dbx 118 Compressor/Expander (Compander)
Links to dbx 118-related forum threads and web sites:

Troubleshooting a dbx 118 (includes downloadable schematic for main board)
http://www.gearslutz.com/board/geekslutz-forum/409263-troubleshooting-dbx-118-a.html
Accessed 9 April 2013

118 modifications including wonderful advice about op-amps and capacitors:
http://www.gearslutz.com/board/geekslutz-forum/131967-dbx-118-modification-little-help.html
Accessed 9 April 2013

118 mods esp. op-amps:
http://www.gearslutz.com/board/geekslutz-forum/99938-dbx-118-mod.html
Accessed 9 April 2013

A 118-specific web page from Switzerland, with photos, schematics, and graphs:
http://www.untrue.ch/test/dbx118/DBX118.html
Accessed 9 April 2013

Information related to swapping op-amps—not 118 specific:
http://nwavguy.blogspot.com/2011/08/op-amp-measurements.html
accessed 9 April 2013
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