Mackie MDB-1P Passive DI Box

Behringer Ultra-DI DI400P Passive Direct Injection Box

Nowsonic Switcher 2-Channel Passive Volume Controller Big Knob XLR & 1/4" TRS

Alctron DB-1 Passive Direct box DI box guitar Ground Loop

Mackie HM-4 4-Channel Headphone Amplifier

SWITCHCRAFT 314DI Passive Pro Direct Box

Chord Passive DI Box DI-P1 Pro Sound Audio Guitar Keyboard Direct Injection

Pyle PDC22 passive DI box audio hum eliminator 1/4" XLR converter dual direct