Description
Compact TPA3255 Class-D stereo amplifier for passive speakers, with stereo RCA and Bluetooth 5.0 inputs, bass and treble controls, and a 3.5 mm line-level pre-out for active speakers or a powered subwoofer. Bluetooth codecs are SBC and AAC. It accepts 24-48 V DC; power-supply options include 32 V/5 A and 48 V/5 A. Fosi advertises a maximum output of 300 W per channel into 4 ohms. This is not a verified continuous RMS rating, so the speaker-output wattage fields are left blank. Supported speaker impedance is 2-8 ohms. Published limits are THD+N at most 0.005%, SNR at least 108 dB, and frequency response 20 Hz-20 kHz within +/-1.2 dB.
Specifications
| Inputs | 1 × RCA analog line 1 × Bluetooth audio |
|---|---|
| Outputs | 2 × Speaker output 1 × RCA line output |
| Supply type | DC |
| Voltage range | 24 V–48 V |
| Amplifier class | Class D |
| Frequency response | 20 Hz–20 kHz |
| THD+N | 0.01 % |
| Signal-to-noise ratio | 108 dB |