The rabbit hole of trusting sound

SHORT DOCUMENTARY

1. THE CHALLENGE OF (NOT) TRUSTING SOUND
2. IMPORTANCE OF RELIABLE MONITORING
3. USING REFERENCE TRACKS
4. CROSS-CHECKING FOR PERFECT TRANSLATION
5. R&D TO THE BRICK WALL LIMITS

1. THE CHALLENGE OF (NOT) TRUSTING SOUND

Trust and trusting are difficult to establish in this day and age because so many people are working with different setups, in different rooms, and under varied conditions. It’s hard to immediately trust what you’re hearing.

2. IMPORTANCE OF RELIABLE MONITORING

If you’re working with audio, reliable monitoring is essential—there’s no way around it.
You can use studio monitors and account for room acoustics, or you can use headphones.
Ideally, you’d use both. 

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From the video ...

HEADPHONES VS MONITORS

"Studio monitors give you the big picture—it’s like stepping back a few feet and listening to the mix as a whole. It’s about energy, moving air, and feeling the music and the general sense of how your mix is shaping up. But when I need to get into the finer details, I switch to headphones.

Headphones allow for focused listening, helping me pick up on subtle nuances in the mix. They’re essential for precise placement of instruments across the soundstage.

While monitors provide a general sense, headphones let you hear those slight changes that can make an element feel more distinct and in its own space. Personally, I find that I can miss some of these details on monitors but dial them in more accurately with headphones."

- SARA CARTER | Simply Mixing, Mix Engineer & Former BBC Sound Engineer

CRAFTING MIXES FOR MODERN LISTENER

"Our listening experience differs when speakers are in front of us versus when they’re attached to our ears. I have to be mindful of these differences.

Even if I have the best speakers in the world, I need to ensure my mix translates well. While mixing, I constantly reference both speakers and headphones. For instance, if I’m moving something around in the mix, I check on headphones to ensure it moves consistently—in terms of direction, speed, and height. For me, it’s critical to have headphones I can trust and relate to.

That’s why, more than ever, headphones are important. Forty or fifty years ago, we checked our mixes on a mono transistor radio—that’s how people heard music. Whether it was during breakfast in the bathroom, getting ready for the day, or driving to school or work, music was experienced differently back then.

These days, people listen to music through earbuds or headphones, so I have to be acutely aware of how listeners hear their music. It’s crucial to trust that what I’m doing translates well."

- ADAM MOSELEY | U2, Beck, Rush, Kiss, Nikka Costa, Roxette, The Cure, John Cale, Spike Jonze, UCLA and Berklee

THE ROLE OF HEADPHONES IN FOH

"There are two things we need to focus on when doing front of house (FOH) or when you’re on tour. I mean, if you’re on tour with Depeche Mode or Madonna, you definitely have two or three days to set everything up. You’ve got time to listen to what’s going on in whatever venue you’re in.


But when you’re on a tour bus with Thomas Lang on drums, Paul Gilbert on guitar, and all these other incredible rock musicians, it’s a different story. Today, you’re in Seville; tomorrow, Madrid; then Paris. It’s all tour bus hopping. You just jump in. I have my personal playlist of music that I really trust, so I play it in those situations.

Over there, headphones are critical because when I start miking and checking the miking on stage—drums, amplifiers, vocals—it’s not like a keyboard line check. It’s about microphones.

I need to hear what’s going on. For instance, if there’s a frequency at 200 Hz that I keep hearing, I need to know if it’s coming from the actual miking on the amplifier or the venue itself. Headphones are essential for that."


- ENRICO SESSELEGO | Steve Vai, Paul Gilbert

3. USING REFERENCE TRACKS

Monitoring isn’t just about frequency response. You can have a perfectly tuned room and flat speakers, or headphones with a matching frequency response to your eardrum, and yet they’ll sound different due to reflections, air movement, harmonics, and distortions. Understanding these differences is crucial to placing instruments within the soundstage and soundscape. The best way to navigate this is to build your own list of reference tracks. 

From the video ...

USING SPL METER


"When I’m travelling, whether I’m in a guest recording or mixing space, I don’t just trust someone’s preference. I bring my own reference material.

On my phone, I have an SPL meter. I’ll put it on the desk and set it to around 82 dB SPL. Then, I test the room. If it sounds good at 75 dB but starts reacting weirdly at 85 dB, I know its limitations. For example, if I put on a mix I’ve done myself and hear excessive low-mid buildup at 85 dB, or it becomes unrecognisable at 95 dB, I’ll know I can’t mix above 75 dB in that space.

Alternatively, I’ll just use headphones. I know how they sound, and they give me a consistent reference point no matter where I am.

