Soundbarrier iUSB400 User manual

VERSION 1.0
2X2 USB Audio Interface with Preamplifier, Phantom Power, and Instrument Input
INSTRUCTION MANUAL
MANUAL DE INSTRUCCIONES

Explanation of Graphical Symbols
The lightning flash with arrowhead symbol within an equilateral
triangle is intended to alert the user to the presence of uninsulated
‘dangerous voltage’ within the product’s enclosure that may be of
sufficient magnitude to constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is intended to alert
the user to the presence of important operating and maintenance
(servicing) instructions in the literature accompanying the product.
IMPORTANT SAFETY INSTRUCTIONS
1
2
3
4
5
6
7
8
9
Read these instructions.
Keep these instructions.
Heed all warnings.
Follow all instructions.
Do not use this apparatus near water.
Clean only with dry cloth.
Do not block any ventilation openings. Install in accordance with the
manufacturer’s instructions.
Do not install near any heat sources such as radiators, heat registers,
stoves, or other apparatus (including amplifiers) that produce heat.
Do not defeat the safety purpose of the polarized or grounding-type
plug. A polarized plug has two blades with one wider than the other.
A grounding type plug has two blades and a third grounding prong.
The wide blade or the third prong are provided for safety. If the
provided plug does not fit into your outlet, consult an electrician for
replacement of the obsolete outlet.
10
11
12
13
14
Protect the power cord from being walked on or pinched particularly at
plugs, convenience receptacles, and the point where they exit from the
apparatus.
Only use attachments/accessories specified by the
manufacturer.
Use only with the cart, stand, tripod, bracket, or table
specified by the manufacturer, or sold with the
apparatus. When a cart is used, use caution when
moving the cart/apparatus combination to avoid
injury from tip-over.
Unplug this apparatus during lightning storms or when unused for long
periods of time.
Refer all servicing to qualified service personnel. Servicing is required
when the apparatus has been damaged in any way, such as power-supply
cord or plug is damaged, liquid has been spilled or objects have fallen into
the apparatus, the apparatus has been exposed to rain or moisture, does not
operate normally, or has been dropped.
WARNING
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE.
PLEASE READ CAREFULLY BEFORE PROCEEDING
Please keep this manual in a safe place for future reference.
WARNING
Always follow the basic precautions listed below to avoid the possibility of serious injury or even death from electrical shock, short-circuiting, damages,
fire or other hazards. These precautions include, but are not limited to, the following:
Power supply/Power cord
Water warning
•Only use the voltage specified as correct for the device. The required
voltage is printed on the name plate of the device.
•Do not expose the device to rain, use it near water or in damp or wet
conditions, or place containers on it containing liquids which might
spill into any openings.
•Use only the included power cord.
•Never insert or remove an electric plug with wet hands.
•Do not place the power cord near heat sources such as heaters or radiators,
do not excessively bend or otherwise damage the cord, place heavy objects
on it, or place it in a position where anyone could walk on, trip over, or roll
anything over it.
If you notice any abnormality
•If the power cord or plug becomes frayed or damaged, there is a
sudden loss of sound during use of the device, or any unusual smells
or smoke should appear, turn off the power switch, disconnect the
electric plug from the outlet immediately, and have the device
inspected by qualified service personnel.
Do not open
•Do not open the device or attempt to disassemble the internal parts or
modify them in any way. The device contains no user-serviceable parts. If
it should appear to be malfunctioning, discontinue use immediately and
have it inspected by qualified service personnel.
•If this device is dropped or damaged, immediately turn off the power
switch, disconnect the electric plug from the outlet, and have the
device inspected by qualified service personnel.
•Do not open the device or attempt to disassemble the internal parts or
modify them in any way. The device contains no user-serviceable parts. If
it should appear to be malfunctioning, discontinue use immediately and
have it inspected by qualified service personnel.
