This kit includes:

2x 3d printed chassis ( amp / power adaptor)

2x circuit modules  ( AP55 Decoder  & Amp / adaptor 12v)

Pack of wires + connectors and plugs for speakers and power

AP55 

Bluetooth Amplifier FM USB Card Wireless Module with Remote

• Support Bluetooth 5.0 Bluetooth name: GD-82EM
• Support MP3 WMA WAV format music
• Support radio, FM band 87.5-108.0MHZ
• Support external audio source input AUX
• Infrared remote control from 4 to 7M
• Support power off memory function: memory before the power off songs and volume
• Support switching between U disk, TF card , Bluetooth, AUX, FM radio
• Supports Bluetooth automatic callback
• The power supply voltage ranges from 8 to 24V
• Support button functions: previous song, next song, volume up, volume down, FM
  up, M down, play/pause, mode conversion, single cycle
• Bluetooth support: previous song, next song , volume up, volume down, play/pause
• Support infrared remote control function: last song, next song, volume increase, volume decrease, play/pause, mute, mode conversion, single cycle, shutdown, EQ, key song selection and FM station selection
• Voice prompt: Voice prompt in functional mode, Bluetooth connection success prompt, volume up to maximum prompt, volume down to minimum prompt
• Support dual channel output, output horn power 4ohm 50W * 2

Function Description:

• Power on, the digital display displays H1, output startup voice, and the startup volume is 30% by default; The volume adjustment display is divided into 15 sections.
• P/P button, play and pause button; Press and hold 35 to turn on and off.
• PRE/V-button, Bluetooth, TF card, USB mode: short press the previous track, long press volume reduction; FM mode: Short press to search up channel, long press to reduce volume.
• NEXT/V+ button, Bluetooth, TF card, USB mode: short press a song, long press the volume to add; FM mode: Press down to search, and press and hold to add volume
• MODE button, short press the key mode to convert between U disk, TF card, Bluetooth, FM-AUX
  • When there is only U disk: Switch the sequence U disk – Bluetooth – FM-AUX
  • When there is only TF card: Switch the order TF card – Bluetooth FM-AUX
  • When there is no U disk or TF card: switch sequence Bluetooth-FM-AUX
• When inserting the USB flash drive, the USB character lights up: indicates that the USB mode is switched to SD character lights up when TF card is inserted: indicates to switch to TF card mode
  • blue: indicates to switch to Bluetooth mode
  • Triangular character to the right lit: Playing status
  • Double vertical character on: Paused
  • FM character light: Enter radio mode
  • When the external plug is inserted, the MP3 character lights up: enter AUX mode
  • Clock characters: Show the song playing time when the song is playing; FM displays the frequency of the searched broadcast station
• Bluetooth status: Press MODE to switch to Bluetooth mode, search for Bluetooth device name GD-82EM have a prompt is displayed after the connection is successful