Heritage Audio ELITE Series User manual

USER MANUAL
DUAL CHANNEL
MICROPHONE PREAMP
ELITE SERIES
HA-73X2
August/2022)Rev.)1.0.)

2
INTRODUCTION
CONTENTS
DESCRIPTION
GETTING STARTED
APPLICATIONS!
SPECIFICATIONS!
SIGNAL FLOW!
TROUBLE SHOOTING
WARRANTY STATEMENT
REGISTRATION
RECALL SHEETS
2
2
3
4
5
6
6
7
8
8
9
HA-73X2
AC POWER CORD EU & US
POWER SUPPLY HA-PSU04
TABLE OF CONTENTS
Thank you for choosing the Elite Series HA-73X2. Heritage Audio is dedicated to bringing you ´the sound of yesterday
for tomorrow´. We specialize in capturing that unique, enticing sound that everybody has fallen in love with. For years
engineers, producers and musicians have been yearning for that classic vibe. Usually the only option is to search for
old, used original equipment that is almost always in a questionable state of operation. This brings with it a whole lot of
other issues, making the experience less than desirable. Not to mention the very high prices asked for this equipment,
which makes them virtually unobtainable for the great majority. Now it´s possible to obtain that same sound with a brand
new piece that will give you all the problem-free, heavy-duty use you´ll need for years of music making history.
Peter Rodriguez
CEO!
Heritage Audio - Madrid, Spain
INTRODUCTION
© 2022 Heritage Audio S.L. is the sole owner of the copyright of all information and drawings contained in this manual which are not to be copied or
reproduced by any means or disclosed in part or whole to any third party without written permission.
Heritage Audio reserves the right to alter specifications without notice. The information in this manual has been carefully checked and is believed to
be accurate at the time of publication. However, no responsibility is taken by us for inaccuracies, errors or omissions nor any liability assumed for any
loss or damage resulting either directly or indirectly from use of the information contained within it.

DESCRIPTION
The HA-73X2 Elite single channel microphone preamp is made to the same specifications as the acclaimed 73 JR II
and DMA 73 Heritage Audio models at an unheard of price.
Using the expertise and reputation obtained with its popular time-consuming hand soldered series, Heritage Audio is
able to offer a zero compromise, high quality yet very affordable alternative to the growing entry-level brands.
A combination of lean manufacturing, modern construction techniques and mass production, minimizes hand labor and
therefore its high associated costs when manufacturing takes place in Western Europe. By passing the savings straight
into the end users´ pockets, Heritage Audio releases the most affordable outboard preamps and equalizers in its class
up to date.
Key components to obtain a true vintage sound are indeed maintained, like the industry standard Carnhill transformers,
hand wound in St Ives, England.
Manufactured in the same Spanish facilities as the rest of the Heritage Audio line of products, the rack mountable
HA-73X2 Elite presents the classic sounding recording preamp that, for generations, has been regarded for its rich,
musical qualities and its ability to dramatically improve the sound of almost any source.
Further, it includes the same exact great sounding JFET DI circuit found in the 73 JR II and a fully discrete class A high
pass filter.
With 80 dB of available gain and dedicated mic, line, and instrument inputs; the HA-73X2 Elite has everything you need
to bring microphones and instruments to life with vintage vibe and thickness.
The HA-73X2 Elite features gain, output trim, -20db pad, polarity reverse, a high pass filter, and +48 V phantom power."
It comes housed in a rugged 1RU British steel chassis and utilizes an external power supply for low noise operation."
The HA-73X2 features Carnhill input and output transformers, high quality pots and switches, and best of all is 100 %
made by Heritage Audio.
3

GETTING STARTED
4
6
7
8
9
10
OUTPUT ATTENUATOR
Attenuates from 0 to Infinity
MIC INPUT IMPEDANCE
1200 Ωor 300 Ωwhen pressed
LINE
Switches from MIC/D.I. to Line
PHASE
Flips phase 180º
POWER
Activates Unit
FRONT
REAR
1
2
3
4
POWER INPUT
To Be Connected to the HA PSU04
Power Supply
LINE OUTPUT
Male XLR Connector
LINE INPUT
Female XLR Connector
MIC INPUT
Female XLR Connector
1
2
3
4
5
D.I. INPUT
High Impedance Class A JFET
INPUT GAIN SWITCH
5 dB Steps From 30 to 80
MIC PAD
20 dB Reduction Ahead of Input
Transformer
PHANTOM POWER
Activates 48 V
HIGH PASS FILTER
-3 dB at 82 Hz, Discrete Class
A
4
3
5
6
7
8
9
1
2
3
4
1
2
10
All XLRs are:
Pin 1: GND!
Pin 2: Hot!
Pin 3: Cold
1
2
3
3
2
1
GND!
Hot (+)!
Cold (-)
MALE XLR
FEMALE XLR
D.I. Jack:
Tip: Signal!
Sleeve: Ground!
Tip=Signal
Sleeve=Ground/Shield
Tip
Sleeve