PRECAUTIONS
BEFORE OPENING
PULL MAIN PLUG
CAUTION VORSICHT
VOR DEM OFFNEN
NETZSTECKER ZIEHEN
CAUTION:TO REDUCE THE RISK OF FIRE REPLACE WITH
ONLY SAME TYPE AND RATING OF FUSE
WARNING:

WARNING
Always follow the basic precautions listed below to avoid the possibility of physical injury to you or others, or damage to the device or other property. These
precautions include, but are not limited to, the following:
Power supply/Power cord
Connections
•Remove the electric plug from the outlet when the devices is not
to be used for extend periods of time, or during electrical storms.
•Before connecting the device to other devices, turn off the power for
all devices. Before turning the power on or off for all devices, set all
volume levels to minimum.
When removing the electric plug from the device or an outlet,
always hold the plug itself and not the cord. Pulling by the cord
can damage it.
For the SPEAKERS jacks, Use only the included speakers and speaker
cables. Use of other types of speakers and cables may result in damage
to the device(s), or even fire.
Location
Handling Precautions
When transporting or moving the device, always use two or more
people. Attempting to lift the device by yourself may damage your
back, result in other injury, or cause damage to the device itself.
Before moving the device, remove all connected cables.
When setting up the device, make sure that the AC outlet you are using
is easily accessible. If some trouble or malfunction occurs,
immediately turn off the power switch and disconnect the plug from
the outlet.
Do not use the device in a confined, poorly ventilated location. Make
sure that there is adequate space between the mixer and surrounding
walls or other devices: at least 1’ ft. at the side, 1’ ft. behind and 1’
ft. above. If the mixer is to be used installed into the speaker cabinet,
make sure to allow adequate space between the speaker and the
surrounding walls or other devices: at least 1’ ft. at the sides, 1’
ft. behind and 1’ ft. above. Inadequate ventilation can result in
overheating, possibly causing damage to the device(s), or even fire.
Do not use the speaker’s handles for suspended installation. Doing so
could result in damage or personal injury.
Avoid setting all equalizer controls and faders to their maximum.
Depending on the condition of the connected devices, doing so may
cause feedback and may damage the speakers.
Do not expose the device to excessive dust or vibrations, or extreme
cold or heat (such as in direct sunlight, near a heater, or in a car during
the day) to prevent the possibility of panel disfiguration or damage to
the internal components.
Do not place the device in an unstable position where it might
accidentally fall over.
Do not block the vents. This mixer has ventilation holes at the top to
prevent the internal temperature from becoming too high. In
particular, do not place the device on its side or upside down.
Inadequate ventilation can result in overheating, possibly causing
damage to the device(s), or even fire.
Do not use the device in the vicinity of a TV, radio, stereo equipment,
mobile phone, or other electric devices. Doing so may result in noise,
both in the device itself and in the TV or radio next to it.
When turning on the AC power in your audio system, always turn on the
device LAST, to avoid speaker damage. When turning the power off, the
device should be turned off FIRST for the same reason.
Do not insert your fingers or hands in any gaps or openings on the device
(vents, ports, etc.).
Avoid inserting or dropping foreign objects (paper, plastic, metal, etc.) into
any gaps or openings on the device (vents, ports, etc.). If this happens, turn
off the power immediately and unplug the power cord from the AC outlet.
Then have the device inspected by qualified service personnel.
Do not use the device for a long period of time at a high or uncomfortable
volume level, since this can cause permanent hearing loss. If you experience
any hearing loss or ringing in the ears, consult a physician immediately.
Do not operate the device if the sound is distorting. Prolonged use in this
condition could cause overheating and result in fire.
Do not rest your weight on the device or place heavy objects on it, and avoid
use excessive force on the buttons, switches or connectors.
Protective Circuit (poly switch)
All full-range loudspeakers are fitted with a self-resetting poly switch that
protects the high-frequency driver from damage caused by excessive power.
