I currently have a Teac 25-2 and a 35-2 that both have RCA outputs for the playback.
It would be interesting to put together a list of machines that have this feature to make it easy to hook up external preamplifiers. Unfortunately, the usual Technics 1500, 1506 and 1700’s don’t have it but there must be a number of other machines, likely semiprofessional ones that used this method.