BL20A Bluetooth 4.0 2.1 Digital Amplifier Subwoofer 50W+50W 100W HIFI Audio AMP for DIY

BL20A Bluetooth 4.0 2.1 Digital Amplifier Subwoofer 50W+50W 100W HIFI Audio AMP for DIY

Description:
CSR8630 4.0 HIFI bluetooth receiver chip. The transmission speed is high, low distortion. The tone is very delicate and natural. Amplifier sampling TPA3116 digital power amplifier

Support analog signal input and bluetooth signal input. Bluetooth input takes priority, turn on the Bluetooth signal, power amplifier output Bluetooth information, disconnect analog power, after the phone off the Bluetooth, automatically connect analog signal. Analog signal is the audio signal from the computer, CD, MP3.

3 knobs for amplifier , the right one is the total volume control, the middle one is the bass cannon volume control, the left one is the stereo volume control.

Any output power of amplifier in a relationship with the current and voltage of other power source. Generallr, 12V is adequate.  Power 19-24V for a greater output power, 4A and above current . if you only 12V or lower power supply available, but also want big power, can add a boost board to turn 12V to 24V  output .

Specification:
- TPA3116 amplifier
- Material of chassis: Aluminum alloy
- Full frequency: 50Wx2 + 100Wx1 subwoofer output power
- Support analog input and bluetooth input
- Power supply: DC12-25V

Note:
- No power supply or cable. Can use Laptop power supply. Outer dia is 5.5mm, inner dia. is 2.1, DC 12-24V
- The volume for phone should be more than 3/5 to get good SNR. Low phone volme will decrease the bluetooth SNR.
- Front panel switch is for cut off the output, not for power supply. So the light always lights.
- There is protective circuit.

Advantages:
- The left and right channels full frequency output. Under the rated voltage 24V, can drive 3-16Ohm audio.
- Ultra bass sound track under rated voltage 24V state can drive 2-16Ohm audio.  
- Heavy bass gain independent adjustment
 
Package included:  
- 1 x Digital Amplifier