Abbreviation for Left Total and Right Total. The content of two channels marked this way contains a signal to be decoded by a Dolby Prologic decoder or similar. LtRt is the transportation format that unfolds to four (Center, Left, Right and Surround) or more channels when decoded.
Lavalier
Headset & Earset
Handheld
Instrument
Pencil
Shotgun
Gooseneck
Immersive
Kits