Excellent signal/noise ratio, lowest harmonic distortions and wide gain range make the QuadMic II a first choice for superior studio recordings. QuadMic II is battery powerable and thus excellent for remote applications. Each of the 4 channels features balanced microphone and line inputs with Neutrik XLR/TRS combo jacks, switchable 48 V phantom power, phase reversal and a low cut filter. All channels are also equipped with LEDs for signal presence, clip state, and activated phantom power. The input amplification can be set from 6 to 60 dB. The balanced line level output signals are provided on the rear of the unit as four 6.3 mm (1/4") TRS jacks. A maximum balanced and unbalanced output level of +21 dBu makes the QuadMic II fully compatible to RME's converters and interface series having analog inputs. The QuadMic II complements any RME system with line inputs by adding external microphone inputs. Since the unit runs on supply voltages from 9 to 18 V DC, it can operate on virtually any power source available, including batteries and rechargeable batteries.