unplugged

Short definition from Wiktionary

Adjective

1. 1
   Not plugged in.
2. 2
   Using acoustic instruments, especially instead of electric ones.
3. 3
   Without a plug or bung.
4. 4
   Presented in a more low-key and intimate context than usual.

Verb

1. 1
   simple past and past participle of unplug