Tascam MM-20 input modules

There are still quite a few of these units about they had 6 input channels in banks

of 2 , 4 were for line inputs but two were for microphones with quiet nice sounding audio transformers, the unit was modular so if you wanted swop a unit you could do easily .

Though if you want to add the Microphone unit you would need mount two more Mike sockets at the rear.

The transformers alone sell for the same money now