Gato Audio AMP-150 User manual

AMP-150 Integrated Amplifier
Anniversary Edition
User Manual

Gato Audio AMP-150 - Integrated Amplifier
Page 2

User Manual
Page 3
Contents
Don’t be a stranger 4
Package contents 4
Safety rst! 5
About the amplier 6
General design 6
Preamplier 6
Power amplier 6
Protection 6
Cooling control 6
Components 6
PCB design 6
Fine-tuning – by listening 6
Setting up your amplier 7
Basic connection 7
Overview 7
How does it work? 8
Power on 8
Standby 8
Adjusting the volume 8
Muting 8
Input selection 8
Display modes and dim 8
Direct 8
RC-4 Remote Control 9
How to insert/replace the battery 9
Functions 9
Make it last! 10
If all else fails… 10
Technical stu 11

Gato Audio AMP-150 - Integrated Amplifier
Page 4
Don’t be a stranger
Thank you for purchasing the Gato Audio AMP-150. We are absolutely condent that it will bring you many hours of listening pleasure.
We hereby cordially invite you to join the Gato Audio family by registering your product online. You may also consider signing up for our
newsletter to receive information about exciting new products, events and technical updates. We are also present on several social media
like Facebook, Twitter, Instagram, Google+ and LinkedIn.
All this and more on www.gato-audio.com
Our very best,
Gato Audio
Package contents
Please check that the following is included in the package:
• 1 Gato Audio AMP-150 Integrated Amplier
• 1 Mains Cable
• 1 Gato Audio RC-4 Remote Control
• CR2032 3 V battery
• This Manual - which you should be reading now 

User Manual
Page 5
Safety first!
Mains plug and cable:
• Insert the mains plug fully into the mains outlet socket
• Do not use any mains cable other than the one provided with this amplier
• Do not move the amplier around while it is connected to mains
• Do not place heavy objects on the mains cable or place the cable near high-temperature objects
• Do not use damaged mains plugs or socket outlets
Liquids:
Electricity and liquids is not a safe combination, therefore:
• When cleaning the amplier, remove the mains plug
• Do not handle the mains plug with wet hands
• Do not spray any liquid directly onto the amplier
• Do not place liquid containers above or near the amplier
• Keep liquids away from the amplier
…And:
• This is not a toy and should not be handled like one (by children OR adults)
• Do not remove the covers of the amplier (for service see page 10)
• Do not attempt to put foreign objects inside the amplier (for service see page 10)
• Do not cover the amplier with cloth or cover up the rear air vents in any way
• Do not place the amplier on sloped or unstable surfaces
• When the amplier will not be used for a long time, remove the mains plug
• Do not short the amplier outputs
• This unit is made for indoor temperature (15-25OC or 59-77 OF). If it has been exposed to cold temperature, let it adjust itself to indoor
temperature before use
• Make sure that your amplier is able to breathe by securing a minimum safe distance around the heat sinks of 100 mm
• The amplier can get hot during use. Normal operating temperature is from room temperature to 50OC or 122OF
100 mm 100 mm
AMP-150
Standby Display
dB
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0
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Gato Audio AMP-150 - Integrated Amplifier
Page 6
About the amplifier
General design
The main aim for the Gato Audio design team was to create the best sounding integrated amplier possible inside a compact exterior.
Secondly, we wanted to create a line of products where design was not simply a question of a good-looking face plate, but a more
complete product design that looks beautiful from every angle and expresses a classic electro-mechanical look.
The top cover in either real wood veneer or painted nish can be chosen to accommodate other design elements in your home or system.
Preamplier
Mounted on a separate PCB with a separate regulated power supply, the AMP-150’s preamplier is built up of super low-noise, high-
bandwidth analogue amplication and special signal relays originally developed to handle the delicacy of telecom signals. The location
close to the connectors adds several advantages, which include an extremely short signal path as well as remarkably low levels of noise
and distortion interference.
TwinFET Power Amplier
The input section features a bipolar input stage, a separate power supply for the critical driver circuit and a single set of unique high-
power MOSFET output devices able to handle current levels up to 300 amperes without using more than one transistor for each positive
and negative period. This combines loads of power with softness and the transparent sound of a good tube amplier.
Protection
We have incorporated several advanced and highly eective protection circuits in the output stage in order to protect your amplier and
the connected speakers from abuse and faults. Heat, current and DC are under constant surveillance by a microprocessor, which will shut
down the amplier if the accepted values are exceeded.
Cooling control
The AMP-150 features an advanced active cooling system to provide the most ecient cooling with the lowest noise possible. The system
measures music level and temperature level and processes data individually for each channel. The cooling system activates when music
is playing and will adjust the cooling level accordingly to the temperature level. When music stops the cooling system will lower into
minimum cooling mode and then go into standby when the amplier has been cooled to the idle temperature.
Components
Every single component in the AMP-150 must live up to not only stringent production tolerances and over specied values, but equally
importantly, it will not be selected before having been approved for its sonic capabilities through many intensive listening tests. Simply
put, if it does not sound right inside its circuitry environment, we cannot use it regardless of how good its measurement values are. This
is the only way to maintain a natural, crisp and clear soundstage. Most of the components are only working at 30% of their maximum
workload capacity under normal use. This will ensure your amplier a long life with a minimum of stress.
PCB design
The amplier is divided into three basic parts, each with a separate PCB. The rst is dedicated to the delicate small signals from the source,
input selection and volume control. The second consists of the mains power supply and high-power amplication, and the third is the
microprocessor board that controls the functions and display. All boards are produced from high-quality breglass base with a double-
sided thick copper layer.
Fine-tuning – by listening
The last 5% of ne-tuning and voicing is by far the most complicated and time consuming part of our development work. Single critical
components are replaced, and often voltage and current supplies need to be modied to accommodate them, and consequently, listening
starts all over again.
In addition, blind-test listening is used, not just using our own reference system but also in other setups, as measures we have taken to
complete this amplier just as comprehensively as every other product in our range.

