Power up the amplifier board, use your phone or PC to search for a new Bluetooth device, the module will appear as "TSA9840B", you can simply pair it up without PIN. Yes, it connects automatically with your device. You can then play your audio.
TSA9840B can auto-detect the Aux in/Line in Audio input. Bluetooth Audio source has higher priority. When Bluetooth audio is paused or Bluetooth is disconnected, the Amplifier will automatically output the Aux in/Line in audio.
TSA9840B + TSA1000, Both Aux in and Bluetooth audio volume can be controlled through BVC port
Specification:
Features:

- TSA9840B can auto-detect the Aux in/Line in Audio input. Bluetooth Audio source has higher priority. When Bluetooth audio is paused or Bluetooth is disconnected, the amplifier will output the Aux in/Line in audio.
- TWS mode supported. Users can stream audio to 2 pair amplifier boards at the same time wirelessly.
- There is an extra LINE OUT audio output jack. It can also be connected with a subwoofer amplifier board.
- BVC Port: BVC port can be connected with our Audio volume controller to control the Bluetooth audio volume.
TSA9840B can auto-detect the Aux in/Line in Audio input. Bluetooth Audio source has higher priority. When Bluetooth audio is paused or Bluetooth is disconnected, the Amplifier will automatically output the Aux in/Line in audio.
TSA9840B + TSA1000, Both Aux in and Bluetooth audio volume can be controlled through BVC port
Specification:
The following table lists all the typical data of the Amp board. For full specification, please refer to the datasheet of MAX98400A chip.TA = 25℃, fin = 1 kHz sine wave, RL = ∞, VVS = 18V(Unless otherwise stated)
|
Parameter |
Condition |
Min |
Typ |
Max |
|
Supply Voltage (VDC) |
Inferred from PSRR test |
10 |
- | 24 |
| Current Limit | 3.5A | 5A | - | |
| Bandwidth @ ±3dB | @8Ω | 20Hz | - | 22KHz |
| Efficiency | PO = 2X20W, MAX98400A, PVDD = 12V ,RL = 8Ω | - | 90% | - |
| Minimum Load Impedance | 8Ω | |||
| Switching Frequency | 265KHZ | 330KHZ | 295KHZ | |
| Gain | 9dB | 20.1dB | 29.8dB | |
| Input Sensitivity(RMS) | - | - | 620mV | - |
| Input Impedance | - | - | 22KΩ | - |
| Output Power | Stereo,RL = 8Ω,THD+N 10% | - | 22W | - |
| Mono, RL = 4Ω,THD+N 10% | - | 44W | - | |
| THD+N | POUT=0.1W to POUT/2, fIN= 20Hz to 20kHz, RL= 8Ω | - | 0.3% | - |
| POUT/2, fIN=1kHz, RL= 8Ω | - | 0.03% | - |
- Size: 9.1cm x 5.0cm
- Bluetooth 4.2
- aptX, aptX Low Latency, SBC and AAC
- TWS supported
- Bluetooth audio volume control port (BVC)
- Working voltage: DC 10V-24V
- Thermal and output current protection
- Personal computer
- Background music system
- Musical instrument amplifiers
- Home DIY
- Car audio






