AP-16 Audio Player

  • 31316 AP-16 Audio Player
  • 31316 AP-16 Audio Player - w/SD Card Inserted
In Stock: 10
Product ID 31316


The AP-16+ allows you to playback high-quality, stereo WAV files for a standard SD card through two, booming 20 W amplifiers (one per channel).

Now, controlling powerful, booming sound is as simple as loading up your SD card! Advanced features like built-in randomization, auxiliary inputs, and the ability to use dry-contact, (optically isolated) 12 to 24 DC, or a PIR (or compatible) sensor put the AP-16+ in a class of its own. For stand-alone control the AP-16+ includes pre- and post-play delay potentiometers, as well as a relay that is active while your audio plays. Need background audio while your prop is idle? No problem, the AP-16+ includes an ambient loop control to do just that.

Key Features:

  • User-configured baud rate (2400 or 38.4 k) for serial control
  • User-configured address allows up to four AP-16+ boards on one serial connection
  • Plays stereo WAV files (16-bit, PCM, up to 44.1 kHz)
  • Files stored on standard SD card (FAT or FAT32 format)
  • 2.1 mm, center-positive connector for DC power
  • Easily updated as new features become available, update loads from SD card

Note: Power Supply is not included with this product.  Parallax recommends the 18 V, 3.3 A power supply (#750-00011) for the AP-16+ Audio Player 


  • 24 stand-alone files under manual control
  • Optional, auto-playing ambient file (AMBIENT.WAV)
  • Manual input via (normally open) dry-contact, (optically isolated) 12-24 VDC input, or PIR sensor
  • Eight, dry-contact auxiliary inputs
  • Relay output active when file plays (N.O. and N.C connections provided)
  • Pre- and post-play delay potentiometers (manual mode, only)
  • Dual 20 W amplifiers (one per channel)
  • TTL serial control for connection to host microcontroller - unlimited files under serial controleature/spec
  • Power requirements: 12-18 VDC (3 A recommended)
  • Communication: 3-pin male header for simple connection to BoE and similar products
  • Dimensions: 4.25 x 4.50 in (107.95 mm x 114.30 mm)
  • Operating temp range: 32 to 158 °F (0 to 70 °C)


Downloads & Documentation

Download Details More Info
AP-16+ Product Document - 1.17 MB | updated: 03 Oct 2012 - 12:32 pm
AP-16+ BASIC Stamp Example Code - 3.74 KB | updated: 03 Oct 2012 - 12:33 pm
AP-16+ Firmware Update - 16.05 KB | updated: 03 Oct 2012 - 12:34 pm
AP-16+ Demonstration MP3 Audio Files - 409.67 KB | updated: 03 Oct 2012 - 12:35 pm

Additional Resources