Studio + Services

Welcome to the Red Door Studio. I offer music production and specialise on all types of metal, heavy, hardcore, dark, deep and evil music.

Full music production includes recording, editing, mixing and mastering – or any combination that suits your needs. Whether it is your first low budget demo, an EP or a full studio album I will always strive to make your music sound the way it is supposed to sound!

If you choose to record at home, in your rehearsal room or in another studio I offer my E-Services where you can upload your files for editing, re-amping, mixing and/or mastering. I also assist in the choice of equipment and workflow to help you prepare the best possible tracks for mixing.

Please drop me a request if there is anything I can do for you!

  • Focusrite ISA828 eight channel preamp

  • Focusrite ISA Channelstrip

  • Sansamp RBI

  • Kemper Amp

  • Marshall JCM 2000

  • Mesa Boogie Dual Rectifier 2 channel 90's edition US-version

  • Fender EvH 5150 Mk3 100w

  • Fender EvH Stealth 50w

  • Diezel D-Moll

  • Mesa Boogie 4x12 Rectifier Standard Oversized Guitar Cabinet

  • THC 4x12 Cabinet

  • Pedals by Ibanez, Darkglass, Korg...

  • Mics – C48, SM58, SM57, SM7B

  • Atelier der Tonkunst "RANDI" DI Box

  • TC Electronic Mastering Processor

  • Empirical Labs EL8 X Distressor

  • Dynaudio BM6A plus Subwoofer

  • Gibson Les Paul Studio

  • GranRey "Pulsar" hand built 7