HOFA 4U+ BlindTest

Blind A/B Test Your Plugins

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     Instant Delivery

    Products with the Instant Delivery badge can be delivered to you in seconds after you place your order.


    Digital Products

    Digital Products are delivered electronically either via your order status page, or 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 necessary.

    After purchase, your license code and relevant links will appear on your order status page, or they will be sent to you by email.

    For detailed instructions on the registration/download process, you can visit our dedicated page by clicking here: Install Instructions.

Education Proof

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 proof


Student ID Card, Letter of enrollment, or similar


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.

The Basics

iLok is a copy protection method used by many of our brands.

It has 3 types of activations, iLok USB, iLok Machine, and iLok Cloud.

Different brands/products will offer different iLok methods. iLok USB is always an option, but the availability of iLok Cloud and iLok Machine methods is at the discretion of the software developer.

iLok Account

For all iLok protected products, you will need an iLok account. You can create one for free here: ilok.com/#!registration

iLok License Manager

To manage your iLok licenses, there is a dedicated app called iLok License Manager. This app is used to register, activate, and move your licenses between locations.

You can download the latest installers from the iLok website: ilok.com/#!home

iLok USB Key

iLok USB

This activation is stored on an iLok 2 or 3 USB key.

It is the best option for portability, if you frequently move between multiple machines, and offline use.

iLok Machine ID

Machine ID

This activation is stored locally on your computer.

While this is a convenient way to work offline, and does not require the additional cost of an iLok USB, there is the risk of a license being lost in the case of a drive failure.

This option also requires extra care when you upgrade to a new computer, the license(s) must be deactivated on your old machine first to ensure you do not lose them.

iLok Cloud

iLok Cloud

This activation is based online, and requires a "cloud session" using the iLok License Manager.

It requires an active internet connection for the entire time you use the plugin(s).

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.

Crossgrade Proof

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

A screenshot of your product registration

A photo of your package (either CD/DVD or printed manual), with the unique serial number included in the photo.