Operation Manual

© 2016 ZOOM CORPORATION

Copying or reprinting this manual in part or in whole without permission is prohibited.
 Contents

Introduction ………………………………………… 2 Playback …………………………………………… 14

Safety and Usage Precautions ………………… 3 Connecting MIDI Devices ………………………… 18
Part Names ………………………………………… 4 Troubleshooting …………………………………… 19
Connecting with a Computer/iPad ……………… 6 Specifications ……………………………………… 20
Recording …………………………………………… 11 Signal Flow Diagrams …………………………… 21

Introduction
Thank you for choosing the ZOOM Handy Audio Interface. To achieve the best results—and to protect your
investment—please read this manual carefully and retain it for future reference. Use this product only as directed.

2-in/4-out Audio Interface

The ZOOM is a high quality audio interface that supports audio recording and playback at resolutions up to 24-
bit/96 kHz.
Featuring an asynchronous transfer system, is not impacted by computer jitter, and reproduces audio with
complete accuracy.
can be used with computers running Windows and Mac OS X, as well as with an iPad.

High-Performance Mic Preamps

is equipped with high-performance mic preamps that are based on the same design as our H-Series Handy
Recorders.
+48V phantom power can be supplied to each input. INPUT 1 also supports Hi-Z input.

Designed with the DJ in Mind

The features 2 RCA outputs that make it easy to connect to DJ mixers or other devices. The balance between
computer playback signals 1-2 and 3-4 can be adjusted for the LINE OUT 2 and PHONES outputs.
For example, you can balance the PHONES output between click and MAIN OUT signals during a live performance. Or
you can balance between the cue and MAIN OUT signals during a DJ performance.
Plus, the PHONES jack delivers enough volume output for use in clubs and other small venues.

2
 Safety and Usage Precautions

Safety Precautions Usage Precautions

In this operation manual, symbols are used to highlight Interference with other electrical equipment
warnings and cautions that you must read to prevent For safety considerations, is designed to minimize the emission
accidents. The meanings of these symbols are as follows. of electromagnetic waves and suppress interference from external
electromagnetic waves. However, interference could still occur if is
placed next to equipment that is very susceptible to interference of that
Something that could cause serious injury or
emits powerful electromagnetic waves. If this occurs, place the and
Warning death the other device farther apart.
With any type of digital control device—including the —
electromagnetic interference can cause malfunction, corrupt or destroy
Something that could cause injury or damage to
data, or cause other unexpected issues. Always exercise caution.
Caution the equipment Cleaning
Other symbols used Use a soft cloth to clean the exterior of the unit if it becomes dirty. If necessary,
use a damp cloth that has been wrung out well to wipe it.
An action that is mandatory Never use abrasive cleansers, wax or solvents such as alcohol, benzene or paint
thinner.
An action that is prohibited Temperature considerations
The may become warm after long periods of continuous use. This is
normal, as long as the unit does not become too hot to touch.
Warning
Warning Breakdown and malfunction
Alterations
If the malfunctions or operates abnormally, disconnect it
Do not open the case or modify the product.
immediately. Contact the store where you purchased the unit, or
Operation using an AC adapter contact ZOOM customer service with the following information: product
Never use any AC adapter other than a ZOOM AD-17. model, serial number, and the specific symptoms of the breakdown or
Always hold the AC adapter itself when disconnecting it from an outlet. malfunction—along with your name, address, and telephone number.
Operation with external DC power supply Copyrights
Use a 5V external DC power supply. t
Windows® is a registered trademark of Microsoft® Corporation.
Carefully study the warning indications of the external DC power supply t
Mac®, iPad® and Lightning™ are trademarks or registered trademarks
before use. of Apple Inc.
Operation using batteries t
MIDI is a registered trademark of Association of Musical Electronics
Use 2 ordinary 1.5-volt AA batteries (alkaline or nickel-metal hydride). Industry (AMEI).
Read battery warning labels carefully. t
Other product names, registered trademarks and company names in
Always close the battery compartment cover when using the unit. this document are the property of their respective companies.
Note: All trademarks and registered trademarks in this document are for
Caution identification purposes only and are not intended to infringe on the
Warning copyrights of their respective owners.
Product handling
Do not drop, bump or appl y excessive force to the unit. Recording for any purpose other than personal use from copyrighted
Be careful not to allow foreign objects or liquids to enter the unit. sources, including CDs, records, tapes, live performances, video works
Battery handling and broadcasts, without permission of the copyright holder is prohibited
by law.
Install the batteries with the correct +/− orientation.
ZOOM Corporation will not assume any responsibility related to
Use a specified battery type.
Do not mix new and old batteries or different brands or types at the same infringements of copyrights.
time.
When not using the unit for an extended period of time, remove the FCC regulation warning (for U.S.A.)
batteries.
This equipment has been tested and found to comply with the limits
If a battery leak should occur, wipe the battery compartment and the
for a Class B digital device, pursuant to Part 15 of the FCC Rules. These
battery terminals carefully to remove all residue.
limits are designed to provide reasonable protection against harmful
Operating environment interference in a residential installation. This equipment generates, uses,
Do not use in extremely high or low temperatures. and can radiate radio frequency energy and, if not installed and used in
Do not use near heaters, stoves and other heat sources. accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will
Do not use in very high humidity or where it could be splashed by water.
not occur in a particular installation. If this equipment does cause harmful
Do not use in places with frequent vibrations.
interference to radio or television reception, which can be determined by
Do not use in places with much dust or sand. turning the equipment off and on, the user is encouraged to try to correct
Connection cables and input/ output jacks the interference by one or more of the following measures:
Always turn the power OFF for all equipment before connecting any cables. • Reorient or relocate the receiving antenna.
Always disconnect all connection cables and the AC adapter before moving • Increase the separation between the equipment and receiver.
the unit. • Connect the equipment to an outlet on a circuit different from that to
which the receiver is connected.
Volume • Consult the dealer or an experienced radio/TV technician for help.
Do not use at a loud volume for a long time.
For EU Countries