MIC
APPLICATIONS
D.I.
LINE
CONDENSER MIC - L
OUTPUT - R
LINE INPUTS - AUDIO INTERFACE
USB - COMPUTER
USB - COMPUTER
USB - COMPUTER
LINE INPUT - L
CONDENSER MIC - R
ACTIVATE +48 V FOR CONDENSER MIC
MIC INPUT R
MIC INPUT L
OUTPUT - L
GUITAR FX PEDAL
OUTPUT - L
OUTPUT - R
D.I. INPUT - R
D.I. INPUT - L
LINE INPUTS - AUDIO INTERFACE
LINE INPUTS - AUDIO INTERFACE
5
LINE INPUT -R
LINE OUTPUTS - KEYBOARD
OUTPUT - L
ACTIVATE LINE SWITCHES
OUTPUT - R

SPECIFICATIONS
•Microphone input impedance: High=1200 Ωminimum; Low: 300 Ωminimum. Higher gain positions gradually have
greater impedances, optimum for low gain ribbon mics. Input is transformer balanced and floating.
•Line input impedance: 10 kΩbridging, transformer balanced and floating.
•Output impedance: Less than 75 Ω, transformer balanced and floating, to drive a load of 600 Ω.
•D.I. input impedance: Greater than 2 MΩ, unbalanced.
•Maximum output: Greater than +26,5 dBu into 600 Ω(internally terminated).
•THD: Less than 0,025 % at 1 kHz, Less than 0,05 % at 100 Hz.
•Frequency response: 20 Hz (+0,3 dB) to 20 kHz (-0,2 dB).
•Maximum Gain: Slightly greater than 80 dB.
•Equivalent Input Noise: Less than -125 dBu.
•Output stage noise: Less than -100 dBu.
•Power consumption: Less than 260 mA @ 48 V DC.
• Dimensions (W x H x L): 482 mm x 44 mm (1 Rack unit) x 184 mm.
6
SIGNAL FLOW
MIC/LINE INPUT
LINE OUTPUT
OUTPUT AMP
INPUT AMP
CHANNEL RIGHT
PAD
LOZ
PHASE
HIGH PASS FILTER
CHANNEL LEFT
MIC/LINE INPUT
LINE OUTPUT
OUTPUT AMP
INPUT AMP
PAD
LOZ
PHASE
HIGH PASS FILTER
D.I.
D.I.

TROUBLE SHOOTING
PROBLEMS
SOLUTIONS
There doesn´t appear to be any signal at all arriving at the
back XLR.
Make sure the GAIN knob is not in the ´Off´ position.
There still doesn´t appear to be any signal at all arriving at
the back XLR.
Check to see if a jack cable has been left plugged into the
front panel D.I.
Even at the lowest position on the GAIN knob I still have
too much gain.
When this happens you should activate the PAD button.
This will reduce the input by 20 dB ahead of the input
transformer.
Condenser microphones don´t seem to work with HA-73.
Make sure the red +48 V button is pressed in to activate
the phantom power sent to the microphone.
There doesn´t seem to be any output at all from the unit.
Check to see if the OUTPUT knob is fully turned down as
this will attenuate the signal completely.
Sending a signal to the unit from a DAW overloads it
terrible.
It is necessary to press the LINE button when sending it a
line level source.
If not, it is expecting a Microphone signal with a very
different impedance.
7
* For any further doubts or questions please get in contact with us at: [email protected]!

LIMITED 2 YEAR WARRANTY
Heritage Audio HA-73X2 is warranted by Heritage Audio SL to be free from defects in materials and workmanship for
the period of 2 years to the original purchaser. In the event of such defects, the product will be repaired without charge
or, at our option, replaced with a new one if delivered to Heritage Audio prepaid, together with a copy of the sales slip or
other proof of purchase date. The warranty excludes problems due to normal wear, abuse, shipping damage or failure
to use the product in accordance with the specifications.
Heritage Audio shall not be liable for damages based upon inconvenience, loss of use of the product, loss of time,
interrupted operation or commercial loss or any other damages, whether incidental, consequential or otherwise.
This warranty is not transferable.
Heritage Audio and the Heritage Audio “H” logos are registered Trademarks owned and/or licensed by Heritage Audio.
REGISTRATION
8
Please visit our website:
WARRANTY STATEMENT
https://heritageaudio.com/registration/

RECALL SHEETS
9
Session / Title: Track: Connected Equipment: !
Date: Instrument: Notes:
Switch ON
Switch OFF
Session / Title: Track: Connected Equipment: !
Date: Instrument: Notes:
Switch ON
Switch OFF

www.heritageaudio.com
HERITAGE AUDIO. C/ Alfonso Gómez, 38, 3C. 28037 Madrid – Spain. Tel: [phone]
[email protected]