FRONT PANEL FUNCTION DESCRIPTION
1 Power Switch
2 Music bass adjustment knob
3 Music treble adjustment knob
4 Left and right channel balance knobs
5 Music volume adjustment knob
6 Microphone volume adjustment knob
7 Microphone reverberation effect adjustment knob
8 Microphone delay time adjustment knob
9 Mode key can select audio input mode (AUX-BT-FM-SD/TF-USB)
10 In different modes there are functions such as previous track previous channel and reduced reverb effect
11In different modes there are functions for next song next channel and enhancing reverberation effect.
12 In different modes there are pause play and search functions
13 Repeated playback mode selection
14 Music sound effect selection
15 USB port supports up to 64GB capacity USB drives in FAT32 format 16.SD/TF card insertion port supports up to 64GB capacity USB flash drive in FAT32 format
17 Microphone insertion port Harwa AV-645 Amplifier Black
BACK PANEL DESCRIPTION
1 Audio signal input port
2 Radio antenna
3 Right channel output interface
4 Left channel output interface
5 DC power input port
6 AC power input port
Function Instructions
1 Switch on/off operation Press the switch to the ON position to turn on the machine and press the switch to the OFF position to turn off the machine
2 AUX/DVD mode playback The audio signal of external devices is played by connecting an audio cable to the signal input jack on the back board of this product
3 Bluetooth mode playback Press the MODE key to enter Bluetooth mode open the device Bluetooth search for the Bluetooth name of this product pair and connect and you can play the audio on the device
4 USB/SD card mode playback Insert a USB drive or SD card containing MP3 format files into a USB or SD interface for playback
5 FM mode playback Press the MODE key to switch to FM mode for playback press the PLAY key to search for stations and press the PREV/NEXT keys to select stations
6 Recording function When a USB drive or SD card/microphone is inserted into the device long press the MODE key to record sound from the microphone Press the PLAY key to pause or continue recording Press the previous/next/MODE key to exit recording mode and play the recorded audio
SYSTEM PARAMETER
Input Voltage AC 230V/DC 12V
Load Impedance 4-16
Harmonic Distortion 0.05 Percent 4W 1KHz
SNR 85DB
Frequency Response Range 20Hz-20KHz
FM Frequency Band 87MHz -108MHz
Treble Adjustment Amplitude 12DB 10KHz
Bass Adjustment Amplitude 12DB 100Hz
Input sensitivity 250mV 47K
Wireless Transmission Distance Of Audio Signals 10 Meters Accessible
What's in the box
1 x Mini Audio Power Amplifier Karaoke System Hi-Fi /Aux/FM/SD/USB AV-647 SA
