⭕ Wonderful pair of racked original vintage Neve 1073, pulled out of a 70s console. They sound amazing and have been professionally lunchbox racked. The power supply is realized at the state of the arts, no funny noises, hums ect. The powered lunchbox has been separately purchased in USA and works at the power rate of 110v/60hz. Because the power supply works perfectly, i decided not to change anything inside, then i used an external transformer from 220V to 110V. The front panel also includes a rotative fader on each channel for fine volume control and two suitchable jack inputs for instruments direct input. This intended feature was a project of the previous owner of the rack box that i bought separately but jacks and switches have never been connected for the purpose. Anyway, an expert technician can easily add this option checking the schematic on the web. The jack input, controlled by the switch, must be connected between the first pramp stage and the second one. All the stage connections are present on the connection dock so it would be not take too long to obtain a pair of all uses monster preamps. The back panel features balanced Mic and Line inputs and outputs, as well as two separate switches for 48v phantom power. Those switches have a safety locking system in order to avoid to accidentally damage some not condenser mics, such as delicate ribbon models. The EQ section works great exactly as it should do. Highs are amazingly transparent and i recond the units dont need a recapping job at the moment.