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U.40 4-Channel Line Mixer
U.420 4-Channel Line Mixer
Block Diagram
L
R
Main
L
R
Main
Main Out
level
Level
Aux Out L
L
R
Aux L
Main Out L
Phones
level
NOTE: Switches are shown in the default (out) position.
Channels 2-3
L
R
3-Band EQ
Gain
Gain
LO
HI
MID
LO
HIMID
Main Out R
Aux Out R
Phones
Channel 4
Aux R
Aux
Level
L
R
3-Band EQ
Gain
LO
HIMID
LO
HI
MID
Aux
L
Phono
R
Level
Channel 1
L
R
3-Band EQ
LO
HI–Z
HIMID
LO
HIMID
Aux
HI-Z
Normal
FireWire In
from Computer
Firewire
In Level
Firewire
Sum
Level Set
Aux L
Aux R
Level Set
RIAA preamp
Ch.1-4 to FW output
FireWire input and Ch.1-4 to FW output
L
R
Main Mix
Sum
Channel
Aux
Sum
Sum
L
R
L
R
FireWire Out
to Computer
Main Out
Level
Level Set
DAC
ADC
L
R