noun or participle which takes 'suru'
amplify
Borrowed from English; used in technical or music contexts for increasing signal strength or volume. Often used as a suru-verb.
ギターの音をアンプリファイする。
Amplify the guitar sound.
この装置は信号をアンプリファイします。
This device amplifies the signal.
増幅 is the native Japanese term for amplification, used in both technical and general contexts. アンプリファイ is a more specialized loanword, often found in audio or electronics.
Loanword from English 'amplify', adopted into Japanese primarily in technical and musical domains.