The product is designed with two Texas Instruments tpa3255 power amplifier chips, with ultra-low distortion and high-definition sound quality.

2.Dial wheel button to switch songs and modes.

3.Multiple audio input modes, BT + AUX + USB flash disk + USB sound card.

4.The power input terminal shall be clearly distinguished from the speaker wiring terminal to prevent the speaker from being connected to the power terminal and burning the speaker.

5.Mechanical volume knob, turn the knob to switch the machine on and off, no need to press and wait to see the indicator light. True stepless tuning.

6.Six low-noise preamplifiers 5532, with large gain and improved sound quality and volume.

7.The tin spraying design of wiring opening window and the tin spraying design of wiring opening window on the back of bare board increase the output power.

8.Support Wuzhi Audio APP, APP comes with situational music, support to modify BT name, set BT password, prompt tone, volume adjustment / switch prompt tone, Lullaby + timed shutdown, sound effect adjustment, support to customize 10 sound effects, which can be adjusted arbitrarily.USB flash disk, music selection, playlist.

CA-AS21

220W*2+350W 2.1 Channel

TPA3255 Bluetooth Digital Power Amplifier Board Module

High and Low Tone Subwoofer Audio APP