✅ APE lossless decoding board ✅ Supports USB/SD card/FM

1: Supports stereo Bluetooth speaker function, which means that mobile phones and other devices can send music to the speaker via Bluetooth (A2DP); 2: Support controlling mobile phones and other devices to switch up and down music and adjust volume through Bluetooth on the speaker end; 3: Bluetooth is based on the Class2 power level and adopts the Bluetooth 4.0 specification, compatible with Bluetooth 3.0 and below applications, with a transmission speed of up to 3Mbit/s; 4: Supports playing music on SD/MMC Cards and USB drives, with music formats including MP3, WMA, APE, FLAC, and WAV (excluding license); 5: Support FM, frequency range: 87MHz~108MHz; 6: Support AUX input, which means external audio sources can be connected to the speaker through AUX and the volume can be adjusted on the speaker; 7: Support speaker status broadcast, which can play various speaker statuses and modify the broadcast language according to user needs; 8: Support function switching hotkeys (one click on Card, USB drive, AUXIN, FM, Bluetooth playback) (the MODE button on the remote control is the function switching button); 9: Support firmware encryption; 10: Support USB connection to computer for firmware upgrade/mass production; 11: FAT16, FAT32, EXFAT/Fat64 file system support; 12: Support directory levels: 8 levels of subdirectories; 13: Supported number of files: There is no limit to the number of files in a single directory, and music files up to 9999 in total can be supported; 14: Support SD/MMC/SDHC; 15: Supports USB 2.0, fully compatible with USB 1.1; 16: 32 level volume (configurable volume level); 17: Supports background Bluetooth, allowing for playback of card/USB music and FM with Bluetooth connection; 18: Support Spp remote control, which means that after installing APK or APP on the phone, it can support the remote control function of the speaker; 19: Support DAE virtual sound effects; 20: Support PEQ audio compensation sound effects; 21: DC input, suitable for power supplies ranging from 9V to 12V.

• MODE: Press this key to cycle through the selection of USB → SD → LINE → FM → BLUE. Long press this button in FM and AUX mode to enter recording, and short press this button in recording mode to enter playback recording. • PREV: Short press in USB/SD/BT playback mode to select the previous track, long press to fast rewind (BT invalid); short press to select the previous radio station in FM listening mode, long press to search backward for radio stations; AUX mode is invalid. • NEXT: Short press the NEXT key in USB/SD/BT playback mode to select the next song, long press to fast forward (BT invalid); short press to select the next radio station in FM listening mode, long press to search forward for radio stations; AUX mode is invalid. • PLAY/PAUSE: Pause playback in USB/SD/BT mode; long press this key in radio mode to enter automatic radio search, short press in FM/AUX mode to mute. • REP: When playing USB/SD, switch playback mode: RANDOM / SINGLE REPEAT / ALL REPEAT / FOLDER REPEAT. Default playback mode is ALL when powered on, then switch to SINGLE, and RANDOM for further press. Invalid under BT/FM/AUX mode. • EQ: Under USB/SD mode, switch sound field mode, including 7 digital EQ modes: NORMAL → ROCK → POP → Classic → JAZZ → SOFT → DBB. Displayed as Eq1-Eq7 on screen.

The default main volume when turned on is at maximum (level 32), with Bluetooth status as the default. USB/SD supports hot plug priority, and when power is off, it remembers tracks/radio stations and status.

• POWER: STANDBY ON/OFF • MODE: Press this key to cycle through the selection of USB → SD → BLUE → FM → LINE. Long press this key in FM and AUX states to enter recording, and short press this key in recording state to enter playback recording. • PREV: In USB/SD/BT playback mode, short press to select the previous track, long press to fast rewind (BT invalid); in FM listening mode, short press to select the previous radio station, long press to search backward for the radio station. AUX mode is invalid. • NEXT: In USB/SD/BT playback mode, short press to select the next track, long press to fast forward (BT invalid). In FM listening mode, short press to select the next radio station, long press to search forward for the next radio station. AUX mode is invalid. • VOL+: Increase volume • VOL -: Volume decrease • REP: Switch playback mode during USB/SD playback: SINGLE / ALL / RANDOM (Default ALL when powered on, then SINGLE, then RANDOM). • STOP: Stop playback under USB/SD mode, invalid for other modes. • MUTE: Press to mute under all states, press again to cancel mute. • EQ: Under USB/SD mode, switch sound field mode, 7 digital EQ: NORMAL, ROCK, POP, Classic, JAZZ, SOFT, DBB. Displayed as Eq1-Eq7. • PLAY/PAUSE: Short press once in USB/SD/BT playback mode to pause, press again to play; press this button in FM mode to trigger automatic radio search. • Number key 0~9: Direct track selection under USB/SD mode (input multi-digit number). In FM mode, recall saved radio stations or directly input frequency to tune radio.

LCD screen: The LCD screen displays the working status and playback time clearly at a glance. Anti power reverse connection design: Anti power reverse connection design, even if the power is reversed, it will not burn out the product.

📋 Parameter Spec

Interface Definition

Kind reminder: manual measurement may have slight errors