These Furutech FT-903 (G) pure copper base plates are ground machined and 24K gold plated, offering a record conductivity level and flawless signal transmission.

The vast majority of audio connectors are made from brass or bronze / phosphorus alloy with a typical conductivity below 28% IACS (International Annealed Copper Standard). For comparison, the high purity copper (OFC) used in most interconnection cables has a conductivity rate of 100% IACS.

Due to the use of these "low" conductivity alloys, the majority of RCA subbases, even costly, tend to decrease the performance of the cables to which they connect.

These FT-903 (G) subbases are the result of meticulous engineering by Furutech, and special attention to the materials and components used.