Bakoon SATRI AMP-51R Manuale utente

SATRI AMPLIFIER AMP-51R

Owner’s Manual

SAFETY INSTRUCTIONS 4

INTRODUCTION 6

OVERVIEW (FRONT PANEL) 8

OVERVIEW (REAR PANEL) 9

OVERVIEW (REMOTE CONTROL) 1 1

OPERATION 12

TROUBLESHOOTING 13

SPECIFICATION 14

WARRANTY 15

SAFETY INSTRUCTIONS 4

INTRODUCTION 6

OVERVIEW (FRONT PANEL) 8

OVERVIEW (REAR PANEL) 9

OVERVIEW (REMOTE CONTROL) 1 1

OPERATION 12

TROUBLESHOOTING 13

SPECIFICATION 14

WARRANTY 15

contentscontents

1. Instructions

Thoroughly read through and follow all the safety instructions

stated below before operating or installing any items. It is also

important that you retain the instructions for future reference.

2. Placement

Place the product on a rigid rack or shelf speciﬁed to support the

weight of the product. Failure to do so may result in the shelf

breaking, tipping or the product to fall with the risk of causing

serious material and personal injury.

3. Ventilation

The product needs proper ventilation to ensure reliable opera-

tion. Do not place the product in an enclosed, non-ventilated area

such as in a bookcase or closed rack, and on a soft surface such

as sofa or bed.

4. Heat

Do not use the product near ﬂames, any heating appliances such

as radiators, stoves or any other audio ampliﬁers.

5. Water and Moisture

Do not place the product near any water such as ﬂower vases, air

conditionings or any installations of running water. Also, you may

not pour into nor use any kind of liquids on the product.

6. Cleaning

Disconnect the main plug before cleaning. Clean the product only

with a dry, soft, lint-free cloth or a vacuum cleaner. Do not use any

liquid or chemical cleaners.

7. Power Sources

The product must be connected to the type of power source

speciﬁed in the marking labels found on the packaging box or on

the back of the product. Do not modify the supplied power cable

in any way. Do not overload wall outlets, receptacles or extension

cords. Do not place the power cable where there is a risk that it

will be walked on, pinched, bent, exposed to heat or in any way

damaged.

1. Instructions

Thoroughly read through and follow all the safety instructions

stated below before operating or installing any items. It is also

important that you retain the instructions for future reference.

2. Placement

Place the product on a rigid rack or shelf speciﬁed to support the

weight of the product. Failure to do so may result in the shelf

breaking, tipping or the product to fall with the risk of causing

serious material and personal injury.

3. Ventilation

The product needs proper ventilation to ensure reliable opera-

tion. Do not place the product in an enclosed, non-ventilated area

such as in a bookcase or closed rack, and on a soft surface such

as sofa or bed.

4. Heat

Do not use the product near ﬂames, any heating appliances such

as radiators, stoves or any other audio ampliﬁers.

5. Water and Moisture

Do not place the product near any water such as ﬂower vases, air

conditionings or any installations of running water. Also, you may

not pour into nor use any kind of liquids on the product.

6. Cleaning

Disconnect the main plug before cleaning. Clean the product only

with a dry, soft, lint-free cloth or a vacuum cleaner. Do not use any

liquid or chemical cleaners.

7. Power Sources

The product must be connected to the type of power source

speciﬁed in the marking labels found on the packaging box or on

the back of the product. Do not modify the supplied power cable

in any way. Do not overload wall outlets, receptacles or extension

cords. Do not place the power cable where there is a risk that it

will be walked on, pinched, bent, exposed to heat or in any way

damaged.

SAFETY INSTRUCTIONS

All products from Bakoon International are strictly designed and manufactured to meet the most rigid safety standards.

It is important that owners should follow the below instructions to avoid any possible damages.

8. AC Power Connection

The product must be connected to the power outlet only with

the power cable that meets safety standards. Do not damage or

modify the products’ AC inlet connector or power cable in any

way. Do not overload wall outlets, receptacles or extension cords.

Please refer to the marking label for its AC input speciﬁcation.

Failure to do so will result in serious damage to the product or the

user and will void the warranty.

9. Damage Requiring Service

The product should be serviced by qualiﬁed service personnel if:

●

The power supply cable or plug has been damaged.

●

Objects have fallen or liquid has been spilled into the product.

●

The product has been exposed to rain or water.

●

The product does not operate normally or exhibits a clear

change in performance.

