Detailed Instructions: In this task, you're given a sentence and your task is to generate a simplified sentence that focuses on lexical paraphrasing from the original sentence given in the input.
Q: tube sound -lrb- or valve sound -rrb- is the characteristic sound associated with a vacuum tube-based audio amplifier.
A:
tube sound -lrb- or valve sound -rrb- is the sound that comes from a vacuum tube-based audio amplifier.