A match made in heaven. This is John's legendary, career-changing Echoplex Echo Chamber unit. Designed by Mike Battle and first sold c 1959, John started using one c mid 1960s and its incredible usage can be heard on John's recordings and live shows - notably on Solid Air's 'Rather Be The Devil'. John's model here (serial 6929) includes foot pedal, case with original instruction sheet and separate case containing some of the gear John would use to create his effects - a Shure prologue mic, DI boxes, an Ernie Ball pedal, a pop-shield, Danelectro Fab Tone.

From 'Guitarist' magazine 2008

"Martyn first experimented with the effect in the mid-1960s. Invented by Mike Battle and first sold in 1959. the Maestro Echoplex was a tape-based analogue delay which worked by sending a tape in a loop over recording and playback heads -users choosing two points along the tape. via a sliding head. to set the ‘delay time: This led to slapback sounds, longer repeated delays. and sounds merging with sounds in endless cloned loops. Martyn used the effect until the beautiful orchestration of it on Small Hours – the final track on 1977’s One World – signalled the end of its vinyl outings for Martyn."