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BUY TDA7448 https://www.utsource.net/itm/p/907891.html
6 CHANNEL VOLUME CONTROLLER
Description: The TDA7448 is a 4-channel BTL audio power amplifier IC from STMicroelectronics. Features: - Output power: 4 x 30W - Supply voltage: 8V to 18V - Low distortion - Thermal shutdown - Short circuit protection - Low quiescent current Applications: - Car audio systems - Home audio systems - Portable audio systems - Multimedia systems (For reference only)