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- "You've set up the Echo Chamber!"
- ―Jemma Simmons
The Echo Chamber uses holographic technology to reconstruct scenes, sift through data, and various other purposes.
Seeking to locate the place where Agent Phil Coulson was brought back to life, Jemma Simmons and Leo Fitz remotely accessed the archives from the Triskelion and sifted through the data in the Echo Chamber.
The Echo Chamber was used once again at the Playground after the mystery pertaining to the Words of Creation was solved. Coulson used it to display the two dimensional drawings in three dimensions, revealing the blueprints of a city. 
The Echo Chamber is constructed of four poles that project a 3-D image in space that can be manipulated by the user. Users can view files and videos. It can also convert 2-D video into a 3-D version.
In chronological order:
- Agents of S.H.I.E.L.D.
- Fitz-Simmons Armory Link