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.

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.

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