Late, very late, Revox introduced a cassette recorder. The quality was not enough for Willi Studer before to deal with the music cassettes as a medium. Revox did not come onto the market until 1981 with the B710.
If Revox, then right! 4 motor drive, two of which are directly driven, quartz-synchronized capstan motors for exact synchronization. The cartridges are treated like a raw egg thanks to the sophisticated electronics and monitoring of the drive functions. The smallest mistake and the tape deck stops immediately.
Unfortunately, this also makes the tape deck seem too nervous and many complain that the music cassette is playing on other decks! The music cassette (MC), compact cassette (CC) or audio cassette was introduced as early as 1963. What a vintage :-)