Phase Technology 8.4″ x 6.06″, 4 Channel Indoor/Outdoor Amplifier with WiFi / Bluetooth Capabilities

The OS-440 is the industry’s first outdoor smart amplifier. The OS-440 can live entirely outside, allowing unprecedented freedom when designing outdoor audio systems. Without being tethered to the house, the OS-440 can wirelessly connect to the home’s network, interface with DLNA servers and even allow for wireless multi-zone control. On-board Bluetooth functionality and a WiFi direct mode round out its wireless connectivity options.


Note: The OS-440 is designed to operate in humid, outdoor conditions. Do not place the OS-440 in a location where it is exposed to prolonged direct sunlight, precipitation, or where it may come in contact with water. The ideal location for an OS-440 is inside a cabinet. The OS-440 is not waterproof. If you do not have a dry, protected spot for the OS-440, we recommend using a weatherproof box like this one from Altelix to mount the amp onto an exterior wall.

  • ColorBlack
    Manufacturer’s Suggested Retail Price 
    Manufacturer’s CategoryAmplifiers
    Depth8.4 in / 213.36 mm
    Height1.75 in / 44.45 mm
    Width/Diameter6.06 in / 153.92 mm
    Shipping Weight5.3 lbs / 2.4 kg
    Carton Height5.75 in / 146.05 mm
    Carton Length11 in / 279.4 mm
    Carton Width10 in / 254 mm
    CertificationsCE, RoHS, UL60065, FCC
    Included AccessoriesAntenna, Euroblock, Power Supply
    Optional AccessoriesWeatherproof Box (Click Here)
    Input Impedance12K Ω
    Output TypeEuroblock
    Voltage Gain29.5 dB
    Magnetically BoostedNo