- Royer Labs dBooster2; 2-Channel signal booster and impedance buffer for ribbon and dynamic microphone; 48V phantom-powered; Gain: 12dB or 20dB switchable; Frequency Range: 20 Hz - 20 kHz; High input impedance; Low output impedance; Connections: XLR I/Os; Dimensions: 98.4 x 98.4 x 44.5 mm (WxDxH); weight: 289g EUR 394.00 - See more - Buy online