Unit 12 pure moving iron, upper seat of concert hall, ancient wind current 2 static electricity 6 moving iron, potential player with relatively high requirements for front end, good front end can produce good sound of 10000 yuan Flagship of instrumental music OK, ceiling performer of classical instruments Lou's dtec-30265 * 2 Lou's swfk-31736 * 2 Shengyang 33aj007i / 9 * 2 All are composite units, so there are 12 on one side Middle end magic machine (resin)