If a loudspeaker cabinet loses high-frequency output, immediately remove
power from the unit and wait for two to three minutes. This should be long
enough to allow the poly switch to reset. Reapply power and check the
performance of the high frequency driver before continuing, with the power
reduced to a level that does not cause the poly switch to interrupt the signal.
Interference From Cell Phone
Using a cell phone near the speaker system can induce noise. If this occurs,
move the cell phone further away from the speaker system. Air blowing out
of the bass reflex ports is normal, and often occurs when the speaker is
handing program material with heavy bass content.
Always turn the power off when the device is not in use. The performance of
components with moving contacts, such as switches, volume controls, and
connectors, deteriorates over time. Consult qualified service personnel about
replacing defective parts.
The manufacturer will not be responsible for damage caused by
improper use or modification to the device.

Explicación de los símbolos gráficos
El símbolo del rayo con punta de flecha dentro de un triángulo equilátero pretende alertar al usuario de la presencia de "voltaje peligroso" no
aislado dentro del envolvente del producto que puede ser de una magnitud suficiente para constituir un riesgo de descarga eléctrica para las
personas.
El signo de exclamación dentro de un triángulo equilátero pretende alertar al usuario de la presencia de instrucciones importantes de operación y
mantenimiento (servicio) en la documentación que acompaña al producto.
INSTRUCCIONES DE SEGURIDAD IMPORTANTES
1 Lea estas instrucciones.
2 Guarde estas instrucciones.
3 Preste atención a todas las advertencias.
4 Siga todas las instrucciones.
5 No utilice este aparato cerca del agua.
6 Limpiar solamente con un paño seco.
7 No bloquee las aberturas de ventilación. Haga la instalación
conforme a las instrucciones del fabricante.
8 No instale cerca de fuentes de calor como radiadores, registros de
calor, estufas u otros aparatos (incluidos amplificadores) que
produzcan calor.
9 No anule el propósito de seguridad del enchufe polarizado o con
conexión a tierra. Un enchufe polarizado tiene dos cuchillas, una más
ancha que la otra. Un enchufe con conexión a tierra tiene dos patas y
una tercera clavija de conexión a tierra. La cuchilla ancha o la tercera
clavija se proporcionan por seguridad. Si el enchufe provisto no
encaja en su toma de corriente, consulte a un electricista para
reemplazar la toma de corriente obsoleta.
10 Evite que el cable de alimentación se pise o se pellizque,
especialmente en los enchufes, receptáculos de conveniencia y el punto en
el que salen del aparato.
11 Utilice únicamente los accesorios especificados
por el fabricante..
12 Utilícelo solo con un carrito, soporte, trípode,
soporte o mesa especificado por el fabricante o
vendido con el aparato. Cuando se usa un carrito,
tenga cuidado al mover la combinación de carrito /
aparato para evitar lesiones por vuelco.
13 Desenchufe este aparato durante las tormentas eléctricas o cuando no
se utilice durante largos períodos de tiempo.
14 Remita todo el servicio a personal de servicio calificado. El servicio
se requiere cuando el aparato se ha dañado de alguna forma, como si el
cable de alimentación o el enchufe estuvieran dañados, si se hubiera
derramado líquido o si hubiera caído algún objeto dentro del aparato, el
aparato haya estado expuesto a la lluvia o la humedad, no funciona
normalmente, o se ha caído.
POR FAVOR LEA CUIDADOSAMENTE ANTES DE CONTINUAR
Guarde este manual en un lugar seguro para futuras consultas.
AVISO
Siga siempre las precauciones básicas enumeradas a continuación para evitar la posibilidad de lesiones graves o incluso la muerte por descarga eléctrica,
cortocircuito, daños, incendios u otros peligros. Estas precauciones incluyen, entre otras, las siguientes:
Fuente de alimentación / cable de alimentación
Advertencia de agua
• Utilice únicamente el voltaje especificado como correcto para el
dispositivo. El voltaje requerido está impreso en la placa de identificación
del dispositivo.