Declaration of Conformity

3
 Part Names

Top

MAIN OUT jacks LINE OUT 1 jacks

INPUT 1 jack
Hi-Z switch
Level indicators LINE OUT 2 jacks

PHANTOM switch PHONES jack

GAIN knobs BALANCE knob

INPUT 2 jack

MAIN OUT knob PHONES knob

DIRECT MONITOR knob

MUTE switches
Power indicator

XLR TRS

2 1 TIP: HOT
1: GND RING: COLD
2: HOT SLEEVE: GND
3 3: COLD

4
Part Names (continued)

Left side

POWER switch

Back

MIDI OUT jack USB 2.0 port

MIDI IN jack DC 5V connector

5
 Installing the Driver

Do not connect the until installation completes.

Windows

1. Download the ZOOM U-24 Driver from http://www.zoom.co.jp/downloads/ to

your computer.
NOTE
t
:PV
DBO
EPXOMPBE
UIF
MBUFTU
;00.
6
ESJWFS
GSPN
UIF
BCPWF
XFCTJUF
t
%PXOMPBE
UIF
ESJWFS
GPS
UIF
PQFSBUJOH
TZTUFN
UIBU
ZPV
BSF
VTJOH

2. Launch the installer and install the driver.

'PMMPX
UIF
JOTUSVDUJPOT
UIBU
BQQFBS
PO
TDSFFO
UP
JOTUBMM
UIF
;00.
6
ESJWFS

NOTE
t
4FF
UIF
*OTUBMMBUJPO
(VJEF
JODMVEFE
JO
UIF
ESJWFS
QBDLBHF
GPS
EFUBJMFE
JOTUBMMBUJPO
QSPDFEVSFT

Mac
Driver installation is not necessary when using a Mac.

6
 Choosing a Power Source

Using bus power

Use a USB cable to connect the to the computer.

<Back>

Using batteries

1. Open the battery cover on the bottom.

2. Install the batteries.

3. Replace the battery cover.

NOTE
t
6TF
POMZ
BMLBMJOF
CBUUFSJFT
PS
SFDIBSHFBCMF
/J.)
CBUUFSJFT
t
5IF
QPXFS
JOEJDBUPS
XJMM
CMJOL
XIFO
UIF
CBUUFSZ
DIBSHF
CFDPNFT
MPX
5VSO
UIF
QPXFS
PGG
JNNFEJBUFMZ
BOE
JOTUBMM
OFX

batteries.

