Mastering Services
The final step that makes your music compete on a global stage. Precision loudness, tonal balance, and format-specific optimization for streaming platforms, broadcast, and physical media.
What Our Clients Say
"Been going to Lunar Mansion Studios since they first opened and absolutely love it. Matt is the best producer/ recording engineer in the city. 10/10 highly recommend booking!"
— Zoo
"I had an awesome experience recording with Matt. From the moment I walked in, he made the whole process comfortable and professional. He really knows how to bring out the best in your music and pays attention to every detail to make sure the final track sounds clean, polished, and radio-ready."
— John
"Lunar Mansion Studios was great experience. Firstly, Matt is really great to work with! He always pays attention to what an artist wants for their project and makes it happen. He is also great with guiding an artist to a final product."
— Karuna
"This is the best place in the city if you are serious about getting your sound right!"
— C-Hold
"Dudes incredible with the sounds and a made the experience dope and fun. Legit beast with the beats and mixing"
— Austin Thompson
"best engineer , best studio in the city no exaggeration. Matt is a genius it is what it is. - Alonzo Cartier"
— Alonzo Cartier
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Loudness optimization for Spotify, Apple Music, Tidal, YouTube, and all platforms
Tonal balance and frequency correction for every playback system
Stereo enhancement and width optimization
Limiting, clipping, and saturation for competitive loudness
Format delivery: 16-bit/44.1kHz CD, 24-bit/48kHz streaming, DDP for CD manufacturing
Dolby Atmos spatial audio mastering available
Revision rounds included
Album/EP sequencing and spacing available
How It Works
Submit your final mix as a 24-bit WAV or AIFF file with 3–6dB of headroom. We accept files via WeTransfer, Dropbox, or Google Drive.
We analyze your mix alongside reference tracks in your genre to understand the target sound and identify any issues before processing begins.
Precision EQ, compression, limiting, and stereo enhancement are applied using a combination of analog hardware and digital processing.
You receive the mastered file for review. We provide revisions until the master meets your expectations and competitive loudness standards.
Delivery in all required formats — streaming-optimized WAV, DDP for CD, and any additional formats needed for distribution.
Mastering is the final quality control step before your music reaches the public. A properly mastered track sounds consistent across every playback system — from earbuds to car speakers to club sound systems — and meets the loudness standards required by streaming platforms like Spotify and Apple Music.
At Lunar Mansion Studios, mastering is handled by Grammy-nominated engineer Matt O'Neil, who has mastered projects for major labels and independent artists across hip-hop, rap, and pop. His approach combines precision technical processing with an ear trained on thousands of commercially released records.
Remote mastering is available for artists anywhere in the world. The process is simple: you send your final mix file, we master it, you review, and we revise until it's right. Most single masters are delivered within 48–72 hours.

Planning Notes
A few practical details to help shape the right starting point for your session.
Get In Touch
Lunar Mansion Studios is a professional recording studio offering high-end audio engineering, music production, mixing, and vocal recording for artists, creators, and brands. Led by 16x Platinum & 4x Gold, Grammy-nominated audio engineer, Matt O'Neil.