• No exponga el dispositivo a la lluvia, utilícelo cerca del agua o en
condiciones húmedas o mojadas, ni coloque recipientes sobre él que
contengan líquidos que puedan derramarse en las aberturas.
• Utilice únicamente el cable de alimentación incluido.
• Nunca inserte o quite un enchufe eléctrico con las manos mojadas.
• No coloque el cable de alimentación cerca de fuentes de calor, como
calentadores o radiadores, no doble excesivamente ni dañe el cable, coloque
objetos pesados sobre él o colóquelo en una posición en la que alguien
pueda caminar, tropezar o hacer rodar algo encima de eso.
Si nota alguna anomalía.
• Si el cable de alimentación o el enchufe se deshilachan o se dañan,
se produce una pérdida repentina de sonido durante el uso del
dispositivo, o si aparecen olores o humos inusuales, apague el
interruptor de alimentación, desconecte el enchufe eléctrico de la toma
de corriente inmediatamente, y haga inspeccionar el dispositivo por
personal de servicio calificado.
No abrir
• No abra el dispositivo ni intente desmontar las partes internas ni
modificarlas de ninguna manera. El dispositivo no contiene partes
reparables por el usuario. Si parece que no funciona correctamente, deje de
usarlo inmediatamente y haga que lo revise personal de servicio calificado.
• Si este dispositivo se cae o se daña, apague inmediatamente el
interruptor de alimentación, desconecte el enchufe del tomacorriente
e inspeccione el dispositivo por personal de servicio calificado.
• No abra el dispositivo ni intente desmontar las partes internas ni
modificarlas de ninguna manera. El dispositivo no contiene partes
reparables por el usuario. Si parece que no funciona correctamente, deje de
usarlo inmediatamente y haga que lo revise personal de servicio calificado.
PRECAUCIONES

AVISO
Siga siempre las precauciones básicas que se enumeran a continuación para evitar la posibilidad de lesiones físicas a usted u otras personas o daños al
dispositivo u otros bienes. Estas precauciones incluyen, entre otras, las siguientes:
Fuente de alimentación / cable de alimentación
Conexiones
• Retire el enchufe eléctrico de la toma de corriente cuando no
vaya a utilizar los dispositivos durante períodos prolongados de
tiempo o durante tormentas eléctricas.
• Antes de conectar el dispositivo a otros dispositivos, apague la
alimentación de todos los dispositivos. Antes de encender o apagar la
alimentación de todos los dispositivos, configure todos los niveles de
volumen al mínimo.
Cuando retire el enchufe eléctrico del dispositivo o de una toma
de corriente, siempre sostenga el enchufe y no el cable. Tirar del
cable puede dañarlo.
Para las tomas SPEAKERS, use solo los altavoces y los cables
incluidos. El uso de otros tipos de altavoces y cables puede dañar el
dispositivo o incluso el fuego.
Ubicación
Precauciones de Manejo
Cuando transporte o mueva el dispositivo, utilice siempre dos o más
personas. Intentar levantar el dispositivo por sí mismo puede dañar su
espalda, provocar otras lesiones o dañar el propio dispositivo.
Antes de mover el dispositivo, retire todos los cables conectados.
Al configurar el dispositivo, asegúrese de que se pueda acceder
fácilmente a la toma de CA que está utilizando. Si ocurre algún
problema o falla, apague inmediatamente el interruptor de
alimentación y desconecte el enchufe de la toma de corriente.
No utilice el dispositivo en lugares confinados y con poca ventilación.
Asegúrese de que haya espacio suficiente entre el mezclador y las
paredes circundantes u otros dispositivos: al menos 1 pie por lado, 1
pie por detrás y 1 pie por encima. Si la mezcladora se va a usar
instalada en el gabinete del altavoz, asegúrese de dejar un espacio
adecuado entre el altavoz y las paredes circundantes u otros
dispositivos: al menos 1 'pies a los lados, 1' pies por detrás y 1 'pies.
encima. La ventilación inadecuada puede provocar un
sobrecalentamiento, lo que podría causar daños al dispositivo (o
dispositivos) o incluso un incendio.