Using an external power supply

Connect either the optional AD-17 adapter, a commercially available USB power adapter, or
a mobile USB battery to the DC 5V connector.
<Back>

7
Connecting with a Computer

1. Minimize the volume of any output devices that are currently connected to the
.

2. Use a USB cable to connect the to the computer.

<Back>

3. Set to USB or BATTERY/DC IN to turn the power on.

NOTE

t
8IFO
VTJOH
CBUUFSJFT
PS
BO
FYUFSOBM
QPXFS
TVQQMZ
TFU


UP
#"55&3:%$
*/

4. Confirm that the power indicator is lit.

8
 iPad Connection

:PV
DBO
DPOOFDU
UIF
to an iPad when using either the optional AD-17 power adapter,
an external DC power supply, or AA batteries.

1. Minimize the volume of any output devices that are currently connected to the
.

2. Install batteries or connect an external power supply. (→ P. 7)

3. Connect the and the iPad using an Apple iPad Camera Connection Kit or
Lightning to USB Camera Adapter.
<Back>

4. Set to BATTERY/DC IN. <Left side>

After the turns on, it will connect to the iPad.

NOTE
t cannot accept bus power from an iPad.

5. Confirm that the power indicator is lit.

9
5VSOJOH
UIF
1PXFS
0GG

1. Minimize the volume of any output devices that are currently connected to the
.

2. Turn off amps, monitor speakers, and any other output equipment that is
currently connected to the .

3. Set to OFF.

10
 Connecting Instruments

*OTUSVNFOUT
DBO
CF
DPOOFDUFE
UP
*/1654

VTJOH
534
PS
NPOP
JOTUSVNFOU
DBCMFT

Guitar Bass guitar

(mono instrument cable)

Keyboard
(TRS cable)

Using the Hi-Z Function

t
5IF
)J;
GVODUJPO
DBO
POMZ
CF
VTFE
XJUI
*/165

t
8IFO
DPOOFDUJOH
B
HVJUBS
PS
CBTT
XJUI
QBTTJWF
QJDLVQT
VTF
*/165


and turn on ( ).
t
8IFO
DPOOFDUJOH
B
LFZCPBSE
PS
PUIFS
JOTUSVNFOU
DPOOFDU
JU
UP
*/165

1 and turn off (


PS
DPOOFDU
JU
UP
*/165


11
 Connecting Mics

.JDT
DBO
CF
DPOOFDUFE
UP
*/1654

VTJOH
9-3
DBCMFT

Dynamic mic
(XLR cable)

Condenser mic
(XLR cable)

Using Phantom Power

t When using a condenser mic, turn on ( ).
t
8IFO
PO
QIBOUPN
QPXFS
JT
TVQQMJFE
UP
CPUI
*/1654

BOE


12
 "EKVTUJOH
*OQVU
(BJO

:PV
DBO
BEKVTU
UIF
HBJO
PG
FBDI
JOQVU

1. Check the status of the input signal.

(SFFO
MJHIU
*OQVU
TJHOBM
JT
QSFTFOU

3FE
MJHIU
*OQVU
TJHOBM
JT
DMJQQJOH

2. Adjust the input gain.

5VSO
UIF
.

HINT
t
5P
BWPJE
EJTUPSUFE
BVEJP
BEKVTU
UIF
JOQVU
HBJO
TP
UIF
MFWFM
JOEJDBUPS
EPFTOhU
MJHIU
VQ
SFE

13
 $POOFDUJOH
)FBEQIPOFT
BOE
4QFBLFST

$POOFDU
IFBEQIPOFT
UP
UIF
1)0/&4
KBDL
TQFBLFST
UP
UIF
."*/
065
KBDLT
BOE
BEKVTU

the volume levels accordingly.

1. Connect headphones or speakers.

Speakers

Headphones

2. Adjust the headphones/speakers volume.

)FBEQIPOFT
WPMVNF
5VSO
.

4QFBLFST
WPMVNF
5VSO .

