411 REFERENCE · Wiktionary
DI unit
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Alternative forms
en DI shortening
Etymology
en DI stands for en direct input.
Noun
en music A unit that converts a high impedance signal to a low impedance signal to reduce interference, used to connect an instrument to a mixing console.
en DI box