Vishay VSRs.
Similar to the S104.
the biggest improvement are the shunt resistors (47K, 100K etc) where they are loading the output of one of the stages.
http://www.datasheetcatalog.org/datasheet/vishay/vsr.pdf
Also keep in mind they will let through what ever is in the signal path, so if you are using in SS gear, you likely will need to add bypass caps to the power supply if not already there.
Similar to the S104.
the biggest improvement are the shunt resistors (47K, 100K etc) where they are loading the output of one of the stages.
http://www.datasheetcatalog.org/datasheet/vishay/vsr.pdf
Also keep in mind they will let through what ever is in the signal path, so if you are using in SS gear, you likely will need to add bypass caps to the power supply if not already there.