NOTE
t
5IF
-*/&
065

KBDLT
EFMJWFS
UIF
TBNF
TJHOBM
PVUQVU
BT
UIF
."*/
065
KBDLT

t
5IF
-*/&
065

KBDLT
EFMJWFS
UIF
TBNF
TJHOBM
PVUQVU
BT
UIF
1)0/&4
KBDL

t
5IF
-*/&
065

BOE

WPMVNF
MFWFMT
DBOU
CF
DIBOHFE

t
5IF
."*/
065-*/&
065

KBDLT
EFMJWFS
PVUQVU
GSPN
DPNQVUFS
QMBZCBDL
TJHOBMT

t
5IF
1)0/&4-*/&
065

KBDLT
EFMJWFS
PVUQVU
GSPN
UIF
BEKVTUFE
CBMBODF
PG
DPNQVUFS
QMBZCBDL
TJHOBMT

BOE

→ P. 17)

14
 Muting Outputs

5IF
PVUQVUT
PG
DIBOOFMT
"
."*/
065-*/&
065


BOE
#
1)0/&4-*/&
065


DBO
CF

muted/unmuted.

1. Press for the channel you want to mute.

-JU
.VUFE
6OMJU
/PU
NVUFE

15
 Using Direct Monitoring

Direct monitoring enables you to listen to input signals before they pass through the
DPNQVUFS
5IJT
BMMPXT
ZPV
UP
IFBS
UIF
TPVOE
DPNJOH
JOUP
UIF
without latency.

1. Turn to adjust the balance between the

audio input and the computer playback
signals.

16
 Adjusting the Computer Playback Signal Balance

5IF
CBMBODF
CFUXFFO
DPNQVUFS
QMBZCBDL
TJHOBMT

BOE

DBO
CF
BEKVTUFE
GPS
UIF
-*/&

065

BOE
1)0/&4
PVUQVUT

'PS
FYBNQMF
ZPV
DBO
CBMBODF
UIF
1)0/&4
PVUQVU
CFUXFFO
DMJDL
USBDL
BOE
."*/
065

TJHOBMT
EVSJOH
B
MJWF
QFSGPSNBODF
0S
ZPV
DBO
CBMBODF
CFUXFFO
UIF
DVF
BOE
."*/
065

signals during a DJ performance.
Live performance
DAW software
MAIN OUT Speakers
［1-2］ 30％

Click track Headphones

［3-4］
70％

DJ performance
DAW software
MAIN OUT Speakers
［1-2］ 50％

Cue audio Headphones

［3-4］
50％

1. Turn to adjust the balance between

computer playback signals 1-2 and 3-4.

NOTE
t
$PNQVUFS
QMBZCBDL
TJHOBMT

BSF
PVUQVU
GSPN
UIF
."*/
065-*/&

065

KBDLT

17
 Connecting MIDI Devices

6TF
.*%*
DBCMFT
UP
DPOOFDU
.*%*
EFWJDFT
UP
UIF
.*%*
*/
BOE
.*%*
065
KBDLT

<Back>

MIDI OUT jack MIDI IN jack

Sound module

MIDI IN jack

MIDI keyboard or
MIDI controller

MIDI OUT jack

NOTE
t
8IFO
ZPV
DPOOFDU
UIF
to a DAW using a MIDI port, follow the instructions below to ensure proper connectivity
and functionality.
<Windows>

6TF
;00.
6
%SJWFS
%P
OPU
VTF
.*%*
*/065

;00.
6
%SJWFS

<Mac>

6TF
;00.
6
.*%*
*0
1PSU
%P
OPU
VTF
;00.
6
3FTFSWFE
1PSU

18
 5SPVCMFTIPPUJOH

Cannot select or use the device Sound skips during playback or recording

t
Confirm that the is connected to the t
If you can adjust the audio buffer size of the
computer correctly. software that you are using, increase the buffer
t
Quit all the software that is using the , size.
and disconnect and reconnect the USB cable t
5VSO
UIF
BVUPNBUJD
TMFFQ
GVODUJPO
BOE
PUIFS

connected to the . computer power saving settings OFF.
t
Reinstall the driver. t
Connect the directly to a USB port on the
t
Connect the directly to a USB port on the computer. Do not connect it to a USB hub.
computer. Do not connect it to a USB hub. Cannot play or record
Playback sound cannot be heard or is quiet t
Confirm that the Sound setting of the computer
t
Check the speaker connections and volume UIBU
ZPV
BSF
VTJOH
JT
TFU
UP
;00.
6
settings on the speakers. t
Confirm that is set for input and output in
t
"EKVTU
UIF
065165
BOE
1)0/&4
WPMVNF
the software you are using.
controls. t
C o n f i r m t h a t is connected to the
t
Confirm that the Sound setting of the computer computer correctly.
UIBU
ZPV
BSF
VTJOH
JT
TFU
UP
;00.
6 t
Quit all software that is using the , then
t
"EKVTU
UIF
%*3&$5
.0/*503
LOPC disconnect and reconnect the T
64#

