Denon UD-M31 Operating Instructions Manual page 7

(2) Connecting to MD recorder (DMD-M31), Cassette deck (DRR-M31) and CD recorder etc.
(Refer to page 12 "Setting up the input/output functions".)
MD recorder (DMD-M31) (option)
IN
OUT
CD receiver (UD-M31)
Power plug
AC 230 V 50 Hz
(Plug into a power outlet)
Power plug
(for U.K. model)
CD recorder etc.
R L
LINE
OUT IN-2 IN-1
Cassette deck (DRR-M31)
ENGLISH
(option)
7