how much louder you could go before the sound starts to break up, distort, or compress audibly
"Headroom", properly, means how much more clean volume you have until clipping sets in.
看懂了?我就是google复制过来这么了 ? 和我说哪点不一样让你在这BB?每个有HEADROOM你都可以进去装B 上去就别人不懂你自己懂什么叫HEADROOM 你妈的HEADROOM最大 能塞几个人