
First introduced in the late 1950s, Quad's electrostatic speakers have evolved into "the finest ESLs yet" with significant internal and external changes.
Quad's ESL speakers have been delighting audiophiles since the very birth of rock and roll: founder Peter Walker made the very first Quad ESL in 1957. They've aged exceptionally well, requiring only very occasional refreshes: in 1981, in 1989, in 1999, in 2006 and in 2012. And now they've reached their sixth generation in the form of the ESL 2812X and the ESL 2912X.