The Singing Machine SML271 Instruction Manual page 7

Connection
Connecting to AC Power
Connecting to Line In Jack
To External Unit
AUDIO OUTPUT
/ HEADPHONE JACK
Connecting to Line Out Jack
To External audio device
Insert the AC power cord into a
conveniently located AC outlet having
120V AC, 60Hz.
Note:
Make all connections before connecting to
AC power.
Connect an external device by using an
appropriate cable (3.5mm audio cable not
included) as shown.
Note: See page E21 to select and use the
Line In function.
AUDIO OUTPUT
— E6 —
This unit can be connected to another
audio system for greater audio output via
3.5mm AUX cord (not included).
Plug one end of AUX cord into the LINE
OUT jack located on the back of the
machine.
Plug the other end of the AUX cord into the
Line In jack on your separate audio device.
You may need to refer the instructions
of your separate audio device for more
details.