●

The product has been dropped or damaged in any way

10. Service

You should not attempt to service the product by yourself nor

may it be serviced by any unauthorized service personnel. Always

contact your dealer to arrange servicing. Failure to do so will void

the warranty.

Caution: You should never open the product in order to prevent

electric shock.

Warning: Do not place the product near any water such as ﬂower

vases, air conditionings or any installations of running water. Also,

you may not pour into nor use any kind of liquids on the product.

There is a risk of electric shock.

Caution: The product requires to be installed in a well ventilated

area. The product is designed to dissipate heat through all of its

surface areas, thus requiring at least 20 cm space on all sides. Do

not stack the ampliﬁer directly on top of or below other products.

8. AC Power Connection

The product must be connected to the power outlet only with

the power cable that meets safety standards. Do not damage or

modify the products’ AC inlet connector or power cable in any

way. Do not overload wall outlets, receptacles or extension cords.

Please refer to the marking label for its AC input speciﬁcation.

Failure to do so will result in serious damage to the product or the

user and will void the warranty.

9. Damage Requiring Service

The product should be serviced by qualiﬁed service personnel if:

●

The power supply cable or plug has been damaged.

●

Objects have fallen or liquid has been spilled into the product.

●

The product has been exposed to rain or water.

●

The product does not operate normally or exhibits a clear

change in performance.

●

The product has been dropped or damaged in any way

10. Service

You should not attempt to service the product by yourself nor

may it be serviced by any unauthorized service personnel. Always

contact your dealer to arrange servicing. Failure to do so will void

the warranty.

Caution: You should never open the product in order to prevent

electric shock.

Warning: Do not place the product near any water such as ﬂower

vases, air conditionings or any installations of running water. Also,

you may not pour into nor use any kind of liquids on the product.

There is a risk of electric shock.

Caution: The product requires to be installed in a well ventilated

area. The product is designed to dissipate heat through all of its

surface areas, thus requiring at least 20 cm space on all sides. Do

not stack the ampliﬁer directly on top of or below other products.

1. Instructions

Thoroughly read through and follow all the safety instructions

stated below before operating or installing any items. It is also

important that you retain the instructions for future reference.

2. Placement

Place the product on a rigid rack or shelf speciﬁed to support the

weight of the product. Failure to do so may result in the shelf

breaking, tipping or the product to fall with the risk of causing

serious material and personal injury.

3. Ventilation

The product needs proper ventilation to ensure reliable opera-

tion. Do not place the product in an enclosed, non-ventilated area

such as in a bookcase or closed rack, and on a soft surface such

as sofa or bed.

4. Heat

Do not use the product near ﬂames, any heating appliances such

as radiators, stoves or any other audio ampliﬁers.

5. Water and Moisture

Do not place the product near any water such as ﬂower vases, air

conditionings or any installations of running water. Also, you may

not pour into nor use any kind of liquids on the product.

6. Cleaning

Disconnect the main plug before cleaning. Clean the product only

with a dry, soft, lint-free cloth or a vacuum cleaner. Do not use any

liquid or chemical cleaners.

7. Power Sources

The product must be connected to the type of power source

speciﬁed in the marking labels found on the packaging box or on

the back of the product. Do not modify the supplied power cable

in any way. Do not overload wall outlets, receptacles or extension

cords. Do not place the power cable where there is a risk that it

will be walked on, pinched, bent, exposed to heat or in any way

damaged.

1. Instructions

Thoroughly read through and follow all the safety instructions

stated below before operating or installing any items. It is also

important that you retain the instructions for future reference.

2. Placement

Place the product on a rigid rack or shelf speciﬁed to support the

weight of the product. Failure to do so may result in the shelf

breaking, tipping or the product to fall with the risk of causing

serious material and personal injury.

3. Ventilation

The product needs proper ventilation to ensure reliable opera-

tion. Do not place the product in an enclosed, non-ventilated area

such as in a bookcase or closed rack, and on a soft surface such

as sofa or bed.

4. Heat

Do not use the product near ﬂames, any heating appliances such

as radiators, stoves or any other audio ampliﬁers.

5. Water and Moisture

Do not place the product near any water such as ﬂower vases, air

conditionings or any installations of running water. Also, you may

not pour into nor use any kind of liquids on the product.

6. Cleaning

Disconnect the main plug before cleaning. Clean the product only

with a dry, soft, lint-free cloth or a vacuum cleaner. Do not use any

liquid or chemical cleaners.

