The Revox A77 is an analog multitrack tape recorder. Users deploy it to replay and digitise vintage tape — especially 1980s band mixes. It is robust and simple to operate, more so than the B77 or G36. But it trades mechanical precision and low-noise playback for that durability. It does not record multitrack. It does not edit. It plays — and keeps playing.
The Revox B77 is an analog multitrack tape recorder built for studio and project recording. It supports 3 3/4, 7 1/2, and 15 ips tape speeds—but the 15 ips setting is obsolete for digital use. Units from 1980 remain fully functional. It is mechanically robust and quieter than UHER models. Its meter is breakable and irreplaceable. It offers no digital functionality. It is worth your time only if you need durable, low-noise analog multitrack operation—and can maintain it yourself.
The Revox PR99 is an analog multitrack recorder with no published technical specifications. Its function is limited to basic tape-based multitrack recording and playback — but without documented parameters, alignment, or service history, it resists reliable use or evaluation.