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 | ![[Image for AH4]](/images/products/AH4_angle1_scaled_320.jpg)  Professional audio player / control hub  |  | All-in-One Audio Demonstrator Model AH4
 
 
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 |  | Modular outputs: Digital Toslink®, analog audio, or HDMI-ARC (USB-C 2-channel digital audio coming soon)Plays uncompressed audio formatsPlays high bit rate MP3 filesRS-232 and RS-485 control pathwaysAutomatic customer music inputRJ9 ports (x8) for external controls Visual Volume control knob option
 Categories: Media Players, Modules, Interactive Switching, Headphone Demo, Ascentic, HDMI
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 | ![[Top view]](/images/products/AH4_top_scaled_100.jpg)  Top view  | ![[Angle 2]](/images/products/AH4_angle2_scaled_100.jpg)  Angle 2  | ![[Side 1]](/images/products/AH4_side1_scaled_100.jpg)  Side 1  | ![[Side 2]](/images/products/AH4_side2_scaled_100.jpg)  Side 2  | ![[Side 3]](/images/products/AH4_side3_scaled_100.jpg)  Side 3  | ![[Side 4]](/images/products/AH4_side4_scaled_100.jpg)  Side 4  | 
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 High Performance, Versatile Controls
 Audio Authority's AH4 AudioHub is the perfect fit in retail environments where high-quality music is required to demonstrate audio products such as quality soundbars, headphones, and speaker docks. The AH4 is more than a music player – it is a programmable nerve center that can coordinate multiple devices to create a dynamic experience. 
 Ports for external controls provide a simple way to start music for a demo and adjust the volume. The retail-hardened interface keeps performing without any active maintenance. The AH4 accepts FLAC, WAV, OGG, and MP3 formats to present premium quality speakers, headphones, and soundbars at their best. Control options include touch screen, touch panel, push buttons, touchless sensors, or rotary controls, depending on the type of interface desired.
 
 
 Media
 Recommended formats are FLAC, WAV, OGG, and MP3Songs play in order according to filenames (01, 02 .. 99)MP3 files should be a high bit rate (up to 320 kbps) for demonstrating superior quality headphones
 Customer input automatically senses audio signals and switches to the customer's music player
 Operation
 
 After an adjustable period of inactivity, the player times out, in consideration for store employees 
 Simple controls for music and volume adjustments invite the shopper to interact with merchandise
 Switch mode transforms the AH4 into an audio switcher ideal for demonstrating four products
 Control
 
 Serial pathways include RS-232 and RS-485 communicationOptional control knob with Visual Volume adjusts volume on all outputs, and push to playControls may include selector buttons, sensors, touch panels, touchscreen, or multi-function control knobTransport commands include Play Next / Pause, Previous Track, Volume Up, and Volume Down
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 SpecificationsCase dimensions including flange: 4.1 x 7.5 x 1.5 (HxWxD, inches)Supported media: Sandisk industrial-grade microSD or SDHCFile formats: FLAC, MP3 (to 320kbps) OGG or WAVImportant: Filenames must begin with a two-digit number (01, 02, 03 .. 99), or they will not play Example: "03 Never Forget - Fleetwood Mac.wav"The card must be formatted FAT32 or exFAT 
 
 Troubleshooting
 
 
Music does not play
 Important: Filenames must begin with a two-digit number (01, 02, 03 .. 99), or they will not play Example: "03 Never Forget - Fleetwood Mac.wav"
 Creating Content
 
 Recommended encoders:
 
 Meta Data
 
 Make sure that all audio files are free of images in the metadata. In some cases, an image or other content in metadata may prevent playback.
 
 
 |  |  |  | Status LightsThe green power LED blinks indicating the AH1 has power. 
 The yellow Status LED indicates "play" and SD card status:
 Blinking = Playing contentBlinking Fast = Customer input activeOff = No card foundOn Solid = Card could not be mounted; bad card or format
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 LiteratureAH4 Focus Sheet  2.01 MiB Model AH4 Audio Demonstrator Focus Sheet. Updated October 7th, 2024
 
 ManualsAH4 Manual  1.36 MiB Model AH1 Demonstration AudioHub Instruction Manual. Updated March 30, 2021
 
 
 
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