EICO Model 1078 Variac (Variable Autotransformer) 7.5A Rated - For 117VAC Components

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Variable Autotransformers (Commonly known as Variacs) are great devices for protecting your prized pieces of vintage audio equipment from unnecessary stress due to elevated modern mains voltages.

This EICO model 1078 is a vintage piece hailing from the 1960's and still works today!

Back in the day, 117VAC mains were the standard. In modern times, voltages range from 120VAC to over 127VAC depending on time of day and your location in the country.

When feeding a vintage piece of equipment designed for 117VAC from a regular outlet in your home, the elevated mains can raise heater voltages for vacuum tubes as well as almost all power supply voltages. This causes unnecessary wear and tear on tubes and other electronic components.

Using a Variac to back the voltage down to acceptable design levels helps prolong the life of your vacuum tubes and may extend the routine maintenance interval.

This EICO unit is rated up to 7.5A which makes it suitible for use with most vintage tube and solid state power amplifiers.

The meters are not incredibly accurate and should be used for reference only. A digital multimeter on the AC setting should be used to verify acceptable voltage levels.