Page 1
Quick Tour
You must read the Usage and Safety Precautions before use.
The Operation Manual can be downloaded from the ZOOM website (www.zoom.jp/docs/ams-44).
This page has les in PDF and HTML formats.
The PDF le format is suitable for printing on paper and reading on a computer.
The HTML le format is suitable for smartphones and tablets and can be read with web browsers.
© 2021 ZOOM CORPORATION
Copying or reprinting this manual in part or in whole without permission is prohibited.
You might need this manual in the future. Always keep it in a place where you can access it easily.
The contents of this manual and the specifications of the product could be changed without notice.
Page 2
Connecting to a computer
USB Type-C
( A USB cable that supports data
transmission must be used.)
To use USB bus power, set the
BATTERY switch to OFF.
Conrm that the power indicator is lit red.
Computer
(Mac/Windows)
A dedicated driver is necessary when connecting an AMS-44 to a Windows computer to
make music using a DAW.
Dedicated drivers can be downloaded from product pages on the ZOOM website
(zoomcorp.com). Follow the instructions in the “Product driver installation guide” to
install the ZOOM AMS-44 Driver.
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Page 3
Setting the MUSIC/STREAMING switch
Set this according to the use of the USB audio signal path.
MUSIC: Good for making music with a DAW, for example
AMS-44
INPUT 1
INPUT 2
INPUT 3
INPUT 4
OUTPUT A OUTPUT 1/2
OUTPUT B OUTPUT 3/4
Computer, smartphone or tablet
STREAMING: Good for web streaming
AMS-44
INPUT 1
INPUT 2
INPUT 3
INPUT 4
OUTPUT A OUTPUT 1/2
OUTPUT B OUTPUT 3/4
When the AMS-44 Stereo Link switch is on, INPUT 3 (left) and INPUT4 (right)
function as a stereo input.
L
R
Computer, smartphone or tablet
Connecting instruments and mics
INPUT 1
INPUT 2
INPUT 3
INPUT 4
INPUT 1
INPUT 2
INPUT 3
INPUT 4
DAW
Web
streaming
Guitar Bass
Instrument cable
Input type switch (INPUT 1 only)
■
Use when connecting
passive guitars or basses
Use when connecting a mic
or keyboard, for example
Mic cable
Instrument/TRS cables
48V switch (INPUT 1–4)
■
3
Dynamic mic
Condenser mic
Keyboard
Use when connecting
condenser mics
Use when connecting
dynamic mics
Page 4
Adjusting input gain
To minimize noise, set the gain for any input not being used to 0.
Using direct monitoring
When the DIRECT MONITOR switch is ON, sound input to the AMS-44 can
be directly monitored from the OUTPUT A and B jacks (before it passes
through the computer).
When stereo link is on, sounds from INPUTS 3 and 4 can be monitored in stereo.
Adjusting the volume
Set these so that their level
indicators do not light red.
Speakers
Headphones
Headphones
4
Page 5
Functions of parts
Top
■
POWER indicator
①
This lights when the power is on. This
blinks when the remaining battery
charge is low.
Input type switch
②
Set this according to the equipment
connected to INPUT 1.
Stereo Link switch
③
Turn this on when inputting a stereo
signal through INPUTS 3–4. INPUT 3
will become the left signal while INPUT
4 will become the right signal. When the
Stereo Link switch is on, the input gain
for both Inputs 3 and 4 is controlled by
Gain knob 3.
Gain knobs
④
Use these to adjust input signal levels.
Level indicators
⑤
These indicators show signal levels after
gain knob adjustments.
The indicator colors change according to
the signal levels.
Lit green: Input signal present.
Lit red: Input signal is clipping.
Bottom
■
MUSIC/STREAMING switch
⑥
This switches between MUSIC and
STREAMING modes. Set it to MUSIC
when using the AMS-44 to make music
with a DAW, for example. Set it to
STREAMING when using it to stream on
the web, for example.
OUTPUT A knob
⑦
Use this to adjust the volumes of the
signals output from the OUTPUT A
standard phone jacks and the Headphones A jack.
OUTPUT B knob
⑧
Use this to adjust the volume of the signals output from the Headphones B jack.
Battery cover
⑨
Slide this to remove it when loading
batteries.
