The amplifier board uses two TPA3255 digital amplifier chips, with an output power of 150WX2+300W/4 ohms, left and right channels with tone circuits, and adjustable bass and treble The subwoofer output has low-pass frequency adjustment, the bass is very elastic, deep, and punches hard. The treble is bright and parent, and it goes straight to the The op amp can be replaced, and a more advanced op amp can be upgraded according to needs, with better sound quality Built-in QCC3084 Bluetooth module, Bluetooth 5.4, supports high-bitrate lossless mission, sampling rate supports 96k, and supports LDAC Plus PCM5102A decoding, making the Bluetooth playback effect comparable to a desktop CD player<br><br>Model: TPA32552.1 Bluetooth amplifier board Output channel: 2.1 channel Amplifier chip: TPA3255 * 2 Bluetooth chip: QCC3084 Decoding chip: PCM5102A Bluetooth version: 5.4 Bluetooth protocol: LDAC, , HD, AAC, , -LOSSLESS -ADAPTIVE Bluetooth parameters: 24BIT/96K Frequency response range: 20-20KHZ Power supply: DC24V-48V, the higher the voltage, the greater the power Output power: 150W * 2+300W/4Ω, measured at 48V Total harmonic distortion: 0.05% Applicable speakers: 50W-300W 4Ω 8Ω 16Ω Protection mechanism: power reverse protection, short circuit protection, self-recovery overheat protection (The product appearance and printed words depending on the batch, but this does not affect use) Color: As Shown Material: PCB<br><br>Package Contents: 1 * Amplifier Board<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.