ステレオの音が大きすぎますよ。

stereo

indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question

sound; noise; report; note; fame; Chinese-derived character reading

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

big; large; great; loud

indicates certainty, emphasis, contempt, request, etc.; used when calling out to someone; used to catch one's breath or get someone's attention; yo!