FAQ & Support

Download the installer for your platform from the Downloads page and follow the on-screen instructions. The installer places the plugin in the correct directories for all supported formats:

macOS (for every user of the Mac):

• /Library/Audio/Plug-Ins/CLAP/ for CLAP
• /Library/Audio/Plug-Ins/VST3/ for VST3
• /Library/Audio/Plug-Ins/Components/ for AU
• /Library/Application Support/Avid/Audio/Plug-Ins/ for AAX (Pro Tools)

Windows: CLAP and VST3 are placed in the standard Common Files plugin directories, and the AAX build goes into Common Files\Avid\Audio\Plug-Ins\ for Pro Tools.

Linux: Extract the archive and run install.sh. It installs for your user in ~/.clap/ and ~/.vst3/, or for every user in /usr/lib/clap/ and /usr/lib/vst3/ with --system.

After installation, restart your DAW and rescan your plugin folders if necessary. The plugin should appear in your plugin list.

No. The installer will overwrite the previous version automatically. Your presets and license file will be preserved.

After purchasing a UB DSP plugin, you will receive a license key file (.ubkeyfile) via email. To activate:

1. Download your .ubkeyfile from your account or the email you received after purchase.
2. Open the plugin in your DAW and click the Activate button.
3. Select your .ubkeyfile in the file browser — done.

That's it. No internet connection required, no activation servers, no challenge-response codes.

Your keyfile is always available in your account dashboard — you don't need the email to get started. Log in, go to My Licenses, and download your .ubkeyfile directly.

If you don’t have an account yet, one was created for you automatically at purchase — and there is no password to look for. Go to the login page, enter the email address you bought with, and we’ll send you a one-click sign-in link. You can also use Sign in with Google if that’s the same address.

Some email providers (particularly certain European and corporate domains) occasionally filter our emails. If you still can't find it, check your spam folder or contact us and we'll sort it out right away.

When you purchase a plugin, an account is automatically created using the email you used at checkout. There is no password — your purchase confirmation email includes a one-click link straight to your account.

If you try to register with that same email, the site will say it’s already in use — that’s because your account already exists. Go to the Login page, enter that email address, and we’ll send you a fresh sign-in link. Each link works once and expires, so it’s perfectly normal to request a new one.

Nothing arriving? Check your spam folder first — sign-in links land there more often than they should. If you request several links in a row, wait a few minutes before trying again. Still stuck? Contact us and we’ll get you sorted right away.

Your license covers up to 3 machines that you personally own and use. For example, a studio desktop, a laptop for live performance, and a backup machine. Simply copy the .ubkeyfile to each computer.

Not for core functionality. All audio processing and license validation happen entirely offline. An optional update checker pings our server on launch to notify you of new versions, and the optional anonymous telemetry sends a tiny report when the plugin loads. Both features can be disabled in the About dialog — and even without internet, the plugin works exactly the same.

UB DSP plugins work with any DAW that supports CLAP, VST3, AU, or AAX. Grit Blender, Vowel Blender and Filter Blender all ship an AAX build for Pro Tools on macOS and Windows.

• macOS: 10.13 (High Sierra) or later; versions before macOS 11 (Big Sur) are not tested. Universal Binary: runs natively on Intel and Apple Silicon (M1/M2/M3/M4).
• Windows: 10 or later (64-bit).
• Linux: 64-bit. Provided as-is, tested by the community. Report issues via our contact page.

Yes. UB DSP plugins are built with low-latency operation in mind and work well in live performance setups. Many also let you control their parameters in real time over MIDI from your controller or keyboard.

Only if you opt in. On first launch, a small popup asks if you’d like to help improve the plugin by sending anonymous usage data. If you click “Sure, happy to help”, the plugin sends an extremely small anonymous report each time it loads — smaller than a single MIDI note. This includes basic info like which plugin format is used (AU/VST3/CLAP) and feature usage counts. No personal data, no audio data, no project names — nothing that could identify you.

If you click “No thanks” (or just close the popup), nothing is ever sent. You can change your mind at any time in the About dialog’s Settings section. License validation is always local — no activation servers, no internet check required.

This is almost always something in your own browser blocking the secure payment window, usually an ad or privacy blocker, or an automatic page translation rewriting the page as it loads.

The quickest fix is to buy from your phone. Open the product page on your phone and tap Buy now. Phones rarely run the add-ons that block the payment window on a computer, so it normally opens right away. If your phone is on home WiFi and it still stalls, turn WiFi off so it uses mobile data, then try again.

