Affection for obsolete music technology?
Mine's a portable MiniDisc recorder (Sony MZ-R700) that I managed to repair this morning & now working as new. I can think of several other candidates:
CD (I'm cheating here but feel they will be!)
8 track cartridge
Open reel tape
78s & varients
MP3 (I'm hoping!)
I exclude vinyl because I think it will outlast nearly every other format. Valves are thriving but are an electronic component so are a different topic though related.
As for my MD recorder, it cost me about £200 & has an optical input that I connected to a pioneer DVD player to record CDs from. A friend was busy putting their entire LP collection onto MD before I bought my portable. I did have doubts at the time regarding longevity but bought one anyway. MP3 was probably the death of MD. Philips' DCC launched slightly earlier & was doomed from the start, IMO.