Did you set your gains with a DMM? If not, you probably clipped the shit out of it or a previous owner fucked it beyond help before you got it.
What is a DMM?*edit*
Here are the settings:
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1-1 Input : 2ch
1-2 Input Level :-4db
1-3 Gain Factor :0db (lowest it goes is 0db)
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2-1 LP On\Off :On
2-2 Frequency :63hz
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3-1 Subsonic On/Off :On
3-2 Frequency :25hz
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4-1 Parametric EQ On\Off :On
4-2 Frequency :50hz
4-3 Width Q. :3
4-4 Level :-2db
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5-1 Bass Compensation On\Off :Off
5-2 Mode :N\A
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6-1 Time Compensation On\Off :Off
6-2 Delay Time :N\A
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7-1 Phase :0\180
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8-1 Amp Set ID No. :1
8-2 Time Of Delay :1.0
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9-1 Output Disable :Off
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0-1 Memory Write
0-2 Memory Read
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