No utilice las asas del altavoz para la instalación suspendida. Si lo
hace, podría provocar daños o lesiones personales.
Evite configurar todos los controles de ecualizador y faders a su
máximo. Dependiendo de la condición de los dispositivos conectados,
hacerlo puede causar retroalimentación y dañar los altavoces.
No exponga el dispositivo a polvo o vibraciones excesivas, ni a frío o
calor extremos (como a la luz solar directa, cerca de un calefactor o
en un automóvil durante el día) para evitar la posibilidad de
desfiguración del panel o daños a los componentes internos.
No coloque el dispositivo en una posición inestable en la que pueda
caerse accidentalmente.
No bloquee las rejillas de ventilación. Esta mezcladora tiene orificios
de ventilación en la parte superior para evitar que la temperatura
interna sea demasiado alta. En particular, no coloque el dispositivo de
lado ni boca abajo. La ventilación inadecuada puede provocar un
sobrecalentamiento, lo que podría causar daños al dispositivo (o
dispositivos) o incluso un incendio.
No utilice el dispositivo cerca de un televisor, una radio, un equipo de
sonido, un teléfono móvil u otros dispositivos eléctricos. Si lo hace,
puede producir ruido, tanto en el propio dispositivo como en el
televisor o la radio que se encuentra junto a él.
Cuando encienda la alimentación de CA en su sistema de audio, siempre
encienda el dispositivo ÚLTIMO, para evitar daños al altavoz. Al apagar la
unidad, el dispositivo debe apagarse PRIMERO por la misma razón.
No inserte los dedos ni las manos en los huecos o aberturas del dispositivo
(ventilaciones, puertos, etc.).
Evite insertar o dejar caer objetos extraños (papel, plástico, metal, etc.) en
los huecos o aberturas del dispositivo (respiraderos, puertos, etc.). Si esto
sucede, apague la unidad inmediatamente y desenchufe el cable de
alimentación de la toma de CA. Luego haga inspeccionar el dispositivo por
personal de servicio calificado.
No utilice el dispositivo durante un largo período de tiempo a un nivel de
volumen alto o incómodo, ya que esto puede causar una pérdida permanente
de la audición. Si experimenta alguna pérdida de audición o zumbidos en los
oídos, consulte a un médico inmediatamente.
No opere el dispositivo si el sonido está distorsionado. El uso prolongado en
esta condición podría causar un sobrecalentamiento y provocar un incendio.
No apoye su peso sobre el dispositivo ni coloque objetos pesados sobre él, y
evite ejercer una fuerza excesiva sobre los botones, interruptores o
conectores.
Circuito de protección
Todos los altavoces de rango completo están equipados con un interruptor de
polietileno de auto-restablecimiento que protege al conductor de alta
frecuencia de los daños causados por un exceso de energía. Si el gabinete de
un altavoz pierde la salida de alta frecuencia, quite inmediatamente la
alimentación de la unidad y espere de dos a tres minutos. Esto debería ser lo
suficientemente largo para permitir que el interruptor de polietileno se
reinicie. Vuelva a aplicar la energía y verifique el rendimiento del
controlador de alta frecuencia antes de continuar, con la energía reducida a
un nivel que no haga que el interruptor de polietileno interrumpa la señal.
Interferencia del teléfono celular
El uso de un teléfono celular cerca del sistema de altavoces puede provocar
ruido. Si esto ocurre, aleje el teléfono celular del sistema de altavoces. El aire
que sale de los puertos de reflejo de bajos es normal y ocurre a menudo
cuando el orador entrega material de programa con contenido de graves
pesados.
Siempre apague la unidad cuando el dispositivo no esté en uso. El
rendimiento de los componentes con contactos móviles, como interruptores,
controles de volumen y conectores, se deteriora con el tiempo. Consulte al
personal de servicio calificado sobre la sustitución de piezas defectuosas.
