1. The Synergy modular products must never be operated without modules
installed in all slots without covering the unused slots.
2. Slots without modules must be covered with a blank cover panel, available
from Synergy Amps.
3. Never place your hand or any other object inside an open module slot for any
4. If a foreign object does accidently fall inside an open slot, immediately turn
the main power off and UNPLUG THE AC POWER CORD. Tip the unit
forward to get the object to fall forward and out of the slot. Do not stick your
fingers into the slot to reach it.
5. If the foreign object has fallen inside and you cannot see the object, do not
stick your hand into the slot to search for it. Take the unit to a qualified
service technician to safely remove it.
Failure to heed the above warnings can result in personal injury or death. We
want you to enjoy your Synergy Modular gear and not get hurt being foolish
and failing to adhere to the warning.
Please keep this instruction manual for future
reference and for the duration of owning this
SYNERGY Amplifier. Please carefully read and
understand the instructions inside this user’s
manual before attempting to operate your new
amp. This instruction manual includes essential
safety information regarding the use and
maintenance of the amplifier. Take special care to
heed all warning symbols and signs inside this
manual and those printed on the amplifier itself.
The lightning flash with an arrow triangular
symbol is intended to alert the user to the
presence of non-insulated “dangerous
voltage” within the products enclosure, and may
be of sufficient magnitude to constitute a risk of
electric shock
The exclamation point triangular symbol is
intended to alert the user to the presence of
important operating and maintenance (servicing)
instructions in the user manual accompanying this
1. Read Instructions – All the safety and operating
instructions should be read before this product is
2. Retain Instructions – The safety and operating
instructions should be retained for future
3. Heed Warnings – All warnings on the PREAMP
and in the operating instructions should be
adhered to.
4. Follow Instructions – All operating and use
instructions should be followed.
5. Water and Moisture – The PREAMP should not
be used near water – for example, a bathtub,
washbowl, kitchen sink, laundry tub, wet
basement, or near a swimming pool, and the like.
6. Heat – PREAMP should be situated away from
heat sources such as radiators, heat registers,
stoves, or other PREAMP (including PREAMPs)
that produce heat.
7. Power Sources – This product should be
operated only from the type of power source
indicated on the rating label.
If you are not sure of the type of power supply to
your home, consult your product dealer or local
power company.
8. Grounding or Polarization
– This product may be equipped with a polarized
alternation-current line plug (a plug having one
blade wider than the other). This plug will fit into
the power outlet only one way. This is a safety
feature. If you are unable to insert the plug fully
into the outlet, try reversing the plug. If the plug
should still fail to fit, contact your electrician to
replace your obsolete outlet. Do not defeat the
safety purpose of the polarized plug.
9. Power-Cord Protection
– Power-supply cords should be routed so that
they are not likely to be walked on or pinched by
items placed upon or against them, paying
particular attention to the cord in correspondence
of plugs, convenience receptacles, and the point
where they exit from the PREAMP.
10. Cleaning – The PREAMP should be cleaned
only as recommended by the manufacturer. Clean
by wiping with a cloth slightly damp with water.
Avoid getting water inside the PREAMP.
11. Non-use Periods – The power cord of the
PREAMP should be unplugged from the outlet
when left unused for a long period of time.
12. Object and Liquid Entry
– Care should be taken so that objects do not fall
and liquids are not spilled into the enclosure
through openings.
13. Damage Requiring Service
– The PREAMP should be serviced by qualified
service personnel when:
A. The power-supply cord or the plug has been
damaged; or
B. Objects have fallen, or liquid has been spilled
into the PREAMP; or
C. The PREAMP has been exposed to rain; or
D. The PREAMP does not appear to operate
normally or exhibits a marked change in
performance; or
E. The PREAMP has been dropped, or the
enclosure damaged.
F. The PREAMP needs tube replacement or biasing
14. Servicing – The user should not attempt any
service to the PREAMP beyond that described in
the operating instructions.
All other servicing should be referred to qualified
service personnel.
15. Ventilation – Slots and openings in the cabinet
are provided for ventilation and to ensure reliable
operation of the product and to protect it from
overheating, and these openings must not be
blocked or covered. The openings should never be
blocked by placing the product on a bed, sofa, rug,
or other similar surface. This product should not
be placed in a built- in installation such as a
bookcase or rack.
16. Attachments – do not use attachments not
recommended by the product manufacturer as
they may cause hazards.
17. Lightning – For added protection for this
product before a lightning storm, or when it is left
unattended and unused for long periods of time,
unplug it from the wall outlet. This will prevent
damage to the product due to lightning and power
line surges.
