B-Stock, Rupert Neve Designs Portico 5015, microphone preamplifier (+48V) with compressor, independent transformer-coupled mic preamp and compressor-limiter sections identical to those found in the 5012 and 5043 modules, switchable Phase Invert, HPF, Mute, FF/FB, Silk, Input Impdance 10 kOhm, Connections: Mic-/ Comp Input, Line-/ Comp Output, Link and Buss, B-Stock with full warranty, may have slight traces of use