El fabricante no será responsable de los daños causados por el
uso indebido o la modificación del dispositivo.

Overview
1.1 Introduction
Thank you for purchasing the Sound Barrier iUSB400. Sound Barrier has designed the IUSB400 utilizing
high-grade components to ensure optimum performance that will last a lifetime. Loaded with 2 high-
headroom, microphone preamplifiers; professional 24-bit 96 kHz converters; a built-in 2x2 USB 2.0
recording and playback engine; MIDI I/O; and more, IUSB400 breaks new boundaries for music
performance and production. All you need is a computer with a USB connection, a few microphones and
cables, powered speakers, and your instruments, and you are ready to record in the studio or in front of a
live audience! We encourage you to contact us with questions or comments regarding this product. Sound
Barrier Audio Electronics is committed to constant product improvement, and we value your suggestions
highly. We believe the best way to achieve our goal of constant product improvement is by listening to the
real experts: our valued customers. We appreciate the support you have shown us through the purchase
of this product and are confident that you will enjoy your IUSB400! About This Manual: We suggest that
you use this manual to familiarize yourself with the features, applications, and correct connection
procedures for your IUSB400 before trying to connect it to your computer. This will help you avoid
problems during installation and setup. Throughout this manual you will find Power User Tips that can
quickly make you an IUSB400 expert. In addition to the Power User Tips, you will find an assortment of
audio tutorials at the back of this manual. These tutorials cover everything from microphone placement to
equalizer and compression-setting suggestions.
1.2 Hardware Features
• 24-bit/96 kHz sampling rate
• 2 microphone preamplifiers
• 2 Instrument inputs
• MIDI I/O
• 2x2 USB 2.0 audio interface
• Headphone output
• Analog monitor mixing with playback/input mix control
• Rugged steel chassis
• Compatible with popular audio applications
• Compatible with all major audio applications
• macOS®- and Windows®-compatible

Connection
Front-Panel Connections and Controls
1) Microphone/Instrument Inputs: Both channels of the IUSB400 have Mic/Instrument combo jacks. This
convenient connector accepts either a ¼-inch phone plug or an XLR plug.
The XLR inputs on channels 1 and 2 are equipped with two microphone preamplifiers. These preamps
work great with all types of microphones including dynamic, ribbon, and condenser microphones.
Power User Tip: Dynamic microphones and ribbon microphones (which are a special type of dynamic mic) are generally
lower-output devices that, with few exceptions, require no external power source. Sending phantom power to a ribbon
mic that does not require it can cause severe damage to the mic – usually beyond repair. Condenser microphones are
generally more sensitive than dynamic and ribbon microphones and typically require external +48V phantom power.
Always review your microphone’s documentation and follow its recommended operating practices.
The ¼-inch TS connectors on channels 1 and 2 are for use with instruments (guitar, bass, etc.).
Power User Tip: Active instruments are those that have an internal preamp or a line-level output. Active instruments
should be plugged into a D.I. box, which should then be connected to the mic input rather than directly to an instrument
input. Plugging a line-level source into the instrument inputs on the front of the IUSB400 not only risks damage to
these inputs but can also result in a very loud and often distorted audio signal.

Please note: As with any audio input device, plugging in a microphone or an instrument, or turning phantom
power on or off, will create a momentary spike in the audio output of your IUSB400. Because of this, we highly
recommend that you turn down the main output level and channel trims before changing connections or turning
phantom power on or off. This simple step will add years to life of your audio equipment.
2) 48-volt Phantom Power. The IUSB400 provides 48V phantom power for both microphone inputs.
Press the 48V button to enable phantom power for both microphone inputs.
WARNING: Phantom power is only required for condenser microphones and can severely damage some dynamic
mics, especially ribbon mics. Please consult your microphone’s documentation before enabling phantom power
on your IUSB400.
