Rare Rare Rare...... Real Vintage Helios Modules, mounted and wired in a crude but effective steel box. Has appropriate external power supply. These modules have a 3 band Swept Equalizer, plus Hi and Low Filters. Mic Preamp Input or Line Input/Equalizer .I have not seen this particular color of Helios modules before, and I do not know which console they came from. Basically, these modules are unobtainium...they made about 125 consoles; some are still in service, and some have been parted out or thrown away. These Helios modules are Far more rare than a Neve 1073. They are quite lovely. We have two pairs. This listing is for ONE PAIR, as pictured, with power supply. The price is firm. Feel free to call dan alexander audio with any questions.