The Black Lion Audio B173 Quad is a 4-channel microphone and line pre-amp - a larger version of the popular single-channel model. More than just another 1073 clone, the B173 Quad combines vintage-inspired sound with modern features in a rugged 2U chassis. The redesigned amplification stage and lower noise level provide cleaner sound with less distortion, while CineMag input and output transformers keep signals warm and punchy. 2x DIs on the front give Guitars, Basses and Synthesizers harmonic richness, while stepwise input gain and variable output attenuation provide precise control over transformer saturation. The metering per channel indicates how hot your output signal hits the parallel TRS/XLR outputs, while an external power supply keeps noise away from your tracks.