HOFA 4U+ BlindTest
Blind A/B Test Your Plugins
The HOFA 4U+ BlindTest allows you to objectively compare hardware or plugins inside your DAW. Only if you compare objectively, will you get the best-sounding result.
We often get distracted by appearance or names: we think we hear differences that do not exist - simply because of the connection between visual and auditory perceptions. Therefore, we unconsciously often compare the expectations we have of a product, rather than the actual sound character.
In order to avoid this problem, HOFA has developed a reliable blind test, so you can concentrate on what is important: the sound!
Simply insert 4U+ BlindTest as the last plugin on every track that you want to compare. The track that is Soloed in 4U+ BlindTest will play. All other tracks are muted.
The Shuffle Button
Click on "Shuffle" to anonymize the tracks and put them in random order. Now you can switch between the signals to compare them objectively. Assign a rating from 0 to 5 and write down comments about your aural impression. The names of the tracks can then be revealed again.
You can use the shuffle mode multiple times. This way you an average, creating your personal sound study. The comments can be displayed together, so you can compare whether your aural impressions were the same every time.
To make sure that the results are really objective, there is a peak level display and gain control for every track, so you can make sure the volume differences do not influence your decisions. The GUI is freely scalable so that you can use it to hide anything on your screen that may influence your decisions like your DAW’s mix window.
You might not want to compare all tracks at once. Simply drag unused tracks to the "INACTIVE" section. This can be used to sort out tracks during a test run.
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Products with education pricing are for students & teachers only. To prove your education status we require that you upload proof in the form of an image/PDF.
Types of proofStudent
Student ID Card, Letter of enrollment, or similarTeacher/Lecturer
Teacher ID Card, Lecturer ID Card, Payslip, Letter from the school/college
Education proof is submitted to the manufacturer and is accepted at their discretion.
Digital Download Info
Digital Products are delivered electronically via Email. No physical product will be shipped to you!
In most cases, the product you purchase from us is a serial number/license code/activation code to register the product with the manufacturer and download directly from them. This ensures you receive the latest version of products, and the best support when neccessary.
The email you receive from us after purchase will contain the license code and a link to our Install Instructions page. You can visit that page by clicking here: Install Instructions.
This crossgrade is for owners of a competing DAW. To prove your DAW ownership, we require that you upload proof in the form of an image/PDF.
Types of proof
A copy of your purchase receipt for the original license or the most recent update/upgrade
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Get a free upgrade to RX10
This offer is valid until RX10's release.
Purchase one of the following products:
- RX9 Standard
- RX9 Standard - Crossgrade from any paid iZotope product
- RX9 Standard - Upgrade from any RX Standard, Advanced, or Post Production Suite
- RX9 Standard - Upgrade from RX Elements/Plugin Pack
- RX9 Advanced
- RX9 Advanced - Crossgrade from any paid iZotope product
- RX9 Advanced - Upgrade from RX Advanced 1-8, or Post Production Suite 1-5
- RX9 Advanced - Upgrade from RX Standard 1-8
- RX9 Advanced - Upgrade from RX Elements/Plugin Pack
- RX Post Production Suite 6
- RX Post Production Suite 6 - Upgrade from RX Post Production Suite 1-5
- RX Post Production Suite 6 - Upgrade from RX Advanced 1-8
- RX Post Production Suite 6 - Upgrade from RX Standard 1-8
- RX Post Production Suite 6 - Upgrade from RX Post Production Suite 1-8
Only the upgrades and crossgrades specified above are eligible. All others listed apply to the full version of the product only. Education versions are not eligible.