Altec 438c mic preamp & vari mu compressor. Heavily modified by the hands of Dr. Mikenstein. Added a hand made stepped output volume attenuator, line input (bypasses mic preamp), attack time control, line input volume pad, and a meter adjust control.
About the Author
Mike Congilosi II, Owner/Designer/Electronics Engineer at Lightning Boy Audio and Owner/Audio Engineer/Music Producer at LBA Studios.