- TOKYO SPEIRS | Walk Off The Earth

STAYING CLEAR ON ARTIST'S VISION


"What’s really important for me is having a clear direction. For instance, knowing how a band wants to sound on their upcoming album and having reference tracks to guide the process.

In my workflow, using reference tracks is crucial. It’s equally important to have headphones or monitors that tell me the truth when I’m comparing my mix to a released reference track.

This helps me aim for the overall sound the band wants for their album. Having the right tools to facilitate that is essential - that’s where my money goes.


- SARA CARTER | Simply Mixing, Mix Engineer & Former BBC Sound Engineer

CALIBRATING YOUR EARS


One of the most important things is calibrating your ears before making mixing decisions. I usually do this by listening to a Spotify playlist of songs I know work well on every system.


If your headphones are poor or have low resolution, you can’t hear what you’re doing properly. That can lead to adding unnecessary elements to tracks
- like using a preamp you didn’t need in the first place, which colours the sound and causes issues in the mixing stage.


Knowing whether something is necessary saves a lot of time and effort. 


- STEFFEN 'SUGAR' HARNING | producer, mixing and mastering engineer, Milk & Sugar DJ Team

4. INDIVIDUAL CALIBRATION

When a mix is finished, it’s crucial to ensure it translates across systems. While a flat frequency response is key, checking the soundscape and instrument positioning requires testing in different rooms and on various devices. The X1 headphones were designed for this purpose. Individually calibrated for a flat response, they also include software that emulates rooms, environments, and target curves, allowing quick cross-checks on a laptop in minutes.

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From the video ...

THE POWER OF CALIBRATION FOR ACCURATE LOW END

"This has happened to me many times on tour. I’d work hard to get the low end right, only to realise later it wasn’t accurate because I couldn’t hear properly. Having a calibrated system that you trust saves a lot of time and ensures better results at the end of the creative process.


I create electronic or dance music, where the choice of the kick drum is crucial. If you make a poor choice at the beginning - when you can't hear whether it's the right kick or not - it will end up costing you a lot of time later in the production.


The new headphones sounded great even before I set up the software. I could hear mixing mistakes and identify when everything was right. After setting up the software, the difference was huge. I thought I was hearing 100%, but with calibration, I realised it was only 80-90%.


The bass boost on my headphones impacted how I perceived the low end, especially in electronic music. Calibration balanced the sound, making it easier to judge lower frequencies without affecting the mids or highs as much. That’s the big difference the X1 calibration made for me."


- STEFFEN 'SUGAR' HARNING | producer, mixing and mastering engineer, Milk & Sugar DJ Team

NUANCES MATTER!

"For those outside our industry, nuances might not seem important, but they mean everything to us.


When I first unpacked the headphones and tried them without calibration, I was already impressed. But once I used the calibration algorithm, the improvement was undeniable.


Whatever you want on matching with my pair was actually a little improvement that I felt right away. I felt that the little nuances, like you said to me, are not that little, so it makes a difference. "


- ENRICO SESSELEGO | Steve Vai, Paul Gilbert


PLUGIN INDEPENDENT


"Adding calibration filled out the low end even more, providing a balanced sound. It’s a really useful tool to have.


Plus, you can apply the calibration curve using any standard EQ plugin, which is brilliant if you’re an engineer who travels between studios. You don’t need to install a plugin on someone else's system—just call up an EQ, dial it in, and save it as a preset. That’s a unique and great feature."


- SARA CARTER | Simply Mixing, Mix Engineer & Former BBC Sound Engineer

TRUSTING YOUR GEAR WHEN TRAVELING

"The demand to work outside the studio is getting higher and higher. If I’m traveling and need to rely on any equipment, it’s going to be the X1.


Apart from being a great headphone, I have the security of it being calibrated, so I have the software, and if I need it, I can put it on the DAW and know the headphone is flat response—it’s not interfering where it shouldn't be, which is very important for me as a mastering engineer.


As a mixing engineer you might need more creativity, more emotions - but as a master engineer, I like things to sound flat, you know? I don't need emotion; the emotion was created already before."


- FERNANDO DELGADO | Grammy winning mastering engineer

5. R&D TO THE BRICK WALL LIMITS

Neutral and flat sound signature was perfected in close R&D collaboration with 25+ award winning audio engineers working with Adele, U2, SIA, Lady Gaga, Usher, Depeche Mode, Sting, Björk and many more.

STARRING

Sara Carter
Adam Moseley
Enrico Sesselego
Tokyo Speirs
Steffen 'Sugar' Harning
Fernando Delgado
Adrian Parzentny
Seton Daunt
Aamir Yaqub
Carlos Larez

Thank you!

X1 PRODUCING AND MIXING STUDIO HEADPHONES

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