Noise filters

I have a question about car audio amps . . . I got a free amp from my buddy & he removed what he calls noise filter's from the left channel of the amp because they were bad. There are 3 out of 4 missing. What do they do & where can I purchase new ones? He said the amp should still work, it does but not powerful at all & it suppossed to be 350watt x 1 channel bridged. My lower powered amp hits harder.

I have a question about car audio amps . . . I got a free amp from my buddy & he removed what he calls noise filter's from the left channel of the amp because they were bad. There are 3 out of 4 missing. What do they do & where can I purchase new ones? He said the amp should still work, it does but not powerful at all & it suppossed to be 350watt x 1 channel bridged. My lower powered amp hits harder.
Noise filters, hmm... I don't think there is such a thing, could be wrong
Probably just a POS amp

He showed me the things he pulled out. They are resistor looking things, blue in color. I would post a picture but I dont really feel like taking the damn thing apart again.

Pioneer GM-X962 is the model

Here is a picture since no one has been able to answer.

Ask Gsteg, I have no idea.

they are resistors .... if you can make the picture clearer, I can tell you what value ... or better yet, tell me what the color bands are - and I will tell you the values

Thanks but too late I gave it back to the guy I got it from. We also fired him today due to 5 comebacks in 3 days :headshake He is fuckin' butch. Left 5 bolts out of a car he did a clutch on, mainly the damn trans mount bolt so the whole engine/trans was bouncin' around :headshake