Complex sentence: Top disc jockeys in this era would play hundreds of vinyl records and cassette tapes, the equipment used was enormous, and they usually required roadies (similar to those who work for bands) to set up on their behalf.
Split into simpler sentences: Top disc jockeys in this era would play hundreds of vinyl records and cassette tapes. The equipment used was enormous and they usually required roadies (similar to those who work for bands) to set up on their behalf.