Atlas Sound AA100PHD 4-Input 100W BGM Mixer Amplifier

Product Overview

The Atlas Sound AA100PHD is a four-input, 100-watt commercial mixer amplifier built for distributed paging and background music systems in offices, retail spaces, and hospitality venues. It drives 25V, 70.7V, or 4-ohm speaker lines, so a single chassis covers both constant-voltage distributed audio installation and low-impedance zones. The built-in Push Here Diagnostic (PHD) speaker line test verifies wiring and tap settings at the press of a button, cutting troubleshooting time during commissioning. For integrators specifying a BGM mixer amplifier with paging priority and music-on-hold support, the AA100PHD handles all three roles in one unit.

Product Description

The AA100PHD accepts two balanced mic/line/tel inputs with selectable 24 VDC phantom power and two unbalanced stereo-summing line inputs, accommodating paging microphones, media players, and digital music receivers in a single mixer amplifier. A rear-panel DIP switch configures an input-assignable Zone 2 output, letting the installer create a second output mix from any combination of the four inputs without external processing. Priority muting is built in: Inputs 2, 3, and 4 can be set to mute on signal from Input 1, with variable mute sensitivity, so pages always override background music in commercial paging system deployments. The headline feature is the patented Push Here Diagnostic (PHD) test. Once the speaker lines are connected, pressing the PHD button automatically verifies that speaker tap settings do not exceed the amplifier's rated power, that no speaker is mistakenly tapped at 8 ohms, and that the wiring is free from shorts — a significant time saver on multi-speaker 70V installations. Remote Input Selection and Remote Level Control support the optional AtlasIED WPD-RISRL wall plate, giving end users input and volume control up to 200 feet from the amplifier. A preamp input/output loop accommodates external processors, and a line output feeds downstream amplifiers or recording devices. Contact closure mute terminals integrate with fire alarm or emergency muting systems. The unit sits on a tabletop or shelf as delivered, and an optional AARMK2-5 kit adapts it for equipment rack installation. Pair it with AtlasIED 70V ceiling or surface mount speakers from Creation Networks for a complete distributed audio system.

Key Features

• Push Here Diagnostic (PHD) Speaker Line Test — One-button automated test verifies tap settings, impedance, and wiring integrity before the system goes live.
• 100W into 25V, 70.7V, and 4-Ohm Loads — One amplifier covers constant-voltage distributed audio and low-impedance speaker zones.
• Four Flexible Inputs — Two balanced mic/line/tel inputs with phantom power plus two stereo-summing line inputs handle paging mics, media players, and music sources.
• Paging Priority Muting — Inputs 2–4 mute automatically on Input 1 signal with adjustable sensitivity, keeping announcements intelligible over music.
• Input-Assignable Zone 2 Output — Rear DIP switch builds a second output mix from any inputs for music-on-hold or secondary zones.
• Remote Wall Plate Support — Works with the optional WPD-RISRL plate for input selection and level control up to 200 feet away.
• Preamp Loop and Line Output — Insert external processors or feed additional amplifiers without adapters.
• Contact Closure Mute — Dedicated terminals integrate with life-safety and emergency muting circuits.
• Rack Mountable — Optional AARMK2-5 kit adapts the tabletop chassis for standard equipment racks.

Typical Applications

• Commercial meeting space background music and paging
• Conference room audio with paging overlay
• Government space announcement systems
• Multi-purpose room sound systems
• Training room program audio
• House of worship overflow and lobby audio

Technical Specifications

Frequently Asked Questions

Can the AA100PHD drive 70V ceiling speakers and a 4-ohm speaker at the same time?
The amplifier provides 25V, 70.7V, and 4-ohm outputs; total connected load across the selected output must stay within the 100W rating. The PHD test confirms your tap settings before you power up the zone.

How does paging priority work?
Inputs 2, 3, and 4 can be configured to mute when signal appears on Input 1. A variable mute sensitivity control sets the threshold, so background music ducks reliably for pages without false triggering.

What does the PHD button actually test?
It verifies that connected speaker tap settings do not exceed the amplifier's rated power, that no speaker is mistakenly tapped at 8 ohms, and that the speaker wiring is free from shorts.

Does it support remote volume control?
Yes. The Remote Input Selection and Remote Level Control feature works with the optional AtlasIED WPD-RISRL wall plate at distances up to 200 feet from the amplifier.

Can I rack mount it?
Yes. The chassis is tabletop by default; the optional AARMK2-5 rack mount kit adapts it for standard 19" equipment racks.

Is it suitable for music on hold?
Yes. The input-assignable Zone 2 output can deliver a separate mix for music-on-hold feeds alongside the main paging and BGM output.

What warranty and support apply?
AtlasIED covers the AA100PHD with a three-year limited warranty, and Creation Networks provides pre-sale system design help and post-sale support.