Complex sentence: Over the next few years, Alesis introduced many new products and enjoyed great success, but the industry was unaware of what was being developed back in the R&D area of Alesis, something that would revolutionize digital recording.
Split into simpler sentences: Over the next few years, Alesis introduced many new products and enjoyed great success. But the industry was unaware of what was being developed back in the R&D area of Alesis, something that would revolutionize digital recording.