Two years later, TI fixed those issues with the TI-99/4A (note the “A”)—seen here—which retailed for $525 (about $1,368 today when adjusted for inflation). That was pretty cheap at a time ...

His case study for the video below is a tape from a TI-99/4A that won’t load. A quick look in Audacity at the audio waveform seems to show the problem — an area of severely attenuated signal.