Owi Incorporated AMPMA70V40 70V 40W Digital Mini Amplifier

Product Description

The OWI INCORPORATED AMPMA70V40 is a 70-volt, 40-watt digital mini amplifier designed for distributed audio applications in commercial and institutional settings. Operating on the 70-volt constant-voltage standard, this compact unit drives multiple speakers across long wire runs without significant signal loss. Licensed audio and low-voltage electricians typically install this type of amplifier in background music, paging, and sound reinforcement systems. Its digital amplifier design delivers efficient power conversion in a small footprint, making it well suited for spaces where rack or cabinet space is limited.

This amplifier is intended for 70-volt distributed speaker systems commonly found in restaurants, retail environments, offices, schools, and houses of worship. The 70V constant-voltage architecture allows installers to tap multiple speakers on a single circuit, simplifying zone wiring. At 40 watts output, it is sized for small to mid-size zones where moderate coverage is required. Installation is typically performed by licensed low-voltage or audio contractors familiar with 70V system design and NEC low-voltage wiring requirements.

Key Features

• 70-volt constant-voltage output for distributed multi-speaker installations
• 40-watt continuous power output suitable for small to mid-size audio zones
• Digital amplifier topology for efficient power use and reduced heat generation
• Compact mini form factor conserves installation space
• Sold as a single unit

Compatibility

Designed as an OEM-style replacement or new-install unit for 70-volt distributed audio systems using standard 70V-tapped speakers and transformers.

Installation Notes

Installation should be performed by a licensed low-voltage or audio contractor in accordance with NEC Article 725 and applicable local codes. Disconnect and de-energize all power sources before making any wiring connections. Verify that the total speaker load wattage across all taps does not exceed the amplifier rated output of 40 watts. Do not connect this unit directly to 8-ohm or 4-ohm speaker systems without an appropriate 70V transformer tap.