JL Chip AC6976D4, karaoke microphone transmitter and receiver Bluetooth chip equipped with 32-bit CPU, supports AAC, SBC codec, processor running frequency up to 160MHz, supports noise suppression and echo cancellation, supports multi-band equalizer, supports single/dual microphone noise reduction, supports two-way analog microphone amplification, built-in microphone bias, built-in two-way touch function. Support: MP2, MP3, WMA, APE, FLAC, AAC, MP4, M4A, WAV, AIF, AIFC, compatible with V5.1+BR+EDR+BLE, 20-band sound effects adjustable, QFN32 (4mm*4mm) compression package.