Hardwire System Bypass Buttons on both channels - allow the audio to pass even if the unit is unplugged, and are also useful for comparing the processed and unprocessed signals.

• 两个通道的直通按钮：如果把插头拨掉后，音频信号则毫无损失地通过，这样在比较处理和不处理信号时，是很有用的。