How many headphone classes have a US MSRP of $150?
CREATE TABLE table_1601027_1 (headphone_class VARCHAR, us_msrp VARCHAR)
SELECT COUNT(headphone_class) FROM table_1601027_1 WHERE us_msrp = "$150"
### Context: CREATE TABLE table_1601027_1 (headphone_class VARCHAR, us_msrp VARCHAR) ### Question: How many headphone classes have a US MSRP of $150? ### Answer: SELECT COUNT(headphone_class) FROM table_1601027_1 WHERE us_msrp = "$150"