Name the # tubes with audio amp of x
CREATE TABLE table_name_30 (_number_tubes VARCHAR, audio_amp VARCHAR)
SELECT _number_tubes FROM table_name_30 WHERE audio_amp = "x"
### Context: CREATE TABLE table_name_30 (_number_tubes VARCHAR, audio_amp VARCHAR) ### Question: Name the # tubes with audio amp of x ### Answer: SELECT _number_tubes FROM table_name_30 WHERE audio_amp = "x"