7. Power Sources

The product must be connected to the type of power source

speciﬁed in the marking labels found on the packaging box or on

the back of the product. Do not modify the supplied power cable

in any way. Do not overload wall outlets, receptacles or extension

cords. Do not place the power cable where there is a risk that it

will be walked on, pinched, bent, exposed to heat or in any way

damaged.

INTRODUCTION

Congratulations on becoming a happy owner of the SATRI AMP-51R.

The AMP-51R is our ﬁnest achievement to date, our next generation ﬂagship ampliﬁer, born from years of experience and

expertise in SATRI Circuit technology. Created with the highlighted features described below, the AMP-51R ensures the

best quality of music reproduction possible.

The All New Flagship SATRI Circuit

The AMP-51R uses our top-of-the-line SATRI-IC-UL and the latest

generation bias control circuit with a more stable current source

circuit that enhances the output stages’ performance. The circuit

is further enhanced by greatly reducing the signal paths and

interference between the components. The latest high power

MOSFETs from EXICON are implemented together with the

exclusive driver circuit which enables a more stable output stage

performance.

Advanced Control Circuit

An all new control circuit contributes to the AMP-51R’s stability by

automatically protecting itself from AC input changes, DC output

and high temperature. It also detects the voltage ﬂuctuations and

controls the power supplies accordingly, so that the ampliﬁer

runs from a stable power supply at all times. An OLED display

shows all the current status of the AMP-51R, and all operation of

the unit is done by two hidden knobs underneath the front panel

or with the remote controller.

Ultra Precision Stepped Attenuator Circuit

The Ultra Precision Stepped Attenuator is implemented for the

ﬁrst time in a Bakoon ampliﬁer, with only the best available high

precision resistors with 0.1% tolerance and 25 PPM/°C tempera-

ture coecient. The circuit is completely controlled by the micro-

processor unit (MPU) and it can be set in 50 steps, ensuring the

best possible channel balance and signal purity.

Ultra Low Noise Power Supply

Three separate power transformers are used for the input stages,

output stages and control stages. For the ﬁrst time in a Bakoon’s

ampliﬁer, a custom-made transformer from Plitron, boasting the

lowest possible noise level. The power supply circuit also employs

separate ultra-low noise regulator circuits to provide reliable

power for the AMP-51R’s high precision circuits.

The All New Flagship SATRI Circuit

The AMP-51R uses our top-of-the-line SATRI-IC-UL and the latest

generation bias control circuit with a more stable current source

circuit that enhances the output stages’ performance. The circuit

is further enhanced by greatly reducing the signal paths and

interference between the components. The latest high power

MOSFETs from EXICON are implemented together with the

exclusive driver circuit which enables a more stable output stage

performance.

Advanced Control Circuit

An all new control circuit contributes to the AMP-51R’s stability by

automatically protecting itself from AC input changes, DC output

and high temperature. It also detects the voltage ﬂuctuations and

controls the power supplies accordingly, so that the ampliﬁer

runs from a stable power supply at all times. An OLED display

shows all the current status of the AMP-51R, and all operation of

the unit is done by two hidden knobs underneath the front panel

or with the remote controller.

Ultra Precision Stepped Attenuator Circuit

The Ultra Precision Stepped Attenuator is implemented for the

ﬁrst time in a Bakoon ampliﬁer, with only the best available high

precision resistors with 0.1% tolerance and 25 PPM/°C tempera-

ture coecient. The circuit is completely controlled by the micro-

processor unit (MPU) and it can be set in 50 steps, ensuring the

best possible channel balance and signal purity.

Ultra Low Noise Power Supply

Three separate power transformers are used for the input stages,

output stages and control stages. For the ﬁrst time in a Bakoon’s

ampliﬁer, a custom-made transformer from Plitron, boasting the

lowest possible noise level. The power supply circuit also employs

separate ultra-low noise regulator circuits to provide reliable

power for the AMP-51R’s high precision circuits.

INTRODUCTION

Congratulations on becoming a happy owner of the SATRI AMP-51R.

The AMP-51R is our ﬁnest achievement to date, our next generation ﬂagship ampliﬁer, born from years of experience and

expertise in SATRI Circuit technology. Created with the highlighted features described below, the AMP-51R ensures the

best quality of music reproduction possible.

Extreme Mechanical Engineering

Bakoon’s expertise in mechanical engineering delivers a precise,

yet beautifully ﬁnished case design – both inside and out. In order

to transfer heat from the circuits more eciently, there are two

CNC machined copper heatsink blocks inside. Also, various

heatsink patterns are machined throughout the exterior surfaces.

