (125 mVrms) balanced mic: -58 dBV (1.25 mVrms) balanced input: mic: -58 dBV (1.25 mVrms) line: -15 dBV (175 mVrms) Outputs Line Output (post fader): XLR male, 600?, active balanced DC Output: 12 Volts DC, 300 ma max. AC power requirements: 110 - 125 VAC, 50/60 Hz export model: 210 - 240 VAC, 50/60 Hz (250 watts maximum, 30 watts idle) AC accessory outlet: 110 - 125 VAC, 50/60 Hz export model: 210 - 240 VAC, 50/60 Hz (500 watts maximum) fuse rating: T 3.15A / 250V export model: T 1.6A / 250V dimensions (HWD): 22.5 x 13 x 10, 57 x 33 x 26 cm weight: 35 pounds, 16 Kg. Quick Use Guide Quick Use Guide Liberty Xtreme is an AC-powered sound system optimized for applications requiring very loud, clear sound. It has several signal input options, and a line output to connect with other systems. The speech project feature makes it ideal for both music or speech applications, indoors or out. You’ll need a microphone or some other input source before you get started. Here’s how easy it is to use 1. Set the unit in front of your audience on the floor, table or on a speaker stand. 2. Plug a microphone into a balanced mic input XLR jack, or plug an audio source into a line input. 3. Set all input level controls to minimum, and set bass and treble to the 12:00 position. 4. Plug the power cord in, then turn the power switch ON. Slowly increase the level control adjacent to the input used until desired volume is reached. 5. For music and indoor applications, set the speech project switch to OFF. For speech and outdoor applications, set the speech project switch to ON. 6. Adjust the bass and treble for desired sound quality. To operate the wireless mic system on wireless models, see “Wireless Operation” on pages 11 and 12. And for more detailed instructions, see the “Operation” section beginning on page 8

Up for sale is this Optimus MPA-50, 40 Watt PA Amplifier unit The amplifier is in working condition, has been tested and is ready for a new home.

Radio Shack 40 Watt PA solid state Amplifier MPA-50.

Radio Shack 40 Watt PA solid state Amplifier MPA-50.

Radio Shack 40 Watt PA solid state Amplifier MPA-50.