18. Replacement Parts – When replacement parts
are required, be sure the service technician has
used replacement parts specified by the
manufacturer or have the same characteristics as
the original part. Unauthorized substitutions may
result in fire, electric shock, or other hazards.
19. Safety Check – Upon completion of any service
or repairs to this product, ask the service
technician to perform safety checks to determine
that the product is in proper operating condition.
20. FUSES – Always use the correct rating and type
of fuse as indicated on the rear panel. Note the
proper rating fuse is determined by the AC line
voltage in the country this unit is being operated.
NOTE: This equipment has been tested and found
to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules.
These limits are designed to provide reasonable
protection against harmful interference in a
residential installation. This equipment generates,
uses and can radiate radio frequency energy and,
if not installed and used in accordance with the
instructions, may cause harmful interference to
radio communications. However, there is no
guarantee that interference will not occur in a
particular installation. If this equipment does
cause harmful interference to radio or television
reception, which can be determined by turning
the equipment off and on, the user is encouraged
to try to correct the interference by one or more
of the following measures: - Reorient or relocate
the receiving antenna. - Increase the separation
between the equipment and receiver. - Connect
the equipment into an outlet on a circuit different
from that to which the receiver is connected. Consult the dealer or an experienced radio/ TV
technician for help.
Changes or modifications not expressly approved
by the party responsible for compliance could void
the user’s authority to operate the equipment.
This device complies with part 15 of the FCC Rules.
Operation is subject to the following two
conditions: (1) This device may not cause harmful
interference, and (2) this device must accept any
interference received, including interference that
may cause undesired operation.
of the following measures: - Reorient or relocate
the receiving antenna. - Increase the separation
between the equipment and receiver. - Connect
the equipment into an outlet on a circuit different
from that to which the receiver is connected. Consult the dealer or an experienced radio/ TV
technician for help.
Congratulations on your purchase of the SYN-2 preamp. The SYN2 is the culmination of many years refining and fine tuning our
modular preamp concept. Please familiarize yourself with the many
possibilities to get the best performance out of your preamp.
The SYN-2 can be used in three primary applications:
1) The SYN-2 can be used to add channels to an existing head or combo
• Your amp MUST have a series effects loop
• It will NOT work with certain loops. See details later in this manual.
2) Straight to front of house or monitor
• In a live setting you can use the cab simulated DI output to go straight to your board or
active monitor.
3) Recording
• Use the DI output to connect to an external mic preamp and then directly to your
• The cabinet simulation can be bypassed if you wish to use your own IRs.
Quick connection guide:
Option 1) To use the SYN-2 as a standalone preamp to record directly into your computer or direct
to a PA live, simply use the balanced XLR DI output to send the signal to the desired location.
Option 2) To use the SYN-2 in a “normal” live rig using guitar type speakers, connect the MAIN out
to the input of your power amp/speaker combination or into a powered speaker specifically voiced
for guitar. Alternately, you can connect the MAIN out into the effects return of most amps and use
the head or combo as just a power amp and the SYN-2 becomes the preamp.
Option 3) This is the coolest thing the SYN-2 can do. With this setup, you can actually use the SYN-2
to add the module as another channel to your amp and footswitch between the channels in your
amp and the SYN1.
These different methods will be explained in detail later in this manual. Please read the entire
manual to get a true understanding of all the possibilities.
T500mA/250V @ 110-118VAC 50/60Hz - NORTH AMERICA
T250mA/250V @ 220-240VAC 50/60Hz - EUROPE
REPLACING MODULES: When inserting or removing modules, simply turn both thumbscrews to the left until
they fall loose. Do not remove the screw completely. Remove the module by pulling out on the
thumbscrews. Slide in a new module, and push in on the center knobs until flush with the front panel.
Tighten the thumbscrews, by turning to the right until snug. The thumbscrews must be snug for proper
module grounding. You don’t need to “crank” them down but do not leave them loose.
It is HIGHLY recommended that you turn the SYN-2 OFF before swapping modules. If however you "hot
swap" a module, you may find that at times the switching logic may not work correctly. To re-set this,
simply turn the SYN-2 OFF and then back ON after one second.
1. INPUT JACK - Connects directly to your instrument
2. CH./STORE - Selects the desired channel on your module. This momentary push button will sequentially
step through the module channels. Each time the button is pressed and released, the SYN-2 will step to
the next channel. This is also used in MIDI programming - described later in the manual.
