AGD TEMPO User manual

AGD Productions, Inc.
AGD Tempo di GaN Stereo Power Amplifier Operating Manual_Rev1 Page. 1 of 20

AGD Productions, Inc.
AGD Tempo di GaN Stereo Power Amplifier Operating Manual_Rev1 Page. 2 of 20
“TEMPO”di GAN
Stereo Reference Amplifier
by AGD Productions, Inc.

AGD Productions, Inc.
AGD Tempo di GaN Stereo Power Amplifier Operating Manual_Rev1 Page. 3 of 20
“TEMPO”di GaN
STEREO Reference Amplifier
by AGD Productions, Inc.
Operating Manual
Rev.01
Document Date, November 25th, 2021
CAUTION
THE UNIT CONTAINS NO USER SERVICEABLE PARTS.
DO NOT REMOVE THE PANELS OR ANY SCREWS OR CONNECTORS.
DO NOT OPERATE THE UNIT WITHOUT THE GLASS TUBE FULLY
INSERTED IN THE PROPER SOCKET.
DO NOT OPERATE THE UNIT IF WET OR NEAR WATER OR IN
UNCONTROLLED OUTDOOR CONDITIONS.
BE CERTAIN TO INSTALL IT IN A SECURE LOCATION FROM WHICH IT
CANNOT FALL OR TIP OVER.
TIME SPENT FAMILIARIZING YOURSELF WITH THIS MANUAL WILL BE
WELL REWARDED.

AGD Productions, Inc.
AGD Tempo di GaN Stereo Power Amplifier Operating Manual_Rev1 Page. 4 of 20
Table of content:
1. About this document......................................................page 5.
2. Letter from AGD Team ...................................................page 6.
3. Important Safety Instructions ........................................page 7.
4. Specification ...................................................................page 8.
5. Unpacking the AGD TEMPO ...........................................page 9.
6. Installation of the AGD TEMPO......................................page 10.
7. Back Panel Description...................................................page 11.
8. Operation .......................................................................page 12.
9. Fault Conditions..............................................................page 15.
10. Fuse replacement...........................................................page 16.
11. Troubleshooting .............................................................page 18.
12. CE and FCC Certification.................................................page 19.

AGD Productions, Inc.
AGD Tempo di GaN Stereo Power Amplifier Operating Manual_Rev1 Page. 5 of 20
1- About this document
This Owner’s Manual covers unboxing of, familiarization with, and
configuration of your new amplifier. This manual will enable you to optimize
the behavior and performance of your amplifier to fit your preferences of
your equipment and listening room.
This user manual is integral part of the AGD “TEMPO”and must be available
and consulted prior the installation of the equipment.
AGD “TEMPO”is designed to operate indoor and must be utilized uniquely
for the scope of audio signal amplification within the specifications and
conditions defined in the manual.
It is strongly recommended that you follow this manual in the order in which
it is written so that you understand the safety considerations before
configuring the amplifier.

AGD Productions, Inc.
AGD Tempo di GaN Stereo Power Amplifier Operating Manual_Rev1 Page. 6 of 20
Dear Customer,
I have always been driven by my passion to merge perfection and
beauty in the art of Audio reproduction. The GaN MOSFET
technology gave me the opportunity to commence this journey in
the Hi-End Audio. Therefore, it is so important for all of us at
AGD to thank you for choosing the AGD “TEMPO” di GaN for
your unique Hi-End audio experience. The AGD “TEMPO”is one
of the most advanced Hi-End Power Amplifier on the market
today. Among other remarkable innovations, it is also our first
STEREO Hi-End Amplifier design to use the unique GaNPower
modular technology. The Gallium nitride Power MOSFETS
components we choose are the main reason for the stunning
acoustic characteristics of the AGD TEMPO. The key elements of
the GaN output power stage are integrated in a dedicated board,
the AGD GaNPower Module, that allows the possibility for future
seamless upgrades of the power stage. The AGD “TEMPO” is a
leading-edge power electronics design into an extremely compact
mechanical solution, that delivers an unprecedented sublime and
incredibly realistic audio reproduction experience. We at AGD
Productions are confident the “TEMPO” di GaN will meet your
expectations and we will always stand in support of your needs
and future requirements.
Sincerely
Alberto Guerra
CEO, AGD Productions, Inc.

