Nobsound HiFi Bluetooth Digital Power Amplifier Stereo Channel Audio Amplifier 50W x 4 5.0 2/4 (M4)

20W + 20W: 2.0 channels, capable of driving 4-16Ω speakers, compatible with most home and car speakers. CH3/CH4 are for audio output: The four groups of speaker sockets can be connected to two pairs of speakers. In addition to connecting to active speakers, CH3/CH4 can be connected to another M4 amplifier to connect more speakers. This allows you to connect multiple amplifiers and multiple speakers in sequence and share one audio signal across multiple rooms. CH3/CH4 are for audio inputs: one input corresponds to one output (for example, the CH1 speaker socket outputs the audio signal that CH1 inputs). This means you can input two groups of stereo audio signals (or four groups of mono audio signals) simultaneously. It supports stereo RCA and Bluetooth 5.0 inputs and is compatible with audio devices such as smartphones, computers, TVs, MP3 players, CD players, and more. With the U-disk input, it can be used as a digital music player. It supports MP3, WAV, APE, FLAC, and WMA lossless formats. The speaker socket output has four groups, which can output simultaneously, and each channel has an independent volume control. Its maximum output can reach 50W x 4 and it comes with a high-quality 24V/4.5A power supply, sufficient to drive most home speakers. Tags: Bluetooth amplifier, small record amplifier, Lepy amplifier, Bluetooth receiver, audio, portable amplifier, Nobsound power amplifier, preamplifier, audio power amplifier, small vacuum tube, headphone amplifier, AV amplifier, small Bluetooth receiver amplifier, Nobsound amplifier, powered speaker, Bluetooth speaker