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Page 6
Left side
XLR
12
3
■
Right side
■
BATTERY switch
①
Set this to ON to use battery power.
Set this to OFF to use USB bus power or
an external power supply.
48V switch
②
This turns +48V phantom power ON/
OFF. Set this to ON when connecting
condenser mics. Phantom power is
supplied to INPUTS 1–4 simultaneously.
Front
■
INPUT jacks 1–4
①
These input jacks have built-in mic preamps. Connect mics, keyboards, guitars
and other audio sources to these. These
can be used with both XLR and standard
phone (balanced or unbalanced) plugs.
1: GND
2: HOT
3: COLD
DIRECT MONITOR switch
③
Set this to ON to directly monitor sounds
from the INPUT jacks before they pass
through the computer.
LOOPBACK switch
④
Set this to ON to send a mix of the
sounds played by the computer and
input through the AMS-44 back to the
computer.
Back
■
OUTPUT A standard phone jacks
③
These output the left (L) and right (R)
channels of a stereo signal. Connect
these to speakers with built-in ampliers,
for example.
USB port (Type-C)
④
Use this USB port to connect computers,
smartphones and tablets.
DC 5V port (Type-C)
⑤
Use this power supply USB port to connect an AC adapter or mobile battery.
Headphone output jacks A–B
②
These output stereo signals. Connect
headphones to these.
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Page 7
Using smartphones and tablets
During use with a smartphone or tablet, an external power supply or batteries must be used.
Preparing an external power supply or batteries
Using an external power supply
■
Dedicated AC adapter
ZOOM AD-17
USB Type-C
Selecting the power supply
Using an external power supply
(commercially-available USB
mobile batteries can be used.)
Using batteries
■
Using batteries
Conrm that the power indicator is lit red.
Connecting
USB Type-C
( A USB cable that supports data
transmission must be used.)
To connect smartphones and tablets, USB cables and adapters that match the connectors
are necessary.
Connector type Necessary USB cable/adapter
Lightning connector USB Type-A to Type-C cable, Lightning to USB 3 Camera Adapter
Type-C connector USB Type-C to Type-C cable
Smartphone/
tablet
7
Page 8
Troubleshooting
Cannot select or use the AMS-44 device
→Conrm that the AMS-44 has been connected
correctly on the computer.
→Quit all software that is using the AMS-44. Then,
disconnect and reconnect the USB cable connected to the AMS-44.
→Connect the AMS-44 directly to a USB port on the
Computer. Do not connect it using a USB hub.
→When connecting to a Windows computer, install-
ing the dedicated driver can resolve problems
with applications other than DAWs.
→Reinstall the driver.
The sounds of devices connected to input
jacks are distorted, too quiet or silent
→When using a condenser mic, set the 48V switch
to ON.
→Conrm that level indicators are not lighting red. If
they are lighting red, lower their gain knobs.
→Adjust the gain knobs.
→Adjust the OUTPUT knobs.
Cannot play or record
→Conrm that the sound setting of the computer
being used is set to "ZOOM AMS-44".
→Conrm that AMS-44 is set for input and output in
the software being used.
→Quit all software that is using the AMS-44. Then,
disconnect and reconnect the USB cable connected to the AMS-44.
Playback sound cannot be heard or is quiet
→Check the connections and volume settings of the
speakers.
→Adjust the OUTPUT knobs.
Recorded audio is too loud, too quiet or
silent
→Adjust the gain knobs.
A smartphone or tablet cannot be used
→Conrm that the external power supply is con-
nected or that batteries are loaded correctly.
→When using batteries, set the BATTERY switch to
ON.
Sound skips during playback or recording
→If the audio buffer size of the software being used
can be adjusted, increase it.
→Turn off the automatic sleep function and other
computer power saving settings.
→Connect the AMS-44 directly to a USB port on the
computer. Do not connect it using a USB hub.
Product names, registered trademarks and company names in this document are the property of their respective companies.
®
is a trademark or registered trademark of Microsoft® Corporation. Mac is a trademark or registered trademark of
Windows
Apple Inc.
All trademarks and registered trademarks in this document are for identification purposes only and are not intended to infringe
on the copyrights of their respective owners.
ZOOM CORPORATION
4-4-3 Kanda-surugadai, Chiyoda-ku, Tokyo 101-0062 Japan
zoomcorp.com
Z2I-4416-01
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