That chart a few posts ago left a bit out.


Been a while but sort of remember (very good about remembering WHAT but not WHEN) going from mono to stereo tape (reel-reel) around 1960. In mid-60s SOA was a V-15 type II cartridge that could reproduce the 30 cycle opening of 2001. For cars about 64 the 4 track cart came out then in 66 the 8 track. (Some had a rubber idler wheel that would melt, it would eat the tape, and you then had a 4 hour tear down and clean process).


Cassettes appeared about 1970 but lasted two decades until CDs in 1990. Today have about 500 albums on my phone.


And those are just for sound.


Think if we have a dig, can find in my garages recorders for nearly all of those formats. Some may work.