The TinySine TSA7500B is a Class D 2.1 amplifier module, incorporating a TPA3221 amplifier chip, capable of delivering a consistent power of 2x100W + 200W. It can be combined with speakers in 4Ω or 8Ω, whether they are low-energy bookcase speakers or models requiring a higher power input.

The TSA7500B also includes a Bluetooth 4.2 AudioB Plus module that supports aptX and provides very high throughput and transmission stability. All you need to do is pair a smartphone or tablet with it, for example, to stream your music.

The amplifier can also be connected to a brand's external volume controller, such as the TSA1000, TSA1010 and TSA1020 models, or to a DSP to provide a tone control for the subwoofer. Finally, the module also works in TWS mode, which means that it is possible to pair two of them together to play music on the whole.

It is possible to connect a potentiometer to the module in order to control the volume of your Subwoofer independently of the overall volume.

The TSA7500B can automatically detect the Aux and Line inputs. The Bluetooth input has a higher priority. When no Bluetooth signal is received, the Bluetooth signal is disconnected. The amplifier then switches automatically to the Aux / Line outputs.

You can connect a TinySine TSA1000 module to the TSA7500B to provide an Aux input and volume control directly via Bluetooth. The TSA1000 module is connected to the BCV connector of the TSA7500B

Two TSA7500B modules can be operated in TWS mode.

• S1 : Press 3s to access pairing mode. Press 6s to reset the pairing information.
• S1+S2 : Press 1s to activate the slave TWS mode.
• S1+S3 : Press 1s to activate the TWS master mode.
• S2+S3 : Press 1s to disable TWS mode.