AGD Productions, Inc.
AGD Tempo di GaN Stereo Power Amplifier Operating Manual_Rev1 Page. 7 of 20
3- Important safety instructions:
READ ALL INSTRUCTIONS: All the safety and operating instructions
of your AGD VICACE MONOBLOCK AMPLIFIER should be read before
power is applied to the equipment.
RETAIN OWNER'S MANUAL: These safety and operating instructions should be
retained for future reference.
READ WARNING: All warnings on the unit and in the operating instructions should
be adhered to.
FOLLOW INSTRUCTIONS: All operating and use instructions should be followed.
CLEANING: Unplug the unit from the wall outlet and leave for at least 10 min. - make
sure the unit is not hot before you start cleaning. Use dry or damp soft cloth to clean
the surfaces. Do not use corrosive/abrasive spray for cleaning.
VENTILATION: Do not block any ventilation openings. Do not install near any heat
sources such as radiators, heat registers, stoves, or other apparatus (including other
amplifiers). The unit should not be installed in a built-in location such as a bookcase
or rack unless proper ventilation is provided.
GROUNDING: Do not defeat the safety purpose of the grounding-type plug. A
grounding-type plug has two blades and a third grounding prong. The third prong is
provided for your safety. If the provided plug does not fit into your outlet, consult
an electrician for replacement of the obsolete outlet.
POWER CORD PROTECTION: Protect the power cord from being walked on or
pinched particularly at plugs, convenience receptacles, and the point where they
exit from the apparatus.
LIGHTNING: Unplug this apparatus during lightning storms or when unused for long
periods of time.
SERVICING: Refer all servicing to qualified service personnel. Servicing is required
when the apparatus has been damaged in any way, such as if the power-supply cord
or plug is damaged, liquid has been spilled inside the appliance or it has been
exposed to moisture, the appliance does not operate normally, or has been
dropped.
DO NOT OPEN THE CABINET: There are no user serviceable components inside this
product. Opening the cabinet may present a shock hazard and any modification to
the product will void your warranty.
WARNING: To reduce the risk of fire or electric shock, do not
expose this apparatus to rain or moisture.

AGD Productions, Inc.
AGD Tempo di GaN Stereo Power Amplifier Operating Manual_Rev1 Page. 8 of 20
4- Introduction:
AGD “Tempo” di GaN Reference Stereo Amplifier
Design Philosophy
The AGD “TEMPO” Stereo Amplifier, is the new addition to our state of the art Hi-
End Power Amplifiers family. The “TEMPO”is our first compact Stereo Amplifier.
The AGD TEMPO uses the same fundamental technology pioneered with the AGD
Vivace, the first Hi-End amplifier based on Gallium Nitride power MOSFET, the award
winning AGD THE AUDION and The AGD GRAN VIVACE.
The AGD “TEMPO” is rated 200+200W 4Ohm (100W+100W 8Ohm) and 400W 4ohm
in bridge mode configuration (mono-block operation).
To achieve these performances in such compact CNC machined cabinet, we have
designed a new GaN-based output power stage with a new mother board that
contains the low noise power supply and all the analog buffer stages, small enough
to enable these outstanding minimalistic footprints.
As for all AGD amps, the GaN-based power stage module utilized in the AGD TEMPO
is fully upgradable. That means when future generations of GaN devices with
improved technology will be available, AGD will offer a new GaNPower module
option to maintain the full value of the product in time. Moreover, the TEMPO can
operate also in bridge-mode delivering in this configuration twice the nominal
stereo output power, 400W on 4ohm.
Thanks to a world-class PCB design, a refined selection of top-quality audio grade
components, and the extremely efficient GaN-based power stage we achieved the
design’s goal to operate this integrated Stereo Version of at >600kHz as main PWM
frequency. The higher PWM frequency operation delivers a direct and positive
impact on the overall outstanding sonic and musical performances with sublime
mid-high range realism along with the unique tight and controlled bass register.

