1/MONO 9VDC
USB
2/STEREO 2/STEREO
PAIR
IN
1/MONO
DECAY PREDELAY MIX
BASS TREBLE MOD
SPRING 65
PLATE 140
HALL 224
A
B
C
ON PRESET
STORE
Free Chamber & Plate 224 effect, UAFX Control app,
and complete documentation: uaudio.com/uafx/start
Power Supply
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Isolated 9VDC, center-negative, 400 mA minimum,
2.1x5.5 mm barrel connector (sold separately)
MONO OUT
Connect TS cable to amp or
other gear for mono operation
PAIR
Press to activate Bluetooth
discovery
STEREO OUT
Connect TS cable for stereo only
(in addition to MONO output)
9VDC POWER IN
Connect 400 mA isolated power
supply (sold separately)
MONO IN
Connect TS cable from guitar or
other gear for mono operation
USB TYPE-C
Connect to computer for firmware
updates with UAFX Control app
STEREO IN
Connect TS cable for stereo only
(in addition to MONO input)
STORE
Hold down to save sound as preset
PRESET LED
Lit when stored
settings active
MOD
Modulation amount and/or rate
Spring 65
Wow & Flutter
Plate 140
Rate & Depth
Hall 224, Chamber & Plate 224
Chorus
A / B / C
Variations within active effect
Spring 65
Bright / Smooth / Ambient
Plate 140
Three different plates
Hall 224
Room / Small Hall / Large Hall
Chamber & Plate 224
Perc Plate / Const Plate /
Ac Chamber
MIX
Reverb level – 100% wet at max
PREDELAY
Time before reverb onset
PRESET SWITCH
Toggle eff e c t o n / o ff
with stored settings
ON LED
Lit when knob
settings active
BASS
Spring 65, Plate 140
Low frequency response
Hall 224, Chamber & Plate 224
Low frequency decay
TREBLE
Spring 65, Plate 140
High frequency response
Hall 224, Chamber & Plate 224
High frequency decay
EFFECT
Cycles through reverb types
DECAY
Reverb time
ON SWITCH
Toggle eff e c t o n / o ff
with knob settings
