The Circuit is specifically designed to provide sufficient amplification to match your cartridge with the rest of your system. Each unit is hand built “Made in the USA”. 50 hour factory burn in on all circuits and vacuum tubes. A low Noise level of -75 dBu below maximum output allows the quietest passages of you music to be heard. The output circuit is designed to drivconnectors plus the Ground On/Off switch will allow you to choose the best ground configuration. Recessed RCA connectors are durable and will hold up to the typical Audiophile who loves to change their configuration. All switches and knobs are easily accessible, nothing hidden inside to adjust. Two position MM switch 47K and 15K Ohms to accommodate more cartridges. 10 position MC load switch from 20 to 1000 Ohms and more in the sweet spot above 200. Accommodates both high and low MC output cartridges Elegantly designed 16 gauge steel enclosure to help isolate the electronic “chatter” from nearby equipment. On/Off power switch conveniently mounted on front side panel Easy to read large type on back panel.