True to the Music
®
Radial Engineering Ltd.
EXTC-SA
1. POWER LED - Indicates when the unit is
powered on.
2. SEND LEVEL - Used to adjust the output
level going to the pedals and optimize signal-
to-noise for best performance.
3. RECEIVE LEVEL - Used to set the effects
loop return level and further optimize signal-
to-noise.
4. 180º POLARITY INVERT - Lets you adjust
the polarity of the wet signal path and bring it
into phase with the dry signal when they are
being mixed together.
5. BLEND - Lets you adjust the wet-dry mix
between the original unprocessed signal and
the EXTC-SA effects loops.
6. LOOPS ON/OFF - Turns the A & B loops on
and off. An LED indicator illuminates when a
loop is active.
1
2
3
9
4
10
12
5
11
6
7
8
1
FEATURE SET
7. BOOKEND DESIGN - Enclosure design
creates a protective zone around the front
controls.
8. POWER ADAPTER - Connection for the
included power supply with handy cable
clamp to prevent accidental disconnection.
9. ¼” SEND and RECV - Separate LOOP-A &
B send and receive jacks used to connect
guitar pedals to the EXTC-SA. LOOP-A is
transformer isolated to eliminate hum and
buzz caused by ground loops.
10. XLR I/O - Balanced line-level input and output
jacks for connection to profesional audio
devices.
11. ¼” TRS I/O - Balanced/unbalanced line-level
input and output phone jacks.
12. FULL BOTTOM PAD - Won’t scratch, keeps
the EXTC-SA in one place and provides
electrical isolation.
