Apple Final Cut Pro 7 - Manual (Page 122)

122 Chapter 6 Working with Audio
Change a clip’s audio level using the Audio Mixer:
Drag the A1 or A2 fader slider up or down in the Audio Mixer to change the clip’s audio
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level. Play the clip to hear the differences as you change the audio level. Both faders
work together because the stereo clip items are linked. Press the J and L keys to play
the audio backward and forward, and press K to stop playback.
A1 and A2 fader sliders