3. SAG - Under license from Steven Fryette Designs, the SAG knob mimics the voltage sag of a tube
amplifier. This effect is subtle and is really a “feel” thing. It is recommended that you adjust the knob to
level where the LED just comes on with heavy guitar pick attack.
4. VOLUME - Depending on how the SYN-2 is connected, this knob either controls the overall volume of the
SYN-2 or the level of the main output.
IMPORTANT - When using the SYN-2 to add channels to your head or combo, the
VOLUME control will not be active. In this scheme, the VOLUME will adjust the
level of your MAIN OUTPUT ONLY.
1. AC MAINS INPUT – Connect to a grounded outlet in accordance with the voltage and frequency
specified on the rear panel of your amplifier.
Use only the factory supplied cord or a UL approved equivalent type.
2. MAINS FUSE – The Mains fuse is located in the pull out tray at the bottom of the AC jack. This fuse
protects the unit from serious damage in case of electrical faults
Warning! Replace only with same fuse type and rating.
4. AC power switch turns the SYN-2 on or off.
5. GROUND LIFT SWITCH - This switch is used to eliminate ground loops that can occur when different
earth grounded pieces of audio equipment are interconnected. Simply set the switch for the least
amount of hum. If you do not hear any difference, leave the switch in the left position.
6. PHANTOM POWER IN - Used to power a foot controller that is connected to the MIDI IN jack.
Connecting an external power supply (or wall wart) to this input will automatically send the power
back out to pins 6 & 7 of the MIDI IN jack. Use a 7 pin MIDI cable to send the power through the MIDI
cable alleviating the need to remotely power your pedal.
7. DI OUTPUTS - Balanced XLR outputs used to send your SYN-2 tone straight to the mixing board or
active cabinet
XLR LEVEL - A level switch for the XLR outputs. Use the setting that best matches your mixer.
GROUND LIFT - Lifts ground to prevent ground loops. Set for the lowest hum level.
CAB SIM BYPASS - Removes the cabinet simulation circuitry to become a balanced, full range
8. MAIN OUTS - Left and right full range outputs to connect to external devices such as power amps, FX,
etc. Note: These are not speaker emulated outputs.
9. FX SEND JACK- This output connects to the input of your effects unit. Use a shielded cable.
10. FX RETURN JACKS - Connect the output(s) of your effects unit using shielded cables.
11. EFFECTS LOOP LEVEL SWITCH - Selects between line level and pedal level of the effects loop. Use the
setting that sounds best and does not cause excessive noise or distortion/loss of volume.
12. FROM AMP EFFECTS SEND and TO EFFECTS RETURN jacks - Used when using the SYN-2 to add
channels to and existing amp. This is explained later in the manual.
13. MIDI IN - Input from the SYNERGY 5F foot controller (sold separately), or any external MIDI switching
14. MIDI THRU - MIDI messages/data that is received at the MIDI IN connector is passed through to the
MIDI THRU jack for “looping” to other MIDI controlled units (such as additional SYN-2 units)
15. MIDI CHANNEL-OMNI/SELECT – Used to set up communications with external controllers. See the
MIDI section later in this manual for details.
16. INST IN - Same as the input on your front panel and usually used in a rack set up.
Note - When using the input on the front panel, the "INST IN" is disengaged.
The SYN-2 can be used to ADD channels to your existing head or combo. You will need three high quality,
shielded instrument cables in addition to your guitar cable.
1) Connect your guitar to the front or rear INPUT of the SYN-2. These inputs are functionally the same except
the front input overrides the rear.
2) Connect an instrument cable from "TO AMP IN" on the rear of the SYN-2 to the INPUT of your amplifier.
3) Connect an instrument cable from "FROM AMP FX SEND" to the FX LOOP SEND of your amplifier
4) Connect an instrument cable from "TO AMP FX RETURN" to the FX LOOP RETURN of your amplifier
5) The LEVEL switch between the "FROM AMP FX SEND" and "TO AMP FX RETURN" jacks is used to set the
level of the SYN-2 to help match your effects loop. Because there can widely varying levels between
different effects loops, a little bit of experimentation may be needed to find the optimum setting for this
There are some special requirements and/or caveats when using the SYN to add channels to your amp.
The loop on your amp MUST be a 100% series loop. The SYN1 will not work in a parallel loop. If in doubt,
consult the manufacturer of your amp to determine this. One known issue is with the Mesa Dual and Triple
Rectifier, Road King and Roadster amps that prevents the SYN1 from working properly in the loop. By design,
the Boogie loops always have a small amount of dry signal mixed in with the loop which will wreak havoc
with many effects and also the SYN1. There may be other amps that we are not aware of with loops that are
not compatible. We will make this information available as we discover these issues.