The case itself is stabilized by three isolation feet, designed and

positioned from meticulous calculations for the best

anti-vibration performance.

Packaging

Inside the packaging box, you will ﬁnd the below contents;

●

AMP-51R Ampliﬁer

●

Remote Controller

●

Remote Controller Battery Replacement Toolkit

●

Owner’s Manual / Safety Instruction

●

A Pair of Gloves

The original packaging box has been created to carefully protect

its contents.

Please do not throw away the box in case of possible shipments

in the future.

Extreme Mechanical Engineering

Bakoon’s expertise in mechanical engineering delivers a precise,

yet beautifully ﬁnished case design – both inside and out. In order

to transfer heat from the circuits more eciently, there are two

CNC machined copper heatsink blocks inside. Also, various

heatsink patterns are machined throughout the exterior surfaces.

The case itself is stabilized by three isolation feet, designed and

positioned from meticulous calculations for the best

anti-vibration performance.

Packaging

Inside the packaging box, you will ﬁnd the below contents;

●

AMP-51R Ampliﬁer

●

Remote Controller

●

Remote Controller Battery Replacement Toolkit

●

Owner’s Manual / Safety Instruction

●

A Pair of Gloves

The original packaging box has been created to carefully protect

its contents.

Please do not throw away the box in case of possible shipments

in the future.

➊

INPUT SELECT

Underneath the front panel, there is a knob with which you can switch

between and select input sources. Rotate it left or right swiftly, but

gently, to change the input. During the input change, the gain level is

automatically changed to zero (mute), after which it is then returned

to its last position step.

➋

POWER & GAIN

The power and gain control is combined with one single knob. With

the AC power cable plugged in, the AMP-51R goes into standby mode

with a separate standby transformer inside the unit. In standby mode,

rotating the knob swiftly to right will turn on the ampliﬁer and rotating

it further to right will increase its gain level (or volume). Rotating it to

left will decrease its gain level and at the minimum gain level, or step 0,

rotating it swiftly further to left will turn o the unit and put the

ampliﬁer back into standby mode.

Remarks: The latest generation bias circuit inside the AMP-51R stabilizes

its bias level during the initial turn-on period for about 12 seconds.

During this period, the AMP-51R is in mute mode with no signal output.

➌

OLED DISPLAY

The OLED display, will always display the current status of the AMP-

51R’s, and any changes made, the given text will show up at the

display. Also, should the AMP-51 enter into any protection mode, such

as problems from output DC, AC input or high temperature, this will

also be shown on the display.

➍

IR SENSOR

The small IR sensor located next to the OLED display receives the

remote controller’s signal. Be careful not to block its way.

➊

INPUT SELECT

Underneath the front panel, there is a knob with which you can switch

between and select input sources. Rotate it left or right swiftly, but

gently, to change the input. During the input change, the gain level is

automatically changed to zero (mute), after which it is then returned

to its last position step.

➋

POWER & GAIN

The power and gain control is combined with one single knob. With

the AC power cable plugged in, the AMP-51R goes into standby mode

with a separate standby transformer inside the unit. In standby mode,

rotating the knob swiftly to right will turn on the ampliﬁer and rotating

it further to right will increase its gain level (or volume). Rotating it to

left will decrease its gain level and at the minimum gain level, or step 0,

rotating it swiftly further to left will turn o the unit and put the

ampliﬁer back into standby mode.

Remarks: The latest generation bias circuit inside the AMP-51R stabilizes

its bias level during the initial turn-on period for about 12 seconds.

During this period, the AMP-51R is in mute mode with no signal output.

➌

OLED DISPLAY

The OLED display, will always display the current status of the AMP-

51R’s, and any changes made, the given text will show up at the

display. Also, should the AMP-51 enter into any protection mode, such

as problems from output DC, AC input or high temperature, this will

also be shown on the display.

➍

IR SENSOR

The small IR sensor located next to the OLED display receives the

remote controller’s signal. Be careful not to block its way.

OVERVIEW (FRONT PANEL)

➋➊

➌➍

OVERVIEW (REAR PANEL)

➊

➋

➌

➊

AC POWER INLET

The AC POWER INLET contains an AC power receptacle (IEC

standard) and a fuse holder. Securely connect the AC power cable

here. When replacing the fuse, be sure to use the same type and

value speciﬁed on the marking label.

