FLAT SOUND OUT OF THE BOX
FLAT SOUND OUT OF THE BOX
Accurate monitoring is not optional, it's necessary.
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BAD MONITORING
STEALS YOUR GRAMMY
Most studios do not have a truly flat frequency response. Even in the sweet spot, room modes create peaks and dips beyond software's control. The X2 fixes this with room independence and flat tuning, allowing your monitoring to rival the flattest studios in the world.
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ACOUSTICS & CALIBRATION
The X2 acoustics and calibration were developed together rather than software forcing the speakers to do backflips.
Level 1.
A C O U S T I C S
The sound of the X2 is neutral (balanced). Achieved by pushing what's possible using acoustics alone. Plug them in and you're ready for producing and mixing your songs.
Level 2.
C A L I B R A T I O N
The calibration adds to the X2’s accuracy by fixing the subtle nuances that physical acoustics can’t resolve on their own. Together, they deliver the flattest possible sound for your most demanding audio projects. From sound design to mastering jobs.
Included with the X2
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Calibration that works on laptops or analog consoles
The X2 unit-specific calibration follows you to any device. Software independent.
No subscriptions - no locked ecosystems - no BS.
To unlock the X2's maximum performance, use the included unit-specific calibration (USC file) to push the accuracy beyond what's possible using acoustics alone. Every USC file uses human-readable EQ data completely unencrypted, with no software lock-in or subscription fees. You own your calibration data 100%.
Use it with any DAW EQ, correction plugin, or DSP hardware interface. Download example USC file here.
USC VIA PLUGINS
USC plugin
Included with the X2
Realphones
Full integration
SonarWorks
Via Custom target
Morphit
Custom EQ
Waves nx
Some coding required
rogueamoeba
Standalone MAC OS
Other
Any EQ enabled plugin
USC WITH DSP AUDIO INTERFACES
RME
Total Mix
UA Apollo
UAD Console (SoundID)
ARC ON Ear
Custom EQ
MOTU
Pro Audio Control
Neumann
Anubis and MT48
MH
MIO Console
Other
Any EQ enabled output
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Signal flow
The USC file carries calibration data that you can insert into your signal chain in many ways. From the simple VST plugin like the USC-1 on your DAW master to custom setups on monitor controllers like the Metric Halo ULN or RME ADI-2 Pro FX.
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USC plugin included
Your X2 headphones come with a serial number, used to download the USC File (your calibration data). You can import the file into the included USC Plugin or use it with 3rd. party solutions.
- USC File integration
- Support for 5 USC calibrated headphones
- Customization to taste
- Crossfeed
- Bypass toggle (when used in DAW before bouncing)
- Reverse compatible with all USC and MSC files (S4X, S5X, X1)
VST, AU, AAX, Standalone Mac and Win
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Printed datasheet
Yes, you read that right. We include your USC calibration data printed right inside the package, so you always have it on hand when working in a guest studio. Simply dial the USC values into whatever EQ you have available (DAW, interface, or monitor controller). No software installation, no admin passwords, and no phone calls to make it happen.
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DURABILITY
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DURABILITY
DURABILITY
FOR THE IDIOTS VISITING YOUR STUDIO WHO ARE DISRESPECTFUL TO YOU AND YOUR GEAR
Not everyone can have a properly treated room, but everyone serious in music can save up for a pair of the X2
NEUTRAL - FLAT SOUND
The core promise of the X2 is neutral (balanced) sound that is crucial for achieving great translation of your mixes and masters.
DURABLE BY DESIGN
Handbuilt from American walnut, Aluminium, Stainless steel, Artificial leather, and Silicone. Backed up with a 5-year limited warranty.
EASY MAINTENANCE
When it's time, you can easily replace worn out parts of the X2 right at home. No special skills needed – anyone can handle it.
QUICK SETUP
Plug them in, put them on, and hit play. Share with your colleagues quickly without needing to adjust the headband.
EASY TO DRIVE
Custom made low impedance drivers play loud on just about any device.
OPEN SOURCE CALIBRATION
The USC file is open to read with human eyes. You can use the calibration values on almost any EQ setup.
The OLLO X2 do not care how good you think your mix sounds. They reveal what's actually there. There's nowhere to hide if your low end is muddy, you'll know it. If your compression is killing the groove, you'll hear it. If your reverb isn't sitting right, it'll become obvious. These headphones don't make your mix sound better. They give you the precision to make it better yourself. These headphones don't hide things, and they certainly don't make excuses for your decisions. I found X2 are brutally honest, and that's exactly what I want from a pair of reference headphones I use to mix every day.
MATTEO MARCIANO
Award-winning Producer, Engineer, Mixer
John Wick, Pitch Perfect, 2Cellos, Ana Kendrick, Idina Menzel, Disney, Netflix, DreamWorks
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WHAT'S IN THE BOX?
