Gear · delay
EMT Sound Retardation System
Magnetic delay unit, 1968 onwards. Magnetic delay: an endless loop of coated foil on a rotating drum, with one record head and three playback heads giving fixed delays. Built for broadcast and studio use to delay a signal by fixed amounts, including as pre-delay ahead of a plate reverb.
Source, read 15 Nov 2026
Records it appears on · 1
- You're No Good
Linda Ronstadt · Heart Like a Wheel, 1974
- Guitars · Input chainReportedDelay unit with a warped disc that gave a warbling sound, heard on the first section of the lead break and the later arpeggios.
Sources for each use are on the record’s own page.
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First choice · Covers this kind of unit
Soundtoys EchoBoy
delay
A delay with tape-style modes, which record and replay the sound magnetically as the original did, wobble included; it is not a model of this unit.
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