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    SKU: OSD-PA90

    OSD PA9060W 70V Commercial Amplifier 3x Microphone 3x Source Inputs

    Purchase OSD PA90 70V Commercial Amplifier 60W 3x Microphone 3x Source Inputs
    • Outdoor Speaker Depot SKU: OSD-PA90 70v-commercial-amp-pa90
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    The OSD Audio PA90 60-Watt commercial 70-Volt amplifier is the perfect control center for restaurants, meeting halls and other small commercial venues. It's versatile, powerful and affordable, and it features three XLR microphone inputs and three signal-level inputs. The MIC 1 Input has priority over the other inputs. When the MIC 1 Input signal is present, the PA90 will automatically mute other inputs and only MIC 1 Input is available to output. It also has front-mounted gain control knobs for master bass and treble. The PA90 also has chime and alarm buttons, and it can be connected to CD players, TV outputs, smartphones and more.

    7 Inputs
    There is a total of 7 inputs on the rear panel of the PA90 Commercial Amplifier including 3 MIC inputs, 3 AUX inputs, and 1 TEL input with input gain adjustment. The MIC inputs use balanced XLR connectors. Each MIC input has a Line/Mic level DIP switch (Switch 1) and a 24V Phantom Power Supply On/Off DIP switch (Switch 2). The AUX inputs use conventional RCA connectors. The TEL input uses a 3-pin terminal block, which allows you to connect a telephone signal as an input for the PA90. MIC1 input has priority over the other inputs. When MIC 1 input signal is present, the amplifier will automatically mute other inputs and will only allow MIC 1 input available for output.

    Overload Protection 
    The OSD Audio PA90 also has a built-in protect function. When it senses a short circuit, or over-heating, or overload, this function will be automatically switched on, muting the amplifier and the red "PROTECT" LED indicator will illuminate. 

    Rack Mount Case 
    The case of the PA90 amp is a 2U rack space style case, allowing you to mount it easily into your existing power racks.

    Warning: California's Proposition 65


    This product can expose you to chemicals, including vinyl chloride, which is known to the State of California to cause cancer. For more information, go to

    • Amplifier Type: 100V/70V/8 Ohm Commercial Mixer/ Integrated Power Amplifier
    • Amplifier Class: Class A/B
    • Channels: 1
    • Power Handling: 30W(RMS)/ 60W(MAX) Per Channel @ 8 Ohm
    • Power Handling: 30W(RMS)/ 60W(MAX) Per Channel @ 70V
    • Power Handling: 30W(RMS)/ 60W(MAX) Per Channel @ 100V
    • Frequency Response: 55Hz-15kHz, (+0dB, -3.0dB)
    • Power bandwidth: 55Hz to 15kHz
    • Signal to Noise Ratio: MIC: >55 dB, LINE: >60 dB, AUX: >70 dB, TEL: >70 dB
    • Inputs: 3 Mic, 3 AUX, Tel/Page (Mixed)
    • PTT Push To Talk, 24VDC, and Telephone Interrupt Back Panel Connections
    • Front Panel Variable Knobs: Mic 1, 2, 3; Aux 1, 2 ,3; Bass & Treble, and Master Volume
    • Chime and Alarm Front Panel Push Buttons
    • Rack Mountable: 2U Rack Space Style / Mounts Included
    • Dimensions (L x D x H): 19" x 13.3" x 3.6"
    • Weight: 16.5 lbs
    • Warranty: 2 Years
    17 Questions asked
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    What's on your mind?

    ahmad asad • 12/17/2019, 2:17:43 PM where is the outpot in the pa-90 70v amp for the speekers
    Customer Service • 12/17/2019, 2:17:43 PM
    This has a simple terminal strip located on the back of the amplifier with output for 8 ohm, 70V or 100V. (note each or a summed mono output with a single positive output and a common ground). This is really a commercial amplifier/preamp that is ideal for running multiple 70V and 100V speakers. It will run a pair of 8 ohm speakers without transformers (from the 8 ohm connection) but could (based upon the tap from the transformers) run anywhere from 2 to 20 speakers (70V commercial speakers). MA/TL
    ahmad asad • 12/17/2019, 2:17:43 PM can i connect 10 150w 8" speekers to it and 2 subwoofers ?
    Customer Service • 12/17/2019, 2:17:43 PM
    We would not recommend connecting the 10 8 ohm speakers, especially rated at 150 watts. This is only a 60 Watt amplifier that works best in the 70V and 100V settings. In order to use 8 ohm speakers, you would need to purchase our 70V Commercial Transformer for each speaker and connect to the 5W (watt) setting. These are all stereo summed mono speakers wired in parallel. The transformers protect both the PA-90 and speakers. I do not believe you would be able to utilize the two subwoofers. The best choice for your application (sounds like you have all the speakers and subs already) would be to look at our OSD MX1260, 12 channel (60 watts per). This would give you the flexibility of driving all your speakers either in mono or a combination of stereo pairs plus it will have outputs for your two subwoofers. This amp provides maximum flexibility for any configuration and it is easy to setup. MA/TL
    Ben • 12/17/2019, 2:17:43 PM What kind of power will I need if I want to run 8-12 70V speakers off of this amp?
    Customer Service • 12/17/2019, 2:17:43 PM
    Hi Ben: This 70V Integrated Power Amplifier is rated at 60 watts so you would set your 70V taps at 5W per speaker for the 8 to 12 speakers. It really is a true 60 watts featuring 3 mic inputs and three additional inputs for a total of six inputs. TL 1246
    Clee • 12/17/2019, 2:17:43 PM I see the word chime on the 70 volt amp. How is it activated, what does it sound like. I am looking to use it as a lockdown tone for a school.
    Customer Service • 12/17/2019, 2:17:43 PM
    Hi Clee, By pressing the button it sends a chime to all the speakers connected to the PA-90 CL 1351
    Sunday • 12/17/2019, 2:17:43 PM Can I get an MTR-250 70V/100V Amp Transformer 250 watts RMS to work with this amp if am looking at using 12 ceiling 70v speakers for a conference room paging system. And can the OSD PA-90 work with a Shure wireless microphone receiver with all the 12 speakers.
    Customer Service • 12/17/2019, 2:17:43 PM
    Hi Sunday, You do not need the MTR250 since it is a passive device used to convert a 250 watt 8 ohm amplifier to 70 Volt. The PA60 is a 60-watt integrated amplifier (with a choice of 70V, 100V or 8 ohm Mono) which should work for your application making sure to set the taps between 2.5W to 5W on each speaker. The Shure wireless microphone will work fine with the amplifier. The PA90 features three mic inputs. Mic one overrides the auxiliary input when activated. Mic two and three need to be selected as your source to work. The unit also features multi- voltage so it will work in Nigeria. TL/MA 1558