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ENGINEERING DNA
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TECHNICAL SPECIFICATIONS
| Feature | Specification |
|---|---|
| Style | Open back, Over the ear |
| Frequency range* | 8 Hz - 22 kHz sweep 1/3 oct p-p range 10.5 dBSPL +/- 1dB |
| SPL/sensitivity* | 108 dB SPL @ 0 dBu input (0.775 V-rms, 1 kHz RMS, Z-out; 1 ohm) |
| Impedance* | ~32 ohm - works with all devices |
| Speaker type and size | Dynamic, 50mm |
| Magnet type | Neodymium |
| Membrane | Beryllium-coated PET (PVD) and Polyurethane (PU) |
| THD & 2nd* | <0.157% & <0.053% @ 85 dB SPL @ 1kHz |
| Ear pads diameter in/out | 57,5mm/95mm |
| Ear pads material | Acoustic foam with perforated artificial leather and velour |
| Ear cups material | American walnut |
| Headband material | Stainless steel and silicone |
| Cable termination | Detachable 2 meters long Y mini XLR |
| Connector | 3.5mm jack with an adapter to 6.3mm jack |
| Calibration | Unit Specific Calibration included |
| Weight ex. cable | 383 g (0.8 lb) |
| International warranty | 5-year limited warranty |
| Trial period - Money back | 90 days from delivery date when purchased directly from OLLO Audio |
| Product classification | EN 60268-7-IEC-DCLO-32R0-2 |
| *data capturing standard | EN 60268-7 with IEC 60318-1, sweep signal, output 1ohm, 100Hz-10kHz tolerance +/- 1dB, USC calibration disabled |
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The Anatomy of Sound
- Dynamic Neodymium speaker
- 50mm diameter, Beryllium-coated PET (PVD) and Polyurethane (PU)
- 32 Ohms
- 108 dB SPL @ 0 dBu input (0.775 V-rms, 1 kHz RMS, Z-out; 1 ohm) - that makes them work with smart devices too
- Left / right matched speakers (+/-1dB SPL tolerance, sweep, range 100Hz-10kHz in the free field at 1cm distance)
- Replaceable using home tools
- Earpads with outer diameter of 95mm (3.75in), an inner diameter of 57.5mm (2.25in) and a depth of a 20mm (0.8in), +/-2.55mm. Made of artificial leather and velour.
- THD & 2nd <0.157% & <0.053% @ 85 dB SPL @ 1kHz with sweep source measured with IEC 60318-1 ear simulator.
- Variation in frequency response in band from 8 Hz - 22 kHz sweep 1/3 oct p-p range 10.5 dBSPL +/- 1dB using sweep and IEC 60318-1 ear simulator.
- Front-to-back air pressure equalisation controlled with Saati flow resistor of 11.8 Acoustic Ohms.
- Ex-centric and angled speaker in a conical radiation chassis with an optimal sound stage for best translation of instrument positions in stereo or immersive formats.
- Frequency response calibrated for best translation of balance and artificially placed objects in stereo or down-mixed (binaural) immersive projects.
- Clamping force set to achieve target frequency response with industry-standard bitragional diameter of 14.3cm (KEMAR) on IEC60318-4 ear simulator.
- Artificial leather strap and powder coated stainless spring steel are both replaceable using home tools.
- 360 earcups rotation and self adjusting strap for quick and easy head size adjustments.
- 2m long (6.5ft) and easy detachable silicone cable with enameled OFC core to ensure minimal signal distortion and long life.
- Screw-on adapter from 3.5mm to 6.3mm jacks (1/8 to 1/4 inch)
- Mini XLR connectors for the L and R channel.
Calibration is the "final mile" in delivering perfectly flat frequency response. All our headphones are very well tuned out of the box and measured in quality control. By measuring every individual unit we can capture any deviations in sound quality that comes from material tolerances for a specific unit. Calibration fixes these and frequency response beyond what's possible with acoustic design alone. Unit specific calibration can achieve an incredibly low tolerance of approximately ~1dB to the selected frequency target. For illustration purpose, generic software calibrations like Sonarworks Sound ID or Waves NX can only achieve about ~3dB. Unit Specific Calibration plugin comes in AU, VST and AAX format for Mac and Win users and can also be used in systemwide setups like sound source from rogueamoeba. The calibration data file is in XPS format that enables manual export of exact EQ values to any 3rd party EQ plugin or DSP enabled hardware; for example: RME TotalMix, Neumann Mission Control, UA console and others. Calibration includes:
- OLLO USC plugin (AU, VST, AAX)
- OLLO USC file with calibration data compatible with many corrections software solutions.
FREQUENTLY ASKED QUESTIONS
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.
Extra costs, duties or levies:
All EU and US orders include taxes and duties. Orders to other countries exclude taxes; local import taxes or duties may apply at delivery.
Delivery Times:
- standard shipping: 5-18 days.
- DHL or FedEx Express: 2-5 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.
Many of our headphones are serviceable at home. We provide service guides and online calls if required. 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?
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.
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.