cable.
t
If no sound can be heard or the volume is low
GSPN
UIF
1)0/&4-*/&
065

PVUQVUT
BEKVTU
Cannot use with an iPad
UIF
#"-"/$&
LOPC
t
Confirm that the batteries are loaded or the
Recorded audio is too loud, too quiet or external power supply is connected correctly.
silent (→ P. 7)

t
Adjust the input gain of the . t
4FU
UIF
108&3
TXJUDI
UP
#"55&3:%$
*/
UP

turn the power on.
t
When using a condenser mic, turn phantom
power on.
t
C o n f i r m t h a t t h e S o u n d s e tt i n g o f t h e
computer that you are using is set to "ZOOM
6

The sound of the device connected to the

input jack is distorted

t
Confirm that the level indicators are not lighting

red. If they are, lower the input levels.

19
 Specifications

ANALOG IN INPUT 1/2 Connector TRS/XLR combo jacks

(XLR: 2 hot, TRS: TIP hot)
Input gain 0 – 43 dB
Input impedance 2.6 kΩ (MIC IN)
1.1 MΩ (when Hi-Z ON)
Maximum input level +2.7 dBu (MIC IN)/+20.7 dBu (TRS IN)
Phantom power +48 V
ANALOG OUT MAIN OUT L/R Connector TRS phone jacks (unbalanced)
Maximum output level +10 dBu (at 0 dBFS)
Output impedance 330 Ω
LINE OUT 1/2 Connector RCA (coaxial)
Maximum output level +8 dBu (at 0 dBFS)
Output impedance 1 kΩ
PNONES Connector Standard stereo phone jack
30 mW x 2 (into 32 Ω load)
Maximum output level +10 dBu (at 0 dBFS)
Output impedance 33 Ω
Frequency characteristics At 44.1 kHz: -1.0 dB: 20 Hz - 20 kHz
At 96 kHz: -3.5 dB: 20 Hz - 40 kHz
Input conversion noise Measured EIN: -119.5 dB (IHF-A)
(with 43 dB, 150 Ω input)
Number of audio recording and playback channels Recording: 2 channels
Playback: 4 channels
Sampling frequencies 96 kHz, 88.2 kHz, 48 kHz, 44.1 kHz
Bit depth 24 bit
Interface USB2.0
MIDI IN/OUT 5 pin DIN jack
Power Source USB bus power (Type B)/ZOOM AD-17 (Micro-B)/DC 5 V power supply
(Micro-B)/2 AA batteries (about 4 hours continuous operation with
phantom power off)
Power consumption 5 W maximum
Dimensions 191.8 mm (D) ×92.3 mm (W) ×42.7 mm (H)
Weight (main unit only) 285 g
* 0 dBu = 0.775 Vrms
/PUF
5IF
DPOUJOVPVT
PQFSBUJPO
UJNF
XJUI
CBUUFSJFT
JT
KVTU
BO
FTUJNBUF
5IJT
SFTVMU
JT
GSPN
JOIPVTF
UFTUJOH
NFUIPET
5IF
BDUVBM
UJNF
XJMM
WBSZ
HSFBUMZ

according to operating conditions.

20
 Signal Flow Diagrams
48V

DIRECT
LEVEL MONITOR
INDICATOR INPUT OUTPUT OUTPUT
1 2 1 2 3 4 1 2 3 4

Hi-Z/
Gain INPUT1
Lo-Z
INPUT1
AD

Gain INPUT2

INPUT2

INPUT1
-6dB

INPUT2
-6dB

MAIN OUT
VOLUME

MAIN OUT L
DA
MAIN OUT R
To Computer

From Computer

A
MUTE
SWITCH A
LINE OUT 1 L

LINE OUT 1 R

PHONES
VOLUME

DA PHONES

MUTE

B
SWITCH B LINE OUT 2 L

BALANCE LINE OUT 2 R

21
 ZOOM CORPORATION
4-4-3 Kandasurugadai, Chiyoda-ku, Tokyo 101-0062 Japan
http://www.zoom.co.jp

Z2I-2597-0