AGD Productions, Inc.
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5- Specifications:
PARAMETERS
Nominal Output Power at 0.1% THD+N,
20Hz÷20KHz, 4Ω
200+200W
THD+N 10W/1KHz
<0.01%
Maximum Output Power at 0.01% THD+N,
1KHz, 8Ω
100+100W
Audio Bandwidth ±0.5dB
20Hz÷20KHz
Bandwidth ±3dB
5Hz÷80KHz
Input Impedance
40kohm (600ohm upon request)
Efficiency%
>94%
Bridge Mode Max output power 4Ω
400W
Power Stage Gain
23db
Dynamic Range
>120dB
Dimension
11x3.75x7.1in (280x95x180mm)
Weight
10lbs (5kg)
Input Voltage
100-240V (auto-switch)
❹

AGD Productions, Inc.
AGD Tempo di GaN Stereo Power Amplifier Operating Manual_Rev1 Page. 10 of 20
6- Unpacking
Unpacking
All AGD products shipping boxes have been specially designed to protect
their contents and special care has been taken to prevent damage under
normal shipping conditions.
When unpacking your amplifier:
•Mishandling should be evident upon inspection of the shipping
container.
•Carefully remove your new component from its packaging and
examine it closely for signs of shipping damage.
•We strongly recommend saving all original packaging to protect your
component from damage, should you wish to store it or ship it later.
CAUTION: In case of doubt DO NOT attempt to lift or move the power
amplifier case without adequate assistance. The shipping weight of the
amplifier may exceed what a single person should lift alone.

AGD Productions, Inc.
AGD Tempo di GaN Stereo Power Amplifier Operating Manual_Rev1 Page. 11 of 20
7- Installation
POWER REQUIREMENTS:
The amplifier is configured for 100, 115, or 220/240 VAC power operation at
50Hz or 60Hz. Before operating, ensure that the power label on the rear
panel near the AC input connector indicates the correct operating voltage.
A detachable IEC power cable intended for use in the region where the unit
is sold is included.
WARNING: The unit should be operated only at the rated
voltage indicated on the power connector. If you are not
sure what the main voltage supplied to your home is,
consult with your unit dealer.
•Avoid power conditioners that float the ground pin.
•ALWAYS connect power cord to component before plugging it into an AC
outlet and make sure that unit's main switch is set to the “OFF” position
before making the final connection.
•For best performance, try to position the power cord away from the
input signal cables.
•Pay close attention to power quality and be aware that different power
cords can alter the sound.
•For initial power-up, operate the main switch located on the back-panel
power entry module.
•BE CERTAIN TO INSTALL THE UNIT IN A SECURE LOCATION FROM WHICH
IT CANNOT FALL OR TIP OVER.
•Do not operate on carpet or any other surface that might block air flow.
•Do not allow the chassis to touch any metal parts, such as the frame of
an equipment rack. This might create a parallel ground path that could
degrade the sound of your system.
•Connect the source's cables to their appropriate inputs.
•Connect your speakers using the binding posts
•Make sure to have the input selector positioned on the correct
connector of choice (XLR or RCA)
•For initial power-up, operate the main switch located on the back-panel
power entry module.
•Push the push-button ❹on the front panel, a LED will illuminate the
logo. This push-button if pressed again will also place the unit in stand-
by without the need to operate the main-power switch.
IMPORTANT: READ THE SECTIONS “BACK PANEL”

AGD Productions, Inc.
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8- Back Panel
The AGD “TEMPO” back panel configuration is perfectly symmetrical and
offers easy access to both the single ended and Balanced inputs connectors.
The inputs (completely independent) are selectable via toggle switch. The
stereo-bridge switch enables the operation of the amplifier in bridge mode
as 400W monoblock power stage (input signal via the right-channel input).
Two sets of super rugged solid copper binding posts, specially designed by
AGD, and the connections for remote trigger input and output (12V DC only
–mono 3.5mm jack) complete the back panel configuration.
The AGD “TEMPO”back panel has the following features:
❶Power entry module
❷Fuse holder
❸Main Power Switch
a. Plug the power cord securely before turning on the unit.
b. Always unplug the unit from the wall outlet first.
❺❻❼❽ Speaker binding posts
The binding posts can accept large speaker cables either via std. banana
plugs or by locking the exposed copper wire directly though the binding post
hole. Take extreme caution and make sure to always have a very secure and
tight closure of the binding post to minimize contact resistance and maintain
a stable connection.
❺+ RED SPEAKER OUTPUT POSITIVE TERMINAL - Right Channel
❻- BLACK SPEAKER OUTPUT NEGATIVE TERMINAL - Right Channel
❼+ RED SPEAKER OUTPUT POSITIVE TERMINAL - Left Channel
❽- BLACK SPEAKER OUTPUT NEGATIVE TERMINAL - Left Channel
In case of bridge mode operation, the LEFT positive terminal ❼is the
positive output and the Right positive terminal ❺is the negative output.
Please pay particular attention not to connect any of these outputs to
ground nor use this output configuration to connect to the input of any
sub-woofer unit. This will simply damage the unit and may nullify the
warranty terms.

