Which headphone models have a driver-matched DB of 0.1 and a US MSRP of $49?
create table table_1601027_1 (headphone_model varchar, driver_matched_db varchar, us_msrp varchar, PRIMARY KEY (headphone_model))
select headphone_model from table_1601027_1 where driver_matched_db = "0.1" and us_msrp = "$49"