18
U.40 4-Channel Line Mixer
U.420 4-Channel Line Mixer

1/4" TRS Phone Plugs and Jacks

“TRS” stands for Tip-Ring-Sleeve, the three connection
points available on a stereo 1/4
"
or balanced phone
jack or plug. TRS jacks and plugs are used for balanced
signals and stereo headphones:

Balanced Mono

SLEEVE
TIPSLEEVE
TIP
RING
RING
TIP
SLEEVERING
1/4
"
TRS Balanced Mono Wiring:
Sleeve = Shield
Tip = Hot (+)
Ring = Cold (–)

Stereo Headphones

SLEEVE
TIPSLEEVE
TIP
RING
RING
TIP
SLEEVERING
1/4
"
TRS Stereo Unbalanced Wiring:
Sleeve = Shield
Tip = Left
Ring = Right

1/4"

TS Phone Plugs and Jacks

“TS” stands for Tip-Sleeve, the two connection points
available on a mono 1/4
"
phone jack or plug. They are
used for unbalanced signals.
SLEEVE
TIP
TIPSLEEVE
TIP
SLEEVE
1/4
"
TS Unbalanced Wiring:
Sleeve = Shield
Tip = Hot (+)
Appendix B: Connections

RCA Plugs and Jacks

RCA-type plugs (also known as phono plugs) and jacks
are often used in home stereo and video equipment and
in many other applications. They are unbalanced and
electrically equivalent to a 1/4
"
TS phone plug.
TI
P
SLEEVE
TIPSLEEVE
RCA Unbalanced Wiring:
Sleeve = Shield
Tip = Hot (+)
8.6 in/
218 mm
8.8 in/
224 mm
3.4 in/
87 mm
WEIGHT
2.5 lb
1.13 kg

Dimensions