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INTRODUCTION

Thank you for purchasing this Harmony H224 USB Audio Interface — a studio quality, compact and portable 
solution for routing high quality audio to and from your computer with high quality Class-A discrete microphone 
preamplifiers, just like a professional recording console.  

INSIDE THE BOX

Inside your new H224 packaging, you should find the following:
• Harmony H224, 24-bit, 192 kHz audio interface
• Harmony H224 Product User’s Manual
• 1 Meter length USB-C to USB-A cable
Included Free Software: All complementary software for your Harmony H224 are found inside this box, 
please use the included serialized redemption cards on-line with the respective product websites to acquire the 
software and activate per the manufacturers guidelines.

STERLING PRODUCTS FOR RECORDING INTEGRATION

As a recording solutions company, we believe the best way to take care of our customers (that’s you) is to 
ensure that you have the best possible experience from the beginning of your signal chain to the end — what 
we call our Unified Signal Path. 
To achieve this goal, we’ve prioritized seamless integration throughout every design phase of these products 
from day one. The result is systems that complement each other as intended — straight out of the box — 
without excessive configuration hassles.

Sterling 20347518 H224 Manual_Rev.indd   4

12/21/20   3:06 PM

Summary of Contents for HARMONY H224

Page 1: ...OWNER S MANUAL HARMONY H224 AUDIO INTERFACE Sterling 20347518 H224 Manual_Rev indd 1 12 21 20 3 06 PM...

Page 2: ...CONNECTIONS 11 REFERENCE CONNECTION DIAGRAM 12 CONNECTING TO A COMPUTER 13 H224 CONTROL PANEL INSTALLATION FOR MAC OS 13 STERLING H224 CONTROL PANEL FOR MAC OS 14 H224 DRIVER CONTROL PANEL INSTALLATIO...

Page 3: ...ll features designed for the product it is important to follow the directions below as indicated on the included card in your Harmony H224 packaging Before use please take a moment to access the most...

Page 4: ...this box please use the included serialized redemption cards on line with the respective product websites to acquire the software and activate per the manufacturers guidelines STERLING PRODUCTS FOR RE...

Page 5: ...HARMONY H224 AUDIO INTERFACE OWNER S MANUAL 5 Product Integration Sterling 20347518 H224 Manual_Rev indd 5 12 21 20 3 06 PM...

Page 6: ...your Harmony H224 audio interface are equipped with combination connectors that can connect both standard XLR and TRS connector cables Both combination input connectors have been designed wired for ma...

Page 7: ...ctors are fully balanced Line Level audio 4dBu outputs capable of feeding studio monitors headphone amplifiers as well as outboard processing equipment like effects processors E MIDI I O CONNECTIONS T...

Page 8: ...8 Sterling 20347518 H224 Manual_Rev indd 8 12 21 20 3 06 PM...

Page 9: ...s may be helpful in recording situations where the sound source is very loud and needs to be reduced to avoid clipping of the signal or reducing distortion Technical Note The PAD switches on the H224...

Page 10: ...e state has changed If you would like to switch back to the previous state press and hold the DIRECT button again for two 2 seconds Switching between Mono or Stereo Direct Monitor output is possible w...

Page 11: ...he OUTPUT button until you see the Headphone symbol illuminated in the Lens section before a level change is made FRONT PANEL CONNECTIONS A Instrument Inputs The H224 comes equipped with two 2 dedicat...

Page 12: ...lume may be advantageous Technical Note Headphones with higher impedances will require more power to drive an equivalent volume than from a lower impedance headphone therefore you may require setting...

Page 13: ...System Preferences to the Sound preferences and select the Output tab There you will see the Harmony H224 for the output choice To set it for input select the Input tab and select it there Note that y...

Page 14: ...me Mute settings as well as when Headphones have been set to monitor output path 3 4 The H224 Control Panel has some options for use and configuration FILE allows for Always On Top H224 Control Panel...

Page 15: ...After H224 Control Panel is launched the first time from your applications the H224 Control Panel is able to be recalled via the Sterling Logo icon in the top of the macOS system menu bar Sterling 203...

Page 16: ...l WDM and ASIO drivers as well as the H224 Control Panel application It is recommended that you quit all applications before you start the installation 1 Download the Sterling H224 Control Panel App f...

Page 17: ...4 Some drivers will install then you will see Welcome to the Device Driver Installation Wizard Click Next and follow the instructions 5 When the drivers have been installed click Finish Sterling 2034...

Page 18: ...information If you have any problems during the install try disabling any antivirus software you might have running Mapping your Sound Output to the H224 You can set the H224 as your sound input and...

Page 19: ...ut section under Choose your output device select Speakers H224 Audio Driver 4 If you want to use the mic inputs with apps like video conferencing select H224 Analog 1 2 under Choose your input device...

Page 20: ...for use later when you disconnect and reconnect your hardware or resume recording or music playback during use The H224 Control Panel can store PAD High Pass Filter Direct Monitor Output Path Volume...

Page 21: ...IO INTERFACE OWNER S MANUAL 21 HELP allows for About Quick info on hardware firmware version Software update links when available Support contact information Sterling 20347518 H224 Manual_Rev indd 21...

Page 22: ...in EIN 129dBu Maximum Gain 150 Load PAD On Input Impedance 3k Ohm Phantom Power 48V 0 5V 10mA total LINE INPUTS Maximum Input Level 28 dBu Balanced Minimum gain Gain Range 25dB to 35dB Operational Ran...

Page 23: ...s of merchantability or fitness for a particular purpose subject to normal use and service for 2 years to the original owner from the date of purchase proof of purchase required Retailer and manufactu...

Page 24: ...Sterling 20347518 H224 Manual_Rev indd 24 12 21 20 3 06 PM...

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