
2 3
Phone In
Schematic diagram of interface
USB input:The jack can read storage devices such as USB
flash drive(Insert U disk automatically switch to MP3 mode)
Indicator light:
1.Bluetooth waiting for connection:Indicator Light blue flashing;
2.Insert U disk / Bluetooth Connect to the mobile phone:Indicator
light is normally on blue;
3.Single cycle:Indicator light is normally on purple.
Mode button:
1.single press:Pause / play
2.Long press:Bluetooth Open / close(No insert U disk)
3.Long press:switch Bluetooth / MP3(insert U disk)
single press:Next song
Long press:volume increase
single press:Previous song
Long press: volume discrease
Aux IN:Mobile
phones or MP3 input
Reverb:Timbre modification Mode switching:Mp3/Bluetooth
Bass: Low frequency signal control Treble:middle High frequency signal control
Power indicator:
1.Non-charging state:Display blue when power is enough; display purple when power
is low;
2.charging state:Purple light blinks during charging, turns to purple light(stop blink)
after full-charged.
Recording button ( this button is invalid when there is no U Disk inserted)
How to turn on Recording Function?
1. Insert the U disk, click to start recording (the indicator light flashes red), click again to end
the recording and play this recording (click again to start a new recording);
2. When playing a recording: double-click the recording button to delete the currently playing
recording file, and long-press the recording button to switch between sequential play/single
cycle (the indicator light is always on in purple during single cycle).
LINE 1 LINE 2 LINE 1 & LINE 2 LINE 3
Channel 2
Gain
Channel 3
Channel 3
Bass
Channel 3
Reverb
Channel 2
Channel 1/2
Reverb
Channel 3
Gain
Channel 3
Treble Master Vol
Phone In
How to turn on Bluetooth Function and connect with your devices?
1. Turn on the amplifier.
2. Long press the MODE button and turn on Bluetooth MODE.
3. Turn on the Bluetooth function of your device and choose the device with the name of coolmusic
(Support recording software such as Douyin, Kugou, Kuaishou, National K Song, Sing Bar, etc.)
Channel 1
Channel 1
Gain
Battery Status: Blue light indicates battery is fully charged, and red light indicates low
battery, requires charging.Charging Indicator: When the purple light is flashing, is charging,
and when it's fully charged the lights stay steady purple.
POWER:power control,the associated power indicator
D.I out:listen port
Phones:headset output
18V DC input:Connect the output of adapter
9V DC output:The 9 v voltage supply to other equipment
BP40
40
40
CAUTION AVIS
18V DC
input
9V DC
output
POWER D.I Phones
Built-in MP3, Bluetooth and Record
Light weight and small size
Amazing sound and great look
Pretty versatile and capable
Schematic diagram of interface