AGD Productions, Inc.
AGD Tempo di GaN Stereo Power Amplifier Operating Manual_Rev1 Page. 13 of 20
❾Analog input selector switch: XLR-RCA
We recommend operating the input selection when the input signal is not
present, or before powering up the unit.
❿STEREO-BRIDGE mode operation
We recommend operating the STEREO-BRIDGE SELECTOR only with the
unit in power-off status. When in Bridge mode, the amplifier operates as
single mono-block power amp, hence 1 amp per channel is required.
⓫⓬ XLR Balanced analog input –Right & Left Channel.
Balanced Analog input: recommended for the optimal performance and
in case of longer 1mt connections from the source.
⓭⓮ RCA Single ended input - Right & Left Channel.
Single ended Analog input: recommended only in case of short
connection if the source has no balance output.
⓯Trigger input-output connector.
The AGD TEMPO can be operated in REMOTE Stand-by with a 12V DC
input applied to the Trigger input connector. A single mono 3.5mm jack
is needed for the operation.
For user convenience a secondary trigger output is available to connect
in daisy-chain other amplifier units (the trigger output of one amplifier
connected to the trigger input of the following unit).
❶
❷
❸
❺
❻
❼
❽
❾
❿
⓯
⓫
⓬
⓭
⓮

AGD Productions, Inc.
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The AGD “TEMPO” is delivered with 1.5mt. power cord with either US or
UK or EU IEC standard plug.
The power cord provided as standard with all AGD amplifiers is an Audio
Grade power cable manufactured and tested under specific characteristics
from AGD Productions. In case the customer decides to utilize a different
power cable to operate the unit, please make sure that the correct cable
with proper size for current handling and signal norm is strictly observed.
Please refers to the following detailed picture
Any alteration of the power entry module or the use of a cable non-
conforming to international safety standard or the use of the unit without
the proper ground connection can be dangerous, and among other things
damage the unit itself with the consequence to null the terms of the
manufacturer warranty.
Live
(Hot)
Ground
Neutral

AGD Productions, Inc.
AGD Tempo di GaN Stereo Power Amplifier Operating Manual_Rev1 Page. 15 of 20
9- Operation
1- Connect the speaker cables to the speakers binding posts
❺❻❼❽
•Caution! Be careful to not short the positive and negative
outputs together.
•Do not short the positive or negative outputs to chassis or
any other safety ground.
•The amplifier must be powered-off during installation and
whenever input and/or output cables are being connected.
•Caution! DO NOT OVERTIGHTEN the binding posts. High-
contact, tight pressure connections are achieved when
finger-tightened.
2- Connect the input signal to the RCA Single Ended input socket ⓭⓮
or to the XLR balanced input socket ⓫⓬ based on the preferred
standard of the source in use.
3- Position the analog input selector switch ❾accordingly to the input
of choice. In other words, oriented up for the XLR balanced input, or
down for the RCA single ended input.
4- Turn-on the units by the main on/off switch.
5- Press the stand-by switch ❹on the front panel.
6- The AGD TEMPO is ready and functional.
7- If the stand-by switch logo is not illuminated, check if the power cord
is properly inserted in the wall socket and in the power entry module
and if the power switch is in the ON position.
8- If no change occurs, disconnect the power cord, and control the fuses.
9- If power does not come up, contact your authorized dealer
representative.
10-If the dealer is not providing within 24hrs any answer, contact directly
AGDproductions by sending an email to the following address:
[e-mail]

AGD Productions, Inc.
AGD Tempo di GaN Stereo Power Amplifier Operating Manual_Rev1 Page. 16 of 20
10-Fault Conditions
The unit is designed to prevent damage to itself and associated
components. These extensive features protect both the critical circuitry of
the amplifier itself and shield connected loudspeakers from serious
damage due to high power levels.
Basic protections designed into the amplifier include fuses to protect
against excessive current conditions, such as driving shorted outputs.
Inrush limiting prevents premature aging of the power supply components
during power-up; once the power supply has been charged, this feature
goes offline until the amplifier is powered up again. The amplifier actively
monitors operating temperature, output current demands, and the
presence of DC on the outputs.
The amplifier will shut down under any of these conditions.
NON-CRITICAL FAULTS
They are neither caused by nor harmful to the amplifier. Non-critical faults
either clear themselves over time (such as over temperature) or are easily
remedied by the owner without dealer or factory intervention (such as
shorted speaker terminals).
Examples of non-critical faults are:
•Heatsink or internal temperature is above safe operating limits
•DC detected at input
•Shorted speaker terminals or extremely low impedance load connected.
If a non-critical fault occurs, check the speaker cables and terminals and
the operation of the preamp in the system.
Turn-off the AC power to clear the fault and then turn the unit on again
after fixing the issue.
If the amplifier is too hot, wait for it to cool down.
When it reaches a safe operating temperature, you will be able to turn it
on again.
If you are unable to remedy a non-critical fault condition, please contact
your retailer or installer for assistance.

