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NanoPlayer mkII


The NanoPlayer mkII is a very versatile OEM audio board, designed for integration in order to add audio to various devices, pieces of equipment, vehicles…

The NanoPlayer mkII reads audio files, in WAV and MP3 formats, stored on SD/SDHC memory card. Playback messages, music or sound effects, starting to the power on. The activation of the input contact, or an order transmitted by infrared remote, starts playing one or more associated files.

The organization of files on the card is simple and requires only a file manager.

The first folder is read to the power on. A second folder is read when the input contact is triggered or the infrared control is used.

The filenames and folders names define the mode of playing : random or sequential playback, partial or continuous playback, interruptible or uninterruptible, loop or once…

  • Autoplay: playback automatically starts on powering on (configurable).
  • Interactivity: one input on dry contact is available to trigger playback when activated, either on detection or on selection.
  • Low power consumption: the player’s consumption is very low thus offering long autonomy when powered on battery. The Nanoplayer mkII is therefore suitable for outdoor applications using solar power supply.
  • Integrated amplifier: connect directly onto speakers or stereo line output.

NanoPlayer mkII is a flexible audio source which can be used for large kind of OEM installations :

  • Integrate the NanoPlayer mkII into pieces of furniture to create musical items.
  • Add the sound dimension to objects triggering broadcast on presence detection.
  • For industrial applications, create an automated message box.
  • Install audio information posts in gardens and parks. The low power consumption allows to use a power supply system with solar panel and battery.
  • Add interactive audio to models, games…

Interfacing and Connectivity

  • Status LED
  • 2 tactile switches (volume + / volume -)
  • Infrared sensor – Protocol: Sony SIRC, 12 bits, 38 kHz carrier
  • SD card slot
  • Unbalanced line-level stereo audio output on a standard 3.5 mm (TRS) jack
  • 2 headphone stereo audio outputs on a standard 3.5 mm (TRS) jack
  • Class D amplified speaker stereo audio output on 3.5 mm wire-to-board terminal block
  • An input contact on a 3.81 mm pluggable terminal block (typical debounce time: 100 ms)
  • Power supply output on 3.81 mm pluggable terminal block
  • 1 × 10 pins header (2.54 mm): volume +, volume -, power supply output, input contact (typical debounce time: 100 ms)
  • 1 × 4 pins header (2.54 mm): amplified speaker stereo audio output
  • External DC power supply chassis socket – Plug Ø 2.1 mm / 5.5 mm

Audio File Formats Supported

  • MP3 (.mp3): MPEG-1/2 Audio Layer III, stereo, 16 bits, 44.1 kHz, from 32 kbit/s to 128 kbit/s, CBR (Constant Bit Rate) or VBR (Variable Bit Rate), with or without ID3v1/2 tags¹
  • WAV (.wav): stereo, 16-bit LPCM, 44.1 kHz, WAVE_FORMAT_PCM

¹ Some ID3v1 or ID3v2.4 footer tags might cause unexpected noises at the end of the files.

Storage Devices

  • File system supported: FAT32
  • Accepted storage device types:
    • SDSC cards
    • SDHC cards
  • Accepts 2 folders maximum at the root, containing up to 999 files each

Audio Amplifiers

  • Speaker output:
    • 2 × 8 W – 8 Ω, THD+N = 1 %, 1 kHz
    • 2 × 10 W – 8 Ω, THD+N = 10 %, 1 kHz
    • 2 × 13 W – 4 Ω, THD+N = 1 %, 1 kHz
    • 2 × 16 W – 4 Ω, THD+N = 10 %, 1 kHz

Power Supply

  • Player power supply input:
    • Nominal voltage: 12 V DC
  • Supplied mains adapter input:
    • Voltage: from 100 V to 240 V
    • Frequency: from 50 Hz to 60 Hz

Current Consumption (12 V supplied)

  • Typical consumption in playback with a SD card, without amplifier: 140 mA
  • Recommended power supply for full use of the device – output current: 3.45 A

Thermal Information

  • Operating ambient temperature: from 0 to +60 °C
  • Storage temperature: from -20 to +60 °C


  • Width: 70 mm
  • Height: 17 mm
  • Depth (with the pluggable terminal blocks): 83 mm


  • 108 g (with the pluggable terminal blocks)