Plastic frame, the frame is smooth surface, can be gold, silver, black, gray, titanium five colors, trademark can be luminous and screen printing two trademarks, the base standard is plastic base, if you are afraid of plastic base will be broken, poor quality and other problems, it doesn't matter, aluminum base can eliminate the concerns of plastic base; if you have requirements for bass part, then upgrade to s horn can meet the requirements Your demand for bass effect will be 3-5 times better than that of ordinary speakers. If you have requirements for both high and low bass, upgrading to L-type speakers can meet your two needs at one time. L-type speakers will be 5 times better than ordinary speakers