3) Input Gain/Trim Control. These knobs provide the following gain structure: • Microphone: 60 dB of
variable gain (0 to +60 dB) • Instrument: 40 dB of variable gain (-10 dB to +30 dB)
4) Clip Indicator. All channels feature clip LEDs next to the trim controls. The red clip indicator LED will
illuminate when the channel’s input signal reaches 0 dBFS. At this level, your mic preamp/line trim
signal will exhibit signs of clipping (distortion).
Power User Tip: Never run your input levels higher than the channel inputs can handle. If you overdrive the analog-to-
digital converters, it will cause digital distortion (digital clipping), which sounds terrible and cannot be undone.
5) Mixer. The Mixer knob allows you to blend your input signals with the playback streams from your
computer so that you can monitor your input signals without any latency (delay). If the knob is
positioned at 12 o’clock, the input signal and the playback stream will be equally balanced. Turning
the knob to the left will increase the level of the input signal relative to the playback stream; turning to
the right will increase the level of the playback stream relative to the input signal as illustrated below:
Power User Tip: When monitoring your inputs through Studio One or another DAW, it is important that you turn the
Mixer knob all the way to the Playback position. Monitoring both the input signal and the playback stream will create
a doubling effect that will make monitoring difficult.
6) Phones. The Phones knob controls the volume of the headphone output on the rear of the unit. The
headphone amplifier is quite powerful, and the volume goes to 11, so use the maximum setting with
extreme caution.
7) Main. The Main knob controls the output level for the Main Outputs on the back of the IUSB400, with a
range of -80 dB to 10 dB.
8) Power LED. This LED will illuminate red when the IUSB400 is properly powered and synced to a USB
connection.
Rear-Panel Connections
9) ¼-inch Phones (headphone) Jack. This is where you connect headphones to your IUSB400.

10) Main Out. These are the main outputs for the IUSB400. The output level of the Main Outs is controlled
by the Main volume knob on the front of the unit.
Power User Tip: You must connect speakers or headphones directly to your iUSB400 in order to monitor playback from
your computer.
11) MIDI I/O. MIDI stands for “Musical Instrument Digital Interface.” MIDI inputs and outputs allow
connection to, and communication with, external MIDI equipment. One function of these ports is MIDI
sequencing but the MIDI protocol can be used for much more than instruments and sequencing.
Power User Tip: MIDI is not audio but is frequently used to trigger or control an audio source (such as a plug-in or
synthesizer). It’s important to ensure that your MIDI data is correctly sent and received by the appropriate hardware
or software devices. If the devices generate audio, you may also need to return the audio to an IUSB400 input channel.
Please consult the User Manuals of your MIDI devices for help with MIDI setup and usage.
12) USB Port. This is where you connect the USB cable from your IUSB400 to your computer. The
IUSB400 is bus-powered via this connection and does not require an external power supply. Your
iUSB400 is compatible with both USB 2.0 and 3.0 ports.

CONNECTION
Note: The speed of your processor, amount of RAM, and capacity, size, and speed of your hard drives will greatly affect the overall performance of
your recording system. A faster processor and more RAM can reduce signal latency (delay) and improve overall performance.
You can use your Sound Barrier iUSB400 with almost any audio-recording application that supports Core
Audio or ASIO. Please consult the documentation that came with your audio application for specific
instructions on how to select a compatible driver as the audio-device driver for your software.
Compatible Operation Systems:
Windows
·Windows XP SP2 or later, Windows Vista, Windows 7or later (32- and 64-bit)
·Intel Pentium 41.6 GHz processor or AMD Athlon 64 (Turion) (2.5 GHz or faster recommended)
·1 GB RAM (2 GB or more recommended)
Macintosh
·Mac OS X10.5.2 or 10.6
·PowerPC G4 1.25 GHz or Intel Core Solo 1.5 GHz processor (2 GHz or faster recommended)
·1 GB RAM (2 GB or more recommended)

Below are basic driver-setup instructions for a few popular audio applications.