User Manual
Page 7
Setting up your amplifier
Basic connection
Follow these steps for setting up your system:
1.Place your amplier as per the instructions on page 4
2.Connect all inputs to the amplier
3.Connect your loudspeakers to the amplier
4.Connect mains power to the amplier and turn it on
5.Select input and volume setting. Enjoy!
Overview
AMP-150
Standby Display
dB
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3
4
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1
7
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0
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Speaker
R
Mains
115/230 VAC 600W max T=6,3A/3,15A Only replace fuse with same type and rating
DO NOT REMOVE COVER. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
TO REDUCE THE RISK OF ELECTRICAL SHOCK OR FIRE, DO NOT EXPOSE THIS APPLIANCE TO MOISTURE OR RAIN.
+ +
Speaker
L
Neutral
Live
RR R
LL
RR
LLLL
RR
L
RCA out
CD LP Tuner
Bal inBal out
RCA out Bal inBal out
Tape
CD LP Tuner Tape
Made in
Denmark
Input selection knob
Right speaker
terminals
Left speaker
terminals
Mains
lead
Mains
switch
Balanced
input
Balanced
output
Ground LiveNeutral
RCA
output
RCA
inputs
Volume control knobStandby button Display button
dB
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Balanced
Inputs:
CD
LP
Tape
Radio
DirectMute
dB Read Out dB ScalePointer
Standby/Dim
LED
Display with volume and input indication

Gato Audio AMP-150 - Integrated Amplifier
Page 8
How does it work?
Power on
Use the mains switch on the back of the amplier to turn it on. The amplier is now in standby mode.
Standby
The amplier can exit and enter standby mode by pressing on the remote control or the Standby button on the front panel. Only the
microprocessor and the standby LED are powered during standby. Therefore, the AMP-150 has an ultra-low standby power consumption
of less than 1W.
Adjusting the volume
Turning the volume control knob clockwise increases the volume. Turn it
counter-clockwise to decrease the volume. The front panel display shows
the volume level.
Muting
For complete silence simply press the mute button on the remote control.
The mute indicator will turn on when muted. Press the mute button once
more to return to the previous volume level.
Input selection
Use the input selection knob to select input channel. You can turn the input
selection knob both clockwise and counter-clockwise endlessly. See the order
of the input channels when turning the knob in the two gures on the right.
Display modes and dim
The display can be set to two dierent display modes. One with analogue
and digital volume read out, and one where the display is dimmed. This
can be slected by pressing the Display button on the front panel.
Direct
The direct function bypasses the volume control turning this amplier into a power amplier. This can be very useful in surround setups.
To activate this mode, select the tape input and press and hold the Standby button on the amplier for 5 seconds. The display will
show the direct indicator .
To disable the Direct function, press and hold the Standby button again for 5 seconds.
This function can only be enabled and disabled on the amplier itself.
dB
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+10 db
- db
8
0 db
Counter
clockwise
Clockwise Input selection
Attenuation
Display with analogue &
digital read-out
Dimmed display
dB
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3
4
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1
7
,
5
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1
0
,
5
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5
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7
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User Manual
Page 9
RC-4 Remote Control
The RC-4 is an infrared remote control for the Gato Audio AMP-150 and CDD-1.
How to insert/replace the battery
The RC-4 runs on a standard CR2032 3 V button battery.
1.Remove the small lid on the bottom side of the remote
2.Insert or replace the CR2032 3 V button battery
3.Reinstall the small lid on the bottom side of the remote
Functions:
Standby
Mute
Volume up
Volume down
Next input channel
Previous input channel
Play/Pause
CD Input Select
Repeat
Stop
Next Track/Scan Forward
Previouse Track/Scan Backward
1-9/ 10+ Direct Track Selection
- Press the button to put the amplier in standby
-Press it again to turn it on
- Press the button to mute the amplier
-Press it again to return to the previous volume level
- Press the button to increase the volume
- Press the button to decrease the volume
- Press the button to select next input channel
- Press the button to select previous input channel
- Press to toggle between inputs on the CDD-1
- Press to set the CDD-1 in Repeat mode
- Press the button to top playing
- Press the button to select the next track
-Press and hold to scan forward
- Press the button to select previous track
-Press and hold to scan backward
+
These functions are not available on the AMP-150

