Royer Labs R-DB22 dBooster2 Dual-Channel In-Line Signal Booster with DIs Provides Increased Headroom at Mic Pre, Doubles as Hi-Z Direct Box, +12 or +20 dB Gain in Mic Mode, +0 or +8 dB in Hi-Z Mode, Runs on 48V Phantom Power, Protects Ribbon Mics from...