Use the MAIN L (left) and R (right) outputs to connect to rack mount power amps
Use the MAIN L (left) and R (right) DI outputs to connect to your mixer or active monitors. When
using external cab simulation devices (think IR loaders), you can defeat the cabinet simulation
circuitry using the BYPASS switch.
The SYN2 is compatible with most MIDI controllers on the market. You can set up 128 different presets, each
of which can recall a different channel on the preamp.
MIDI IN – This is where you connect your MIDI controller or Synergy 5 button pedal. The connector is 7 pin,
but it can also accept a standard 5 pin MIDI cable. 7 pin cables are only used with MIDI devices that accept
phantom power over pins 6 and 7. If your MIDI device has a 5-pin MIDI connector, it doesn’t accept
phantom power and must be powered with its own power supply.
PHANTOM POWER IN - Used to power a foot controller that is connected to the MIDI IN jack. Connecting an
external power supply (or wall wart) to this input will automatically send the power back out to pins 6 & 7 of
the MIDI IN jack. Use a 7 pin MIDI cable to send the power through the MIDI cable alleviating the need to
remotely power your pedal.
MIDI THRU – If you have additional MIDI devices (such as additional SYN-2 units) in your system, you can
connect them here. Commands from your MIDI controller will be passed through this port to the next
device, allowing your controller to control multiple devices simultaneously.
Setup – The 16 position rotary miniature rotary switch selects the MIDI channel to communicate with your
controller. Use a small screwdriver to set to the desired channel. The slide switch selects OMNI or SELECT
modes. Set the slide switch to SELECT to activate the rotary MIDI CHANNEL switch. OMNI is an alternate
mode that allows the SYN-2 to receive commands on all 16 channels simultaneously.
To program the SYN2 to respond to your MIDI controller, do the following:
1. Make sure your MIDI controller is connected to the SYN2’s MIDI input jack
2. Select a preset on the MIDI controller
3. Using the channel select button on the SYN2, select the module channel (or bypass) you wish to have
come on when the preset is selected using the SYN-2 front panel SELECT pushbutton.
4. Hold the channel select button until the bypass LED flashes. This should take about 3 seconds.
Repeat steps 2 through 4 above for each controller preset you wish to store. The next time you select one of
the programmed presets, the SYN_2 will automatically switch to the desired channel.
Please note: If the bypass LED doesn’t flash after holding the channel select button for a few seconds, the
amp is likely not receiving MIDI commands and the setting will not be stored. Check your MIDI controller and
its connection to your amp. Also make sure that the MIDI controller is set to the same MIDI channel as the
Continuous Controllers
The SYN2 also responds to MIDI continuous controller (CC) messages. These MIDI messages are typically
used for “instant access” buttons on more advanced MIDI controllers – buttons that can be set up to directly
select amp channels. When using CC messages, you don’t need to go through the programming process
described above.
CC Number
Select channel 1A
Select channel 1B
Select channel 2A
Select channel 2B
When selecting a channel using CC messages, only a message with a CC value of 64 or higher will have any
effect. Messages with a CC value of 63 or lower is ignored. The Mute CC (#64) will mute all channels of the
SYN-2 if a value of 64 or higher is received, and will unmute the amp if a value of 63 or lower is received.
Connecting Multiple SYN2s
Follow the steps below to combine 2 or more SYN2 units. In this connection scheme the first SYN2 in the
signal chain is called the “Master” and the second SYN2 is the called the “Slave”.
- Connect your instrument to the Input of the Master unit.
- Run a cable from the "TO AMP IN" of the Master unit to the "INST. IN" on the rear panel of the Slave unit.
- Connect the main output L/MONO of the Slave unit to the "FROM AMP FX SEND" of the Master unit.
- Use the MAIN OUT(s) or the DI output(s) of the MASTER unit to connect to your power amp / monitors.
- Program the Slave with the Master in Bypass Mode.
Note - When using the input on the front panel, the "INST IN" on the back panel is disengaged.
The same procedure is recommended for adding a third, fourth etc. unit to the system
For most systems, it’s recommended that you set your SYN2s to the same MIDI channel. You can follow the
programming instructions above, repeating the steps for each SYN2. When you want to access the second
SYN2, make sure that the first SYN2 is set to bypass.
