... with USB/SD/MMC slot Car Speaker, Speaker,car audio speakers, mini speaker, portable speaker, horn speaker, amplifier speaker, subwoofer speaker Model numberY ... 0Z*240 0ZPower Handing400W500WImpedance8 Ohm8 OhmSensitivity89dB±289dB±2Frequency Response35-2.5KHz35-2.5KHzDimensions828*365*(280+360)mm828*365*(285+365)mm ... no best only better, so our products are more competitive. Hi Fi car speaker