SELECT earpads FROM table_name_43 WHERE construction = "plastic" AND sensitivity__db_ = "unknown" AND succeeded_by = "sr325"
Apa saja earpad headphone dengan konstruksi plastik, sensitivitas yang tidak diketahui, dan digantikan oleh SR325?
CREATE TABLE table_name_43 (earpads VARCHAR, succeeded_by VARCHAR, construction VARCHAR, sensitivity__db_ VARCHAR)