Hi
Nakamichi did shock the Hi-Fi world with the Nakamichi 1000, followed by the 700 but once the wave of shock passed, several brands came with viable alternatives: teac, Akai, Pioneer on the Japanese front but also Revox, Grunding, Uher and particularly Tandberg on the European front. There are others that I can't remember. Luxman also made some very good cassette decks, from I think, the Laboratory Reference Series
I remember a Tandberg model , an upright model and that particular model with metal tapes made copies that were difficult to distinguish from the original LP, the exact names and models escape me ..