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Tonebo n e Sm a r t S hee t SWI T CHB O N E A B-Y A M P S W I TCH E R
Combining two amplifi ers is now easy and fi nally HUM-FREE! The Switchbone is an
AB-Y box that has been developed to solve the many problems associated with driving two
guitar amplifi ers without introducing noise, hum or coloration.
The Switchbone is in fact, a distribution amplifi er that has been optimized for guitars to
transfer the natural tone and feel of the instrument to the amplifi ers. Unlike passive AB-Y
boxes that introduce switch noise and divide the guitar signal in two, the Switchbone
employs noiseless opto-coupler switching and the same highly acclaimed, Class-A circuit
found in the Radial JD7 Injector with 100% discreet components (no op-amps). Our unique
Drag™ Control load correction circuitry lets you dial-in the perfect guitar-to-amp relationship
that is otherwise lost when buffering the signal to drive two amps.
To eliminate hum caused by ground loops, the output for amp-B is transformer-isolated.
Our unique Toggle Mode™ footswitch and LED system provides clear visual feedback of
amp selection without confusion or tap-dancing! To enhance performance, a power boost
circuit adds extra kick for solos. Vari-Boost™ may be set to GAIN for an overall level boost,
MID ONLY for a boost that cuts through the mix or both at once. Vari-Boost can also be set
to mute for silent tuning through the Switchbone’s tuner output.
Features
• 100% discreet, Class-A circuit for natural tone
• Noiseless opto-coupler amp switching
• Transformer-isolated to eliminate ground loops
• Drag™ Control corrects load on pickups
• Vari-Boost™ with extra gain and/or mid-power
• Buffered tuner output with mute capability
Applications
• Toggle between two amps or play both at once
• Creates new sounds by combining amps/effects
• Switches and splits guitar signal without noise
• Boosts and routes signals easily
Cool Stuff
• Retains the natural sound of the guitar
• Does not introduce noise, hum or buzz
• Super-intuitive LED indicators that work
• Tuner output is separate from audio path
Dimensions (W x D x H)
• 6.9” x 4.5” x 2” (175mm x 114mm x 52mm)
• 2.35 lbs. (1 Kg)
• Includes 15VDC power supply
OUT-2 is isolated to get rid of buzz
and hum caused by ground loops.
TUNER output keeps
the tuner out of the
main audio path.
OUT-2 features ground
lift and polarity reverse
to keep amps in phase.
Footswitch
activates BOTH
amps at the
same time.
OUT-1 is the direct
output and connects
to main amplifi er.
3-position switch lets
you control function of
BOOST footswitch.
Footswitch selects
amp-1 or 2. No
tap-dancing with
innovative Toggle
Mode™.
GAIN control adjusts the
amount of BOOST level.
DRAG control corrects
the load to properly
match your pickups.
3-position MID
BOOST switch
for added cut
and sustain.
BOOST footswitch
kicks up the level for
soloing. Level is set
with GAIN control.
Switchbone Setup
Amp switching done right. Switchbone connects your
guitar, two amplifi ers and a tuner. Figure in the gain and
mid Vari-Boost modes and that’s eight different tones!
Direct Out
“...the Switchbone sounds
great! Best ABY box that I
have used and the transformer
isolation makes it easy to
combine any two amps without
noise.”
~ Allan Holdsworth
Editors Pick award
“We tested Marshals
and Fenders, Voxes
and Victorias and other
combinations, with nothing
but stunning results.”
“Switchbone gives my rig
plenty of options when called
upon, but also stays out
Isolated Out
Tuner
of the way when not! The
Switchbone is amazing!”
~ Johnny A.
VINTAGE GUITAR
“... this could well be the
best ABY pedal on the
market”
R ad ia l En g in ee ri ng - D iv is io n o f JP Ca bl eTe k E le ct ro ni cs L td . · Te l: 6 04 -9 42- 10 01 · F ax : 604 -9 42 - 10 10 · ww w. t on eb on e. com · e m ai l in fo @r ad ia le ng . co m
T hi s do cu m en t is t he p ro pe rt y o f JP Ca bl eTe k E le ct ro ni cs L td . S ma rt S he et ( C ) Su bj ec t to c ha ng e wi th ou t no t ic e.
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