https://faroutmagazine.co.uk/the-secret ... r-mcguinn/“The engineer, Ray Gerhardt, would run compressors on everything to protect his precious equipment from loud rock and roll,” McGuinn said. “He compressed the heck out of my 12-string, and it sounded so great we decided to use two tube compressors (likely Teletronix LA-2As) in series and then go directly into the board. That’s how I got my ‘jingle-jangle’ tone.
https://memory.loc.gov/master/mbrs/reco ... lifier.pdf
https://thehistoryofrecording.com/Manua ... manual.pdf
http://www.recproaudio.com/diy_pro_audi ... x_la2a.htm
The Teletronix LA-2A uses light dependent resistors
Experimenting with Photoresistors
Modern Electronics Sept 1988
https://www.diystompboxes.com/smfforum/ ... ic=18803.0
According to this article:
https://www.guitarworld.com/features/wh ... tar-heroes“We used to use Fairchild compressors and Pultec limiters,” McGuinn elaborated. “The technique was to run one compressor into another - piggyback them - just to get as much compression as possible to get as much sustain as possible. Because the Rickenbacker is a very short-sustain instrument. That’s good for rhythm, but it’s not good for lead.