If you would rather stay on your computer, open the page in a private (incognito) window, which usually disables extensions, or switch off automatic translation for the page, then start checkout again.

No rush either way: the free trial is fully featured with no time limit, so you can keep using the plugin while you sort this out. If none of that works, contact us and we’ll send you a secure payment link to complete your purchase.

It depends on where you live. In the EU and the UK, VAT is already included: you pay the price shown. Elsewhere, sales tax may be added at checkout by Paddle, the payment provider, as with any online purchase. In the US, for example, it depends on your state. Paddle shows the exact amount before you pay.

All purchases include a 30-day money-back guarantee. If you are not satisfied for any reason, you can request a full refund within 30 days of your purchase — no questions asked. Go to paddle.net, enter the email you used at checkout, and follow the steps to request a refund. The process is handled entirely by Paddle and typically takes 3–5 business days for card payments. Full details are in our Refund Policy.

If you’d like to share why the plugin didn’t meet your expectations, feel free to contact us — your feedback helps us improve.

The reseller gives you a code that reads UB-XX-XXXX-XXXX-XXXX. Enter it on the redeem page with the email address you want the license under: your .ubkeyfile is ready on that page in seconds, with the installer, and a copy goes to your inbox. One code is one plugin, and it works once.

If you already have a UB DSP account, use the same address and the new plugin joins the ones you own, owner’s pricing included. Updates, support and your account are the same as for a purchase made here. A refund for a code goes through the reseller you bought it from, under their policy.

I won’t answer that with a promise, because nobody could check it. Here is what you can check.

Your license is a .ubkeyfile that the plugin checks on your own computer. There is no activation server and no account check when the plugin loads, so nothing at UB DSP needs to be online for the plugin to keep working.

Keep the installer and your keyfile together in your backups. With those two files you can reinstall without asking anyone.

And the plugins keep getting updated: Grit Blender came out in February 2026, Vowel Blender came out in May, and Filter Blender came out on October 2. Updates are free, and the release notes are on the Downloads page.

The fastest way to get help is to use the UB DSP Diagnostic Tool. You can access it in two ways:

• Open the About dialog in the plugin and click “Plugin not working? Run diagnostic” at the bottom.
• Go directly to the Diagnostic Tool page on our website.

The diagnostic tool is a small standalone application that checks your system configuration, scans for all installed UB DSP plugins (versions, formats, locations), and can send a complete report to our support team. This gives us all the information we need to help you quickly.

It’s a free standalone application available for macOS, Windows, and Linux. It gathers information about your system (OS, CPU, RAM, audio hardware) and scans the standard plugin directories for UB DSP plugins. You can then enter your email and send the report directly to UB DSP support. The tool also has a command-line mode for advanced users. Read the Diagnostic Tool manual for full details.

Yes. You can download the trial version from the Downloads page. The trial includes the full feature set and full sound quality so you can properly evaluate the plugin before purchasing. The only limitation is a brief 2-second silence every 40 seconds — enough to prevent production use but not enough to get in the way of evaluating the sound.

No, and the reason is simple: there is no inflated list price to discount from. The price you see is the price we think the plugin is worth, and everyone pays it — students, teachers, hobbyists, studios.

What is free is the trial: the full plugin, full sound quality, no time limit. You can learn on it and keep it in your sessions for as long as you need, and only buy when a real project asks for it.

And once you own one UB DSP plugin, the rest of the catalogue drops to your owner’s price automatically — see the question below.

If you teach and need several seats for a class or a school lab, get in touch and we will sort something out.

Yes. Once you own a UB DSP plugin, the others drop to your owner’s price: 30% off when you own one plugin, 40% off when you own two or more. Log into your account dashboard and you’ll see your price on the rest of the catalogue under Complete your collection. The discount is applied automatically at checkout, so there’s nothing to enter.

One rule sits on top of it: all discounts combined, nobody ever pays less than 60% of a plugin’s regular price. During a sale your owner’s price still comes off the sale price, at a smaller rate that keeps to that rule. That way, what you paid last month stays fair.

UB DSP started with Grit Blender (saturation), then Vowel Blender (vocal formant shaping) and Filter Blender (analog-style filters blended on a triangle), with more plugins in development. Each one follows the same principles: artisan quality, broad format support (CLAP, VST3, AU and more), and no intrusive DRM. Follow the blog for updates.