AGD Productions, Inc.
AGD Tempo di GaN Stereo Power Amplifier Operating Manual_Rev1 Page. 17 of 20
11-Fuse installation/replacement
The AGD “TEMPO”is configured to operate with the mains input voltage
of any country, hence i.e., 100/110V for USA and Japan, 220/240V for
Europe, China, UK, and all other countries.
The main power switch entry module also contains the fuse holder, and it
is easily accessible by opening the plastic cover that holds it as shown in
the following picture.
The plastic door and the fuse holder can be opened and extracted by
hand; however, it is recommended to use a small flat screwdriver or the
tip of a pen to facilitate the operation.
Only the inner fuse is operative, the second is for spare.
The fuse is placed inside of the block, and it is easily accessible once the
module is fully extracted.
Please refer to the following picture:
The fuse holder can be opened and
extracted by hand; however, it is
recommended to use a small flat
screwdriver or the tip of a pen to
facilitate the operation.
In case of a change of the input voltage
of operation, please make sure the
correct fuse is used. In case you need to
replace the fuse, make sure to select
only a version with the correct
amperage as described:
•3.5A Slow blow for 220/240VAC.
•6.3A Slow blow for the 100/110VAC.
All operations that involve voltage input selection
changes, or fuse replacement, must be done after
disconnecting the power cord from the mains.

AGD Productions, Inc.
AGD Tempo di GaN Stereo Power Amplifier Operating Manual_Rev1 Page. 18 of 20
12-Troubleshooting
Incorrect operation is sometimes mistaken for malfunction.
If problems occur, see this section for troubleshooting information. If
problems persist, contact your authorized AGD Productions’ dealer.
NO POWER
•Examine the power cord to ensure that it is connected to both the AC
mains connector and a working, un-switched, electrical outlet.
•Make sure the amplifier is powered on with the rear-panel power switch.
Examine the electrical circuit breaker to ensure that power is being
supplied to the electrical outlet to which the amplifier is connected.
•Make sure the amplifier is not in fault condition.
NO SIGNAL AT THE OUTPUTS
•Examine all audio cables to ensure a solid connection between the
amplifier and all associated components.
•Examine the speaker cables to ensure a solid connection between the
amplifier and the amplifiers.
•Make sure that the connected speakers are operational.
•Make sure the volume is set to an audible level.
•Make sure the preamp is not muted.
•Make sure all associated components are connected to working electrical
outlets and powered on.
•Make sure the source device connected to the amplifier’s selected input
is producing an output signal.
AUDIO HUM
Disconnect components one at a time to isolate the problem.
Once the problem is identified, make sure the problematic component is
properly grounded and connected to the same electrical socket as the
amplifier.
IF ALL ELSE FAILS…
Contact your authorized AGD Productions, Inc. Dealer and/or contact AGD
Productions Customer Service at www.AGDproductions.com.

AGD Productions, Inc.
AGD Tempo di GaN Stereo Power Amplifier Operating Manual_Rev1 Page. 19 of 20
13-CE Compliance Certificate
Statement of Compliance
Manufacturer : AGD Productions, Inc.
Palos Verdes Estates
90274 CA (USA)
Product name: AGD “TEMPO”
Power Amplifier
Standards : EN 55032 : 2015 Class-B
EN 61000-3-2 : 2014
EN 61000-3-3 : 2013
EN 55024: 2010
EN 60950-1: 2006 + /A11:2009/A1:2010 + /A2:2013 +
/A12:2011
The manufacturer declares that the product complies
with specified above and meets the essential
requirements of the Directive: 2014/30/UE (EMC),
2014/35/UE (LVD), 2011/65/UE (RoHS)
………………………………

AGD Productions, Inc.
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It’s “TEMPO”di GaN Now!