London mastering for underground, dance, indie, and electronic releases
Independent
mastering
for underground music
For artists who want direct conversation, precise judgement, and records that still hold their identity on club systems, headphones, cars, and vinyl.
01 Direct
Speak to the engineer Questions go straight to the person working on the record.
02 Room
Built to hear translation Dutch & Dutch 8c monitoring, Prism Sound conversion, and controlled acoustics.
03 Services
Match the music Stereo, stems, vinyl, and mix help are there for different situations.
04 Playback
Beyond one target Judged for clubs, headphones, home listening, cars, and vinyl plans.
What ESM actually offers
Choose the service that fits the track
If the mix is already there, stereo mastering keeps things simple. If it needs a little more help, stems, vinyl preparation, or mix support are there for that reason.
Mastering
Stereo Mastering
For finished mixes that need the final master, translation check, and delivery files.
More control
Stem Mastering
For records that are close, but still need targeted tone or balance work.
Format pass
Vinyl Mastering
For releases being cut to record, with side length and low end handled carefully.
Mix support
Full Mix and Master
For productions that need the mix and final master shaped together.
Monitoring and judgement
A listening room built for translation
ESM works from an acoustically treated space built around Dutch & Dutch 8c monitoring, Prism Sound conversion, and a headphone reference chain with Focal Clear Professional and the Topping A70 Pro. The aim is simple: hear the low end, upper mids, width, and limiter movement clearly enough to make confident calls.
Low end
Sharper judgement in the sub and low-mid region, where club records often fall apart first.
Top end
Better control over brittle highs, vocal edge, and limiting stress before the record leaves the room.
Service
Clearer advice on whether the mix needs a stereo master, stems, vinyl preparation, or mix work first.
Artist feedback
I can’t lie I was really anxious about handing over my 3 tracks after spending so long mixing them myself but working with El Stray was honestly the best decision I made for my release.
Maya Solstice, January 2025 release feedback
Read the full quote
I can’t lie I was really anxious about handing over my 3 tracks after spending so long mixing them myself but working with El Stray was honestly the best decision I made for my release. I chose stem mastering because I was really struggling to fix some muddy frequencies in the low-mids and get more clarity overall. I actually asked for a full mixdown first but El Stray actually said it’s not needed and it saved me some money!! He not only addressed those issues easily but also enhanced elements I hadn’t even considered to be an issue. He brought out this warmth and presence in the vocals and made the drums knock without sacrificing the track’s dynamics. Not sure how he did that with the drums but they sound so clean and the punch is absolutely wild, especially how they still sound so good around and don’t interfere with the other elements anymore somehow e.g. vocal and synth in the mids. What really stood out for me though was the collaborative feel and friendly guidance; he actively listened to my vision, offered insightful suggestions (which actually taught me a thing or two!), and was patient with 2 revisions until it felt perfect for me. This is what sets ESM apart from other engineers for me – you aren’t just another customer in a queue and he vibes with your tracks. My final masters have depth, clarity!!!!, and professional polish that elevates the whole release. Hiiiighly recommended.
Help and guidance
Helpful reads before you send
Export notes, mastering basics, and order guidance if you want to check things before sending files.
File prep
Exporting Guide
Get the files clean, organised, and ready before the export leaves your session.
Process
Order Process FAQ
Clear answers on turnaround, revisions, delivery, and what happens after transfer.
Ready to move?
Get the master moving.
If the service is clear, book it. If you are unsure, send a note and a private link and I can point you in the right direction.
d (@) elstraymastering.com
