VAT Refund for EU B2B Companies:

Enter your registration number in the notes field during checkout, and we'll ensure your VAT is refunded accordingly. For any inquiries or assistance, please use our Help Desk.

We currently ship to the EU, USA, Australia, Canada, Hong Kong, Japan, Mexico, New Zealand, Norway, South Africa, South Korea, Switzerland, and United Kingdom.

Orders to USA and EU: no extra costs, duties or levies

Orders to countries outside the EU and USA: you will be refunded the EU VAT (22%) immediately after your purchase, as it will be paid locally when importing.

Delivery Times:

• standard shipping: 10-18 days.
• DHL or FedEx Express: 2 days.

We offer 90 days trial period on all our products. So you can take the time to test them out and make a decision. In case you wish to return them, you need to send them to us. We will refund your purchase but exclude any duties, levies and shipping back to us. For details reach out to our support.

You can purchase directly from us. Express delivery is usually in 2 days. We also have US based resellers and Amazon stores.

We have a list of resellers you can explore or buy directly from us. Most destinations are available. If your country is not on the shipping list in the checkout, please write to support@olloaudio.com and we'll maually check for delivery options to your address. You can also use WhatsApp support number 00386 69 71 28 41.

At this time we do not have balanced option available. You can find some generic options on Amazon or similar stores. The tip for both channels is the positive. If you wish to make your own cable, here's the wiring diagram.

We have service center in the USA, UK and the EU. Reach to support for details.

We believe in fair pricing all year long.⁠

⁠Free beats, gigs and mixes are all disrescpectful and are killing the industry.⁠ Everyone should be paid fairly and accordingly. So we do not offer discounts per se (not even on Black Friday and Cyber Monday) as we don't support that mentality.

We do lower the price when there is a good reason to do so. And we have three!

1. B STOCK UNITS

B stock items are sonically exactly the same as A stock but with minor cosmetic imperfections. These are brand new, unused units. Limited offer to when such units are available! Check availability here.

2. OFFER FOR STUDENTS

We’re aware that being at the beginning of your career can be hard. We have an offer to support all the audio-related students and teachers with a 25% discount on our headphones. To get this offer, please reach out to us with your student or teacher ID via this form, so we can verify eligibility and grant you a student status with us.

3. ENDORSEMENT PROGRAM

Our community is at the heart of everything we do. Engineers, creators and artists participate in the process of developing all of our products. If you work as a full-time audio engineer, musician, or in a similar audio-related profession and share the passion for pro-audio, you can apply to join. The endorsement community is the cornerstone for our R&D team. We take their feedback very seriously. Interested? You can apply here.

Wondering who's in the community?

Explore our community map

Generic calibration software typically hits a tolerance of around 3dB from their target, often based on the Harman curve or something similar. In contrast, OLLO headphones are acoustically flat, with a tighter tolerance of about 2dB to our studio headphones standard without any software calibration.

This means they match our target curve more closely without any calibration than when using generic plugins to "correct" them.

Generic calibration means taking the average response of a few units and using that for any unit as the source data set. Imagine measuring a few generic rooms and apply their EQ settings to your room?! You'd never do that, of course not.

That's why they're limited to about ~3dB tolerance accuracy and can never achieve the level of precision of the USC calibration you get with us.

How do we achieve that?

The USC removes manufacturing variances and enhances frequency response beyond what's typically possible (with acoustics only) for each individual unit.

This is achievable because we meticulously test each unit during quality control, allowing us to customize the calibration precisely for that unit.

Generic calibration software solutions often advertise "individual calibration services," which require you to send in your headphones and pay a premium. For instance, Sonarworks charges €149 for this service, plus shipping costs and an additional €99 for the Sound ID license, totaling nearly €300.

With OLLO USC, you receive individual calibration and the USC license included when you purchase our headphones or as a flat-rate €49 upgrade for older models!

For the geeks disecting every word:

A tolerance of ~0.5 is generally acceptable in our official reports and documentation. This does not include HRTF - KB500 by GRAS resonances, as we avoid correcting anything with a Q factor above 1.2. This limitation is due to the current capabilities of ear simulators on the market, which can lead to poor sound quality if there's a mismatch between the simulator's and the end user's HRTF. We utilize a variety of systems, ear simulators, sources, and targets, and we always clearly specify the tools and methods used near any claims, charts, or datasets we present. For instance, we detail smoothing steps, source signals, and compensations applied. When referencing competitors' claims, we rely on their officially published materials or data obtained in the lab using well-defined and disclosed scientific methods and tools. We mention their brands or product names strictly for comparative purposes (fair use). It's worth noting that they produce excellent products.

Read more about individual calibration

If you're using the 2.0 edition or later, you can import the calibration file directly. Otherwise, you'll need to manually input the calibration values into the EQ section of the plugin.

Thank you for your support! You can keep using the USC I with all types of headphones, including the X1. Feel free to also use the USC II and import your calibration file from the USC I seamlessly. It's perfectly fine to have both plugins installed on your system.