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Feature:There are seven removable stainless steel springs to support the upper and lower "sandwich" bearing plates to efficiently reduce vibrationThe sound is full and thick and warm, improving the cold and hard, tight, and lacking flavor system. It can increase the mid-low frequency energy while ma..

Feature:There are seven removable stainless steel springs to support the upper and lower "sandwich" bearing plates to efficiently reduce vibrationThe sound is full and thick and warm, improving the cold and hard, tight, and lacking flavor system. It can increase the mid-low frequency energy while ma..