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3.

GETTING TO KNOW THE X0HA-REP AMP

The input jack socket – (music symbol). To connect to your portable 
player use the included 2ft 3.5mm stereo jack plug cable. Plug one end
of this cable into this jack and the other end into the headphone or
line output jack of your portable player.

The output jack socket – (headphone symbol). This is where you 
plug in your IEM’s. This socket accepts a standard 3.5mm (1/8” mini)
stereo jack headphone plug. You may connect headphone sets with
impedance ranging from 16 ohm to 300 ohm. Consult your IEM 
manufacturer specification chart to determine your headphone impedance. 
The X0HA-REP is not recommended for IEM’s with impedance 
exceeding 300 ohm.

The volume control and power switch - The volume control has an 
integral power switch, when rotated to the “Off” position the power is 
turned off. To turn on the X0HA-REP simply rotate the volume control 
clockwise, you will hear a click and if the battery is at the correct voltage 
level the blue power LED will light up.
Adjust the IEM volume  level to your desired listening level
by rotating the volume control knob clockwise to increase and counter 
clockwise to decrease the volume level.
NOTE: It is normal for the X0HA-REP to become slightly warm when 
using it with An AC adapter. Do not place the X0HA-R near a heat source
or in a small confined space when operating it using an AC adapter.

1.

WELCOME

Congratulations on your purchase of the Xenos 0HA-REP Enhanced 
Performance Mini IEM / Headphone Amplifier (X0HA-REP). 
The compact Xenos 0HA-REP will provide you with audiophile quality
performance for your IEM’s when used with any portable playback 
device that has a headphone or line output. The X0HA-REP utilizes a
high performance Texas Instruments OPA2134 op amp as an input 
buffer and does not have capacitors in the audio signal path for enhanced
audio performance. Please consult the product data sheet and 
specification sheet for additional technical details.
The X0HA-REP includes a built in 9V NiMH battery charger eliminating 
the need for a separate charger.

Take time to read through this user guide as it will provide you with 
valuable information to help you ensure that you get the very best 
performance from your Xenos 0HA-REP. 
Thank you for choosing Xenos Audio Systems™.

2.

PACKAGE CONTENTS

X0HA-REP:
- The Xenos 0HA-REP – Mini IEM / Headphone Amplifier
- 3ft (90cm)  3.5mm stereo jack interconnect cable
- This user guide.
X0HA-REP kits may additionally include:
- AC adapter - 120VAC input, 12VDC 200mA output
- 9V 280mAH NiMH rechargeable battery

The blue power LED – With the power turned on this LED has two
functions as follows: If the LED is on then battery level is good; If the
LED is off the battery level is below the normal operating limit of 6.7V
and the battery should be replaced or recharged.

The DC power jack – This jack socket is located on the right side of the
X0HA-REP. It accepts a standard DC plug with 3.5mm barrel and 1.3mm 
pin. CAUTION: DC plugs of the wrong size can permanently 
damage the DC power jack in the X0HA-REP. 
Ensure the AC adapter’s DC plug is inserted all the way into 
the X0HA-REP DC jack before connecting it to AC power. If not this
could damage the rechargeable battery.

The DC jack centre pin is 

+

and barrel is 

-

The X0HA-REP is protected against reverse polarity to prevent
damage to the internal electronics.
A standard non-regulated AC adapter  with 12VDC 200mA output will 
power the X0HA-REP. The 12VDC adapter can also charge a 9V NiMH 
Battery when  installed. Refer to Section 4 of this user guide to 
determine the correct  switch settings when using the X0HA-REP with 
a 9V NiMH rechargeable battery. 

The 9V battery compartment, installing and removing batteries -
(see next page) The battery access door is located on the bottom rear
end of the X0HA-REP.
To remove the battery first remove the belt clip if installed by applying 
gentle downward pressure as indicated by the arrow on the belt clip then
lift away the belt clip. Open the battery compartment door as shown. 
Use a small flat blunt object such as a key (see picture) and apply gentle 
pressure to pry the battery out of the compartment.
To install a fresh battery
Simply align the fresh battery with the contacts inside the battery 
compartment and push it down till it is firmly Installed as shown. 
Replace the battery door cover and if desired the belt clip.

Xenos Audio Systems

Product Warranty 

and Registration Card

Xenos 0HA-REP 

Enhanced Performance 

Mini IEM / Headphone Amplifier

With Built in 9V NiMH Battery Charger

User Guide V1.0a

The Xenos Audio Systems logo 

is a Trademark of Xenos Audio Systems.

www.aptecpro.com

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