There are also companies that specialise in restoring and digitising analog media. I had some Super 8 films done by https://mediafix.de/ https://mediafix.de/ [G

There are also companies that specialise in restoring and digitising analog media. I had some Super 8 films done by https://mediafix.de/ https://mediafix.de/ [German only] and the results were better than expected. They do tapes, but don’t say anything about how they can improve the sound