Frippertronics – is the name given by Robert Fripp to his analog delay (looping) system consisting of two side-by-side reel-to-reel tape recorders.
Later on in the 1990’s when Fripp switched over to more complex delay system he started to call it Soundscaping.
Strictly speaking Frippertronics, Phrase-Sampler and Looper are synonyms. They all use one and the same principle based on Delay effect, though there are some differences between them. I point this specific differences out in an article about Loopers.
I personally prefer to think of Frippertronics as a looper with Decay parameter set to fade out, because this is what was extremely interesting and characteristic of Fripp’s performances – possibility to successively fade out previous loops while new loops were recorded over and over again.