AtlasIED AA50PHD 4-Input, 50W Mixer Amplifier with Automatic System Test (PHD)

When dependable paging, background music (BGM) and speech privacy are mission‑critical, the AtlasIED AA50PHD mixer amplifier gives installers a faster, more reliable solution. This pro amplifier combines 50 watts of clean output with 25V/70.7V or 4Ω compatibility, so you can drive distributed ceiling speakers or low‑impedance zones without distortion. The AA50PHD’s patent‑pending Push Here Diagnostic (PHD) automates speaker line verification to catch wiring errors, incorrect tap settings and shorts during setup—reducing site visits and ensuring system integrity for security, surveillance and monitoring environments.

With four inputs (mic/line with optional phantom power plus two stereo-summed line inputs), preamp output for external processing, and Remote Input Select/Remote Level Control support, the unit adapts to paging mic feeds, music sources, MOH and digital receivers. Assignable Zone 2 output and contact‑closure muting provide paging priority and flexible zone control for offices, retail, education, healthcare and industrial facilities. NDAA compliant and built for professional installations, the AA50PHD streamlines commissioning and ongoing operation. Specify the AtlasIED AA50PHD for secure, scalable paging and BGM—contact sales or add to your design today.

• Simplifies installation and reduces callbacks with the patent‑pending Push Here Diagnostic (PHD) that checks speaker wiring, tap settings and shorts
• Delivers dependable 50W into 25V/70.7V distributed lines or 4Ω low‑impedance loads for clear paging, background music and speech privacy
• Four flexible inputs including a mic/line input with optional phantom power plus two summing line inputs for music, MOH or digital sources
• Remote Input Select (RIS) and Remote Level Control support for user control up to 200 ft via AtlasIED wall plate, ideal for multi‑room installations
• Assignable Zone 2 output and contact‑closure mute for paging priority, multi‑zone routing and security/monitoring applications