overamped1
/ˌəʊvərˈam(p)t/adjective
Intoxicated with amphetamines; highly excited.
Origin
1970s; earliest use found in The Washington Post. From over- + amped.
overamped2
/ˌəʊvərˈam(p)t/adjective
Amplified too much; especially (of an electric musical instrument) overly loud, amplified to the point of distortion.
Origin
1980s; earliest use found in Back Stage. From over- + amped.