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Ultra Mastering Send Your Track

Precision Engineering for Electronic Music

YOUR SOUND IS THE ONLY THING STANDING BETWEEN YOU AND THE MAIN STAGE.

Elite Mix & Mastering for Tech House, Techno, and Big Room producers who refuse to sound like amateurs. We turn good ideas into label-ready weapons.

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MUSO.AI Top 25% Engineer

VERIFIED ON MUSO.AI

TOP 25% MASTERING ENGINEER

The Engineer

I'm David. I don't just 'process' audio. I translate emotion into sound.

With over a decade in the studio and official accreditation from Apple Digital Masters, I've obsessed over the technical precision required for modern dance music.

My goal isn't just to make it loud. It's to make it translate. Whether it's a beach club in Ibiza or a festival mainstage, your music will sound exactly as intended.

500+ Tracks Mastered
Top 25% mastering engineers
Apple Digital Masters Certified Studio
WARNER ADA Distributed

The Portfolio

This is my sound

Our Arsenal

Services

Mix & Master

Complete production finalization

For producers who want the highest possible sonic standard. We handle every detail of the mix.

  • Stem-by-stem surgical mixing
  • Advanced Digital Workflow
  • 100% Money-Back Guarantee
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Most Impactful

Stem Mastering

Precision control

The sweet spot. Send 8-12 stems (Kick, Bass, Lead, etc.) for perfect phase alignment and punch.

  • Kick-Bass separation fix
  • Vocal presence enhancement
  • Maximum competitive loudness
  • 100% Money-Back Guarantee
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Mastering

The final polish

Your mix is 90% there. We provide the final 10% that makes it ready for Beatport Top 100.

  • Apple Digital Masters certified (Since 2024)
  • Phase & stereo field correction
  • Clarity & tonal balancing
  • 100% Money-Back Guarantee
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Not sure what your track needs?

Get a free consultation. Send us your track and we'll tell you honestly if it needs a full Mix & Master, Stem Mastering, or just a final Master.

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The Gear

Mastering Equipment

ZERO AI · 100% HUMAN EARS

Monitoring

Genelec The Ones 8341

Interface

Universal Audio Apollo Twin X

Acoustics

Acoustically Treated Room

Reference

beyerdynamic DT 900 Pro X

Apple Digital Masters

Certification

Apple Digital Masters Certified Studio (Since 2024)

Real reviews from real EngineEars clients.

Producers trust
Ultra Mastering
with their sound

★★★★★

"David Muñoz is one of the best mix master in the music industry! I can trust him even by being blindfolded! I absolutely loved working with him on my project and I definitely recommend him for your future projects!"

@alexorlando3008
2 months on EngineEars
★★★★★

"I want to thank David, who was exceptional with me. Our exchange was professional and very friendly. Everything I explained to him was applied perfectly. I recommend him to everyone — he will give you the best mix/mastering possible! He made my music, as I told him, 'magical,' because he understood exactly where I wanted to take my track."

@djgth71
5 months on EngineEars
★★★★★

"Huge shoutout to David for the mastering on my latest track he brought the sound to life. Clean, punchy, and exactly how I imagined it. Appreciate the attention to detail and the vibe. Highly recommend!"

@lufomusic
1 year on EngineEars
★★★★★

"First time using the mix and master service with ultramastering. I have to say, I am very impressed with the result. It is definitely worth it, I recommend it 100%, I will be coming back with more projects. Thank you, David."

@aaronminasmusic
1 year on EngineEars
★★★★★

"Excellent Engineer! My rough mix went from zero to hero! This engineer was very informative, helpful, and always available for questions. He completed my mix in a very short time, including a revision! This whole process was so smooth and easy. Worth every penny."

BNTWTR
1.5 years on EngineEars
★★★★★

"So happy with how my master turned out. David was able to fix up every small issue I had with the song and had an extremely fast turnaround time. He is extremely skilled at what he does, and really was able to give my track the sound I was looking for. Will absolutely be working with David again!"

@maxadams7474
1 year on EngineEars
★★★★★

"Really satisfied with Mixing and mastering. David really knows what he's doing music-wise, also a really flexible and great communicator willing to go the extra mile. Anyone looking for this service, that's the guy you're looking for!!"

Royce Karam
1 year on EngineEars
★★★★★

"David was able to provide a pro sounding mix/master and carried out all my requests neatly. He managed to find time to work also during unforeseen difficult times. He handled my revisions with care and good pace. This is my second time working with him and he did not disappoint."

@makswa
1 year on EngineEars

Why We Are Here

The Problems We Solve

BEFORE

"It doesn't sound professional yet."

AFTER

We bring your track up to release-ready, reference-level quality — the polish that separates a demo from what a record label wants.

BEFORE

"I don't know if it's actually ready to release."

AFTER

We give you a straight answer. No guessing, no second-guessing — you'll know exactly where your track stands before you hit publish.

BEFORE

"I can't tell what's actually missing."

AFTER

We diagnose the specific gaps holding your mix back — the things your ears can't catch after 100 listens, but a trained ear and reference-matched process can.

BEFORE

"My last engineer didn't get my vision."

AFTER

We take the time to understand the sound you're going for before touching a single fader. Your track, your vision — sharpened, not replaced.

BEFORE

"I'm stuck mixing the same track for weeks with no progress."

AFTER

We take it off your hands and execute — so you get your time back to focus on writing, not endless revisions.

BEFORE

"I'm scared I'll miss my shot with a label or a DJ."

AFTER

We get your track to the level labels and DJs actually expect, so when the opportunity comes, you're ready for it — not scrambling.

You don't need another plugin.
You need someone who knows what "ready" actually sounds like.

Do the math

What chasing the mix yourself
is actually costing you.

Four numbers. Move the sliders and watch it add up in real time.

8 h
4
1
6
Tracks you're not releasing
3
36 a year sitting unreleased
Hours lost to mixing limbo
18 h
≈ 0.8 full days a month
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Stop losing time to the mix. Start losing tracks that aren't finished.