What is "echoplex"

vb. (context computing intransitive English) To echo received text characters back to the computer that sent them.

The Echoplex is a tape delay effect, first made in 1959. Designed by Mike Battle, the Echoplex set a standard for the effect in the 1960s—it is still regarded as "the standard by which everything else is measured." It was used by some of the most notable guitar players of the era; original Echoplexes are highly sought after.

Echoplex is a live music venue located in the Echo Park neighborhood of Los Angeles, California. It is owned and operated by the same people as The Echo, and the two are considered sister venues. It is located and commonly described as being "below The Echo," leading some to erroneously believe that its official title is "Echoplex Below The Echo." Along with The Echo, Echoplex is affiliated with Spaceland in the Silver Lake neighborhood of Los Angeles. Some notable performers to have shows at Echoplex include The Mars Volta, Beck, NIN, The Rolling Stones and Thom Yorke.