Can you install an amp without RCA jacks?

Related questions

1. Is a subwoofer cable just an RCA cable?
2. Does my TV have audio out?
3. What is RCA cable for subwoofer?
4. Are all RCA cables the same?
5. Can you convert RCA cable to HDMI?
6. How do I connect my RCA audio cable to my TV?
7. Does a 4 channel amp make a difference?
8. Does an amp improve sound quality?
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10. Can you convert Coax to RCA?

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18. #cannot