AtlasIED AA400PHD 400W 6‑Input Mixer Amplifier with Push‑Here Diagnostics

AtlasIED AA400PHD 400W 6‑Input Mixer Amplifier with Push‑Here Diagnostics

The AtlasIED AA400PHD delivers 400 W of robust audio power and intelligent diagnostics in a full‑featured, 1U rack-mountable chassis. Ideal for business paging, background music (BGM), speech privacy, and music-on-hold systems, it offers four balanced mic/line inputs (with phantom power) and two stereo summing line channels. Its patented Push-Here Diagnostic® (PHD) system automatically tests speaker wiring and tap settings—ensuring reliable operation from setup through deployment.

Designed for installation versatility, the AA400PHD supports 4 Ω, 25 V, and 70.7 V speaker lines with remote input selection and level control over Phoenix connectors. Additional features include an assignable Zone 2 output, contact-closure muting for paging priority, remote VCA level control, and a Bridge In/Out function for chaining multiple amplifiers. A rugged steel chassis, ETL listing to UL 60065, and a three-year warranty make this a dependable choice for professional audio environments.

Key Features

• 400 W Multi‑Load Power – high output for 4 Ω, 25 V, or 70.7 V speaker systems
• Push‑Here Diagnostic® (PHD) – automatic speaker line wiring and tap verification
• Six Input Channels – four mic/line (phantom capable) and two summing stereo line inputs
• Remote Control & Muting – Phoenix‑based VCA level, input selection, Zone 2 mix, and paging mute
• Bridgeable Design – allows chaining without external relays for expanded coverage

Technical Specifications

• Dimensions: 16.54″ W × 3.66″ H × 14.6″ D (with feet); 3.48″ H without feet
• Weight: 34 lbs (net); 37.2 lbs (shipping)
• Inputs: 4× balanced mic/line with phantom; 2× summed line inputs
• Outputs: 400 W to 4 Ω / 25 V / 70.7 V; Zone 2 mix output; Preamp out / Amp in loop
• Frequency Response: 50 Hz–15 kHz; THD ≤ 0.5% at 1 kHz
• Connectors: Phoenix (input/channel/remote); RCA for preamp
• Certifications: ETL listed per UL 60065; CE‑listed
• Chassis: Black steel with ABS/AZ panel; 1U rack form factor
• Warranty: 36 months from date of purchase

What’s Included in the Box

• 1 × AtlasIED AA400PHD mixer amplifier (1U chassis)
• 1 × Detachable IEC power cord
• 1 × Owner’s manual and warranty documentation