Cassettes have terrible fidelity. Dolby attenuates some of the hiss but doesn't remove it, so it's always there in the background.
The original Type I tapes have the same frequency response as an old person with hearing issues. Type II Chrome is a bit better, but the low end has a hump and rolls far short of 20Hz, and the top end is nowhere close to the ruler-flat response of a 44.1k WAV or FLAC.
You needed $$$$$$$equipment$$$$$$$ to get real hifi out of cassettes. The only brand that really solved the hifi problem was Nakamichi. The engineering on their high-end decks was legendary, but so was the price - the Dragon would be around $6500 in 2019 dollars.
But... the terrible fidelity makes the sound more interactive. I started listening on cassettes, and when I moved up to a more revealing mid-fi vinyl system I was surprised to find that sometimes I liked the music less.
With cassettes, I could interpolate and imagine details I wanted to be there. When I moved up to hearing the details that really were there, I didn't always enjoy them as much.