CREATE TABLE table_1601027_1 (headphone_model VARCHAR(255), driver_matched_db VARCHAR(255), us_msrp VARCHAR(255))
Which headphone models have a driver-matched DB of 0.1 and a US MSRP of $49?
    
SQL: SELECT headphone_model FROM table_1601027_1 WHERE driver_matched_db = "0.1" AND us_msrp = "$49"