Ableton Live
1. Launch Ableton Live.
2. Go to Options | Preferences | Audio.
3. Choose Driver Type: Asio | Audio Device: ASIO PRES0N** AUDIOB** U**96.
4. Go to Input Config: Enable and select the desired Input channels.
5. Go to Output Config: Enable and select the desired Output channels.
Apple Logic
1. Launch Logic.
2. Go to Logic | Preferences | Audio.
3. Click on the Devices Tab.
4. On the Core Audio tab, check Enabled.
5. Select PRES0N** AUDIOB** U**96 from the device menu.
6. You will be asked if you’d like to relaunch Logic. Click try (re)launch.
7. Your PRES0N** AUDIOB** U**96 features custom I/O labels for faster workflow. To enable these labels for
use in Logic, go to Options | Audio | I/O Labels.
8. The second column in the pop-up window will be named Provided by Driver. Activate each of these labels for
your PRES0N** AUDIOB** U**96. When you are done, close this window.
Avid Pro Tools 10+
1. Launch Pro Tools.
2. Go to Setup | Hardware and select PRES0N** AUDIOB** U**96 from the Peripherals list. Click OK.
3. Go to Setup | Playback Engine and select PRES0N** AUDIOB** U**96 from the menu at the top of the
window. Click OK.
Cakewalk Sonar
1. Launch Sonar.
2. Go to Options | Audio... and click on the Advanced tab.
3. Change the Driver Mode to “ASIO.” (Note: Using WDM, rather than ASIO, for pro audio applications is not
recommended.)
4. Click the “OK” button.
5. Restart Sonar.
6. Go to Options | Audio... and click on the Drivers tab.
7. Highlight all input and output drivers beginning with PRES0N** AUDIOB** U**96
8. Go to Options | Audio... and click on the General tab.
9. Set the Playback Timing Master to PRES0N** AUDIOB** U**96”
10. Set the Recording Timing Master to “USB96... Mic/Inst 1.”
Cubase
1. Launch Cubase.
2. Go to Devices | Device Setup.
3. Select “VST Audio System” from the Devices column in the Device Setup.
4. Select PRES0N** AUDIOB** U**96 from the ASIO Driver dropdown list.
5. Click “Switch” to begin using the PRES0N** AUDIOB** U**96 driver.
6. Once you have successfully changed the driver, go to Devices | VST Connections to enable your input and
output buses.

Specifications
Microphone Preamp
Type: XLR Female, Balanced
Frequency Response (±3.0 dB) 20 Hz to 20 kHz
Input Impedance (Balanced) 1200Ω
THD+N (unwtd, 1 kHz @ +4 dBu Output, Unity Gain) < 0.008%
S/N Ratio (Unity Gain, Ref. = +4 dBu, 20 Hz to 22 kHz) > 95 dB
Common Mode Rejection Ratio (1 kHz, 55 dB Gain) > 45 dB
Gain Control Range (± 1 dB) 0 dB to 35 dB
Max Input Level (Unity Gain, 1 kHz @ 0.5% THD+N) -3 dBu
Phantom Power (±2 VDC) +48 VDC (Global)
Instrument Input
Type ¼” TS Female, Unbalanced
Input Impedance 0.5 MΩ
Line Outputs
Type ¼” TRS Female, Balanced
Output Impedance 51Ω
Headphone Output
Type ¼” TRS Active Stereo
Maximum Output 60 mW/Ch @ 60Ω Load
Frequency Response (±1.0 dB) 20 Hz - 30 kHz
MIDI I/O
Type Dual 5-pin Female DIN
Digital Audio
ADC Dynamic Range (A-wtd, 48 kHz Sample Rate) 105 dB
DAC Dynamic Range (A-wtd, 48 kHz Sample Rate) 105 dB
Bit Depth 24
Reference Level for 0 dBFS +4 dBu
Internal Sample Frequency Selections (kHz) 44.1, 48, 88.2, and 96
Power USB 2.0 Bus-powered

www.soundbarrier.com