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HARMONY H224 AUDIO INTERFACE OWNER’S MANUAL

13

CONNECTING TO A COMPUTER

Before connecting your Sterling H224 hardware to a computer, please visit 

www.sterlingaudio.net/products/

downloads/H224 to check for the most current software and drivers for use with your computer.
Note: The speed of your computer processor, amount of RAM, and capacity, size, and type + 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 system performance.
The Windows OS installer also includes a Windows ASIO driver for great low-latency throughput performance.  
No driver installation is necessary for Mac OS.

H224 CONTROL PANEL INSTALLATION FOR MAC OS

Your new H224 audio interface is a class-compliant Core Audio device in macOS. No driver installation is 
necessary.
To use the H224 for the audio output for your computer you will need to go to the 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 you don’t have to do this to use the H224 for 
your DAW (digital audio workstation software). The selection for inputs and outputs should be made in the DAW 
application.

Installing the H224 GUI (Graphic User Interface) Control Panel
The Control panel for the H224 allows you to control the hardware from your computer as well as set the sample 
rate for the interface.
1. Go to www.sterlingaudio.net/products/downloads/H224 to download the macOS H224 Control panel. 
2. After downloading the file you will need to uncompress it. The file will have the extension .dmg.
3. Double-Click on the file and the file will uncompress itself and display a window showing the installer H224_

Panel-xxxxx.pkg.

4. Double-click on the icon. You will now see a window pop with the Installer. 
5. Click on the Continue button in the installer. A new window will pop up asking for you to install choose the 

installer location. 

Sterling 20347518 H224 Manual_Rev.indd   13

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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