➋

MARKING LABEL

The MARKING LABEL is located under the power inlet. It describes

AC main voltage, power consumption, fuse type and value. Make

sure you check this label carefully before the installation.

Remarks: The AMP-51R incorporates an AC voltage sensing circuit

that detects incoming AC voltage and its according DC output to

automatically help select the AC transformer primary inputs, during

the start-up and when it’s running.

This ensures the best performance at any given AC condition, but if

the AC voltage is either too low (less than 10%) or too high (higher

than 5%), the AMP-51R’s protection circuit will automatically turn o

the ampliﬁer.

➌

LOUDSPEAKER OUTPUT

When playing in the stereo mode, you can connect a pair of loud-

speaker cables to the connectors according to + and – markings.

When playing in mono mode (with two AMP-51Rs), the right channel’s

+ becomes its mono + output and the left channel’s + becomes it

mono – output. Be careful not to touch and make contacts between

any of these connectors during the installation, as this would pose a

risk of damaging the ampliﬁer and the loudspeakers.

➊

AC POWER INLET

The AC POWER INLET contains an AC power receptacle (IEC

standard) and a fuse holder. Securely connect the AC power cable

here. When replacing the fuse, be sure to use the same type and

value speciﬁed on the marking label.

➋

MARKING LABEL

The MARKING LABEL is located under the power inlet. It describes

AC main voltage, power consumption, fuse type and value. Make

sure you check this label carefully before the installation.

Remarks: The AMP-51R incorporates an AC voltage sensing circuit

that detects incoming AC voltage and its according DC output to

automatically help select the AC transformer primary inputs, during

the start-up and when it’s running.

This ensures the best performance at any given AC condition, but if

the AC voltage is either too low (less than 10%) or too high (higher

than 5%), the AMP-51R’s protection circuit will automatically turn o

the ampliﬁer.

➌

LOUDSPEAKER OUTPUT

When playing in the stereo mode, you can connect a pair of loud-

speaker cables to the connectors according to + and – markings.

When playing in mono mode (with two AMP-51Rs), the right channel’s

+ becomes its mono + output and the left channel’s + becomes it

mono – output. Be careful not to touch and make contacts between

any of these connectors during the installation, as this would pose a

risk of damaging the ampliﬁer and the loudspeakers.

OVERVIEW (REAR PANEL)

➍

➎

➎ ➎

➍

INPUT (STEREO)

There are two sets of conventional voltage inputs (RCA) and two

sets of SATRI-LINK inputs (BNC). Conventional source components

are compatible with the RCA voltage inputs. The SATRI-LINK is used

exclusively for source components by Bakoon.

Remarks: SATRI-LINK is a current signal transfer method between

electronics. It can transfer the signals at very long distances and the

input signal goes directly into the SATRI Circuit without any loss in

signal quality.

➎

INPUT (MONO)

The AMP-51R can be converted to play in mono mode. During its

mono mode, the XLR connector is used for any conventional balanced

voltage source and two BNC connectors, namely the SATRI-2LINK,

are used for Bakoon’s source with balanced current output. In mono

mode, the AMP-51R’s gain level is ﬁxed, requiring that any connected

sources in turn are equipped with a volume controller. (Alternatively

through a preampliﬁer)

Remarks: The XLR connector’s pin 1 is ground, pin 2 is hot and pin 3

is cold.

Remarks: Do not connect any stereo inputs during the mono mode.

➍

INPUT (STEREO)

There are two sets of conventional voltage inputs (RCA) and two

sets of SATRI-LINK inputs (BNC). Conventional source components

are compatible with the RCA voltage inputs. The SATRI-LINK is used

exclusively for source components by Bakoon.

Remarks: SATRI-LINK is a current signal transfer method between

electronics. It can transfer the signals at very long distances and the

input signal goes directly into the SATRI Circuit without any loss in

signal quality.

➎

INPUT (MONO)

The AMP-51R can be converted to play in mono mode. During its

mono mode, the XLR connector is used for any conventional balanced

voltage source and two BNC connectors, namely the SATRI-2LINK,

are used for Bakoon’s source with balanced current output. In mono

mode, the AMP-51R’s gain level is ﬁxed, requiring that any connected

sources in turn are equipped with a volume controller. (Alternatively

through a preampliﬁer)

Remarks: The XLR connector’s pin 1 is ground, pin 2 is hot and pin 3

is cold.

Remarks: Do not connect any stereo inputs during the mono mode.

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