shiva DUALITY User manual
AUDIO DEVICES
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Duality
User Manual
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INDIEX
INTRODUCTION pg 1
POWER SUPPLY pg 3
TECHNICAL FEATURES pg 5
MIDI AND SAVING A PRESET pg 8
TROUBLESHOTTING pg 9
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INTRODUCTION
Duality is a two channel, modern style, guitar amplifier. Thought as ultimate tone weapon, featuring
rich but simple clean crispy sound and a tridimensional multi stage overdriven channel.
Full MIDI implementation (CC and PC), double master volume and a full high voltage tube buffered
effects loop make Duality your life as guitarist easier than ever before.
Additional information can be found at www.shivaaudio.com or you can contact us any time at
POWER SUPPLY
Duality is shipped with hardwired primary voltage. 230V or 115V must be chosen at order time.
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NOTE: IMPORTANT…NOT TO DO!
• Do not try to switch output impedance switch while the amplifier is on. You must
turn STANDBY and POWWER switches to OFF position before changing the
output impedance.
• Do not try to change input/output levels of you devices plugged into fx loop
while the amplifier is on. You must turn STANDBY and POWWER switches to OFF
position before changing input/output levels of your gear plugged into fx loop
or at least disconnect cables form SEND and RETURN jacks.
THIS OPERATIONS CAN LEAD TO FINAL BREAK OF THIS AMPLIFIER. IN THOSE
PARTICULAR CASES SHIVA AUDIO DEVICES WILL NO BE RESPONSIBLE FOR
DAMAGES TO AMPLIFIER ITSELF OR PEOPLE. PLEASE KEEP IN MIND YOU ARE
HANDLING A DEVICE WITH POTENTIALLY LETHAL VOLTAGE. PLEASE CAREFULLY
READ THIS MANUAL BEFORE TURING ON THE AMPLIFIER.
WARNING!!
This amplifier uses potential lethal voltage, it must be used only by
expert people!
WARNING!!
Before insert power chord inside Duality, check the voltage plate
under IEC socket and be sure to match wall voltage of your
country.
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TECHNICAL FEATURES
FRONT PANEL:
(from left to right)
• STANDBY / ON SWITCH:turn the amplifier in standby mode or in operative
mode.
• RED LED: (under STANDBT / ON SWITCH): this led will indicate the state of
incoming power supply. It will turn on if everything is ok.
• GREEN LED: when on, clean channel is activate.
• BLUE LED: when on, dirty channel is activate.
POTS:
• CHANNEL 1 (clean channel): Volume, Treble, Bass.
• CHANNEL 2 (dirt channel): Gain, Treble Middle, Bass, Volume.
• COMMON: Master 1, Master 2.
SWITCHES:
• CHANNEL 1: (clean channel): Bright switch (bright 1/ normal / bright 2), Mid (mid
1 / mid 2).
• CHANNEL 2: (dirt channel): Bright switch (bright 1/ normal / bright 2).
TACTILE SWITCHES:
• CHANNEL: select between clean and dirt channels.
• MODERN: select between vintage and modern mode on dirt channel.
• LEAD: turn on lead boost on dirt channel and in both modes (vintage and
modern)
• MASTER 2: activate Master 2, available on both channels.
• LOOP: activate serial loop effect on both channels
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REAR PANEL
(from left to right)
• PRESENCE:global setting for presence control. It acts on both channels.
• FOOTSWITCH:input socket for Duality FS. Pay attention: it can be used ONLY
Duality FS, other FS can damge the amp.
• MIDI IN & MIDI THRU: sockets for midi communications. Midi IN receive midi
signal, Midi THRU left midi signal pass thru without modify original messages.
• STORE SWITCH:tactile switch for saving combinations of sounds into amplifier
digital memory.
• SEND & RETURN:Connection between pre amp and power amp. Duality is
shipped with pedals friendly level, it can be modified as live level under request.
• OUTPUT IMPEDANCE:parallel jacks for connect you cabs and rotary switch for
match correct impedance between the amp and cabs.
• HT FUSE: (1A slo blow) high current fuse. Replace ONLY with same type.
• MAIN FUSE: (2.5A slo blow) input voltage fuse. Replace ONLY with same type.
• IEC SOCKET:connect power cable here.
• POWER ON / POWER OFF SWITCH: turn the amplifier on or off.
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FIRST USAGE
Before plug the power chord make sure to check the input voltage of the amplifier with
your wall voltage, and then insert the power chord.
Before plug the speaker cable, check the impedance of your cab and match the output
impedance of amplifier with impedance switch on rear panel, than connect the speaker
cable from cabinet to amplifier.
Now you’re ready to put Power Switch to “POWER ON” position.
Leave the amplifier in this state for at least thirty seconds.
Plug your signal cable into input jack than you’re ready to put Standby Switch in “ON”
position. Now you can rock’n’roll!
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MIDI
Duality, despite the full tube audio signal path, is equipped with digital memory which
can make saving combinations (preset) of functions inside the amp.
Duality is shipped with pre setted midi channel #1. You can’t change midi channel on
the fly after bought it, but you can ask for a different midi channel at order time.
All the functions are recallable on the fly via midi CC. This is the full CC list:
• Channel selection: CC #100
• Vintage / Modern mode: CC #101
• Lead boost: CC#102
• Loop effects on /off: CC#103
• Master 1 / Master 2: CC#104
All the CC are also be changed for a custom numbers, but only at order time.
SAVING A PRESET
Saving a preset is quite easy with Duality, it takes only few steps:
• Choose the desired combination of functions (channel, boost, master, etc);
• Keep pressed for three seconds “STORE” button on rear panel, until
corresponding led turn on, than release it;
• Send the desired Program Change you want memorize this particular
combination;
• Store led will blink couple time for confirmation;
• You preset is now created.
You can save and re-save a preset infinite time. With this procedure you can use
different midi pedalbords or interface for recall preset without losing data, because all
presets are stored inside the amp. You only need to send the exact PC and it will recall
the same combination of functions every time forever.
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TROUBLESHOTTING
• DUALITY IS NOT TURNING ON
Check the power chord, sometimes it will be loose and cannot make good
contact with IEC socket. Replace it. If this doesn’t work check MAIN fuse, if it’s
blown replace with SAME type and try again to turn on again. If fuse continue to
blown, turn off the amp and contact Shiva A.D.
• DUALITY IS TURNING ON (RED LED IS ON) BUT WITH NO SOUND
First of all be sure to connect speaker cable properly, both amplifier as the cabinet.
Check the input signal from guitar too. If this doesn’t work check HT fuse, if it’s
blown replace with SAME type and try again to turn on again. If fuse continue to
blown, turn off the amp and contact Shiva A.D.
• DUALITY IS MAKE NO SOUND
If everything works properly be sure to have both relative channel volume and
master volume turned up.
• I’M NOT ABLE TO SAVE A PRESET
Read “SAVING A PRESET” chapter and do meticulously what it’s wrote. You have
to follow any step and not swap them. Check midi cable and try to replace it. Be
sure to connect your sending devices via MIDI OUT socket and Duality MIDI in
socket and not vice-versa.
If for some reason this doesn’t work contact Shiva A.D.
• I’M NOT ABLE TO RECALL A PRESET
Be sure to set up your midi board or midi interface on midi channel 1. Any other
channel will not work and you will not able to recall a preset. Check midi cable
and try to replace it. Be sure to connect your sending devices via MIDI OUT socket
and Duality MIDI in socket and not vice-versa.
For any problem and in any moment you can contact a qualified tech at:
We will replay to you as soon as possibile.
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Revision 1.1
Novemebr 2016
