Acid techno is a subgenre of electronic dance music that emerged in the late 1980s. It is characterized by its use of the Roland TB-303 bass synthesizer, which produces a distinctive squelchy sound. The genre combines elements of techno and acid house, often featuring repetitive beats and hypnotic melodies that create an immersive experience for listeners and dancers alike. The genre gained popularity in underground clubs and raves, particularly in Europe. Acid techno tracks typically have a fast tempo, usually ranging from 130 to 150 beats per minute. Artists like Hardfloor and Josh Wink are well-known for their contributions to the genre, helping to shape its sound and influence future electronic music styles.