The pedal is essentially a 5 button MIDI pedal that is preset to send program change commands 1 through 5
on MIDI channel 1. Your SYN2 will come preprogrammed to respond to modules channels 1 through 4 on
buttons 1 through 4. Button 5 will be assigned to BYPASS. You can change/assign any module channel to
bypass to be on any buttons you wish by following the steps under PROGRAMMING above. The 5F pedal can
operate from any power supply that puts out 9 to 12 volts AC or DC and has a current rating of at least 50
Thank you for choosing SYNERGY. SYNERGY takes
great pride in an extremely thorough testing
procedure which is implemented on each
product prior to shipment. In the unlikely event
that you have a problem with your Synergy
product, please refer to warranty below.
PREAMP: SYNERGY offers a limited Three (3) Year
warranty to the original purchaser that this
SYNERGY product will be free from defects in
material and workmanship. A dated sales receipt
will establish coverage under this warranty,
YOUR WARRANTY. This warranty does not cover
service or parts to repair damage caused by
accident, neglect, abuse, normal & wear, disaster,
misuse, abuse, over-powering, negligence,
inadequate packing or shipping procedures and
service, repair or any modifications to the product
which have not been authorized or approved by
product is defective in materials or workmanship
as warranted above, your sole remedy shall be
repair or replacement by SYNERGY as provided
CAUTION: Do NOT attempt to repair, modify or
service this Synergy product by yourself!!!
Please read the instruction manual for all safety
notifications, warnings and instructions.
SYNERGY utilizes tubes with extremely high
voltages that can cause serious injury or death.
Do not remove the chassis cover from the
amplifier. All repair and service work must be
performed by SYNERGY or an authorized service
TUBES: SYNERGY warrants the original purchaser
that the specific tubes used in this SYNERGY
product will be free from defects in material and
workmanship for a period of 90 days from the
original date of purchase. A dated sales receipt
will establish coverage under this warranty. This
tube warranty will automatically terminate 90
days after the original retail sales date. This tube
warranty is in lieu of all other expressed
warranties. If tubes fail within the 90 day warranty
period your sole remedy shall be replacement of
tubes as provided below.
RETURN PROCEDURES: In the unlikely event that
a defect occurs please email A member of our
staff will email you a response in a timely manner.
Please include your phone number in case our
customer service department needs to reach you.
In most cases we can help you diagnose the
problem over the phone. If a product must be
sent to us, please follow the procedure outlined
• Defective products must be shipped,
together with proof of purchase, freight
pre-paid and insured to the Authorized
SYNERGY Service Center or directly to
• If a product must be returned to SYNERGY
for warranty replacement/repair, a Return
Authorization Number must be obtained
from our Customer Service Department
prior to shipping the product.
• Please contact SYNERGY Customer Service
Department for the Authorized SYNERGY
Service Center nearest you.
• Products must be shipped in their original
packaging or its equivalent; in any case,
the risk of loss or damage in transit is to be
borne by the purchaser.
Please send to:
3383 Gage Ave.,
Huntington Park, CA 90255
The Return Authorization Number must
appear in large print directly below the
shipping address.
Always include a brief description of the
defect, along with your correct return
address and telephone number.
When emailing to inquire about a returned
product, always refer to the Return
Authorization Number.
If SYNERGY determines that the unit was defective
in materials or workmanship at any time during
the warranty period, SYNERGY has the option of
repairing or replacing the product at no additional
charge, except as set forth below.
• All replaced parts become a property of
SYNERGY. Products replaced or repaired
under this warranty will be returned via
ground shipping within the United States
or Canada - freight prepaid.
• SYNERGY is not responsible for costs
associated with expedited shipping, either
to SYNERGY or the return of the product to
the customer.
accordance with the 1972 Consumer Product
Safety Act.
CUSTOMER SUPPORT: Our dedicated and friendly
staff is ready to help you with any warranty or
product questions you may have. Please call us at
Thank you again for choosing SYNERGY and we
look forward to a long relationship!
All warranty repairs outside the United States and
Canada must be directed to the dealer or
distributor from which you purchased the
event will SYNERGY be liable for any incidental or
consequential damages arising out of the use or
inability to use of any SYNERGY product, even if a
SYNERGY dealer has been advised of the
possibility of such damages, or any other claim by
any other party. Some states do not allow the
exclusion or limitation of consequential damages,
so the above limitation and exclusion may not
apply to you. This warranty gives you specific legal
rights and you may also have other rights which
may vary from state to state.
FOR YOUR PROTECTION: Please complete the
warranty registration online at within (10) ten days of
the date of purchase so that we may contact you
directly in the event a safety notification issued in