Gato Audio AMP-150 - Integrated Amplifier
Page 10
Make it last!
Please apply simple common sense to maintain the sound quality and lifespan of your Gato Audio amplier. Here are a few guidelines:
• Regular care: wipe the surfaces carefully by using a clean soft dry cloth
• Cleaning: if necessary, wipe the hard surfaces clean using a soft cloth dampened only with clean water.
• Grease stains or nger marks can be removed carefully with a clean soft cloth lightly dampened in a mix of clean lukewarm water and
a single drop of household washing-up liquid. Then wipe the surfaces dry using a soft dry cloth
• Be careful never to use hot water or any type of concentrated detergent, solvent, thinner, or any other volatile substance on the
surfaces, or you may cause permanent damage to the surface coating
• Keep the cabinet away from prolonged contact with rubber or PVC materials
• Do not expose the amplier to direct sunlight or other heat sources
If all else fails…
…don’t panic! Every Gato Audio product comes with a minimum 2-year warranty. See our website for details.
This warranty does not cover damage or wear directly or indirectly caused by improper use, violence, tampering with or unauthorized
access to or servicing of any part of the product.
If you are in need of service or repair, please do not hesitate to contact us at [email protected]om or visit our website www.gato-audio.com
for more information.

User Manual
Page 11
Technical stuff
Technical specications
Output power (230 VAC)
Input impedance
Frequency response
Preamplier output impedance
Total Harmonic Distortion
Signal to Noise ratio A-weighted
Voltage gain
Recommended speaker load
Load protection
Connectors
Balanced analogue inputs
Unbalanced analogue inputs
Balanced analogue outputs
Unbalanced analogue outputs
Speaker output
Size & Power
Power Requirements
Fuse
Power Consumption
Dimensions (WxHxD)
Weight
2x 150 W RMS 8 Ω / 2x 250 W RMS 4 Ω
20 kΩ RCA or 40 kΩ Balanced
20 Hz-20 kHz ± 0.5 dB, and 2 Hz-100 kHz ± 3 dB
100 Ω RCA and 200 Ω Balanced
< 0,05 % at rated power
> 100 dB
27 dB (+10 db headroom)
4 Ω -16 Ω
Speakers < 1.5 Ω
1 pair gold-plated XLR Neutrik
4 pairs of gold-plated RCA stereo
1 pair gold-plated XLR Neutrik
1 pair of gold-plated RCA stereo
2 pairs of gold-plated safety banana
115 VAC or 230 VAC, 50 Hz or 60 Hz
20 mm sand lled, 6,3 AT@115 VAC, 3.15 AT@230 VAC
Standby <1 W, Idle < 40 W, Heat <200 W, Max is 600 W
325 x 105 x 430 mm / 12.8 x 4.1 x 16.9 “
13.8 Kg. / 30.4 lbs.

Gato Audio
Marielundvej 28
DK-2730 Herlev
Denmark
Phone: [phone]
www.gato-audio.com
[email protected]om
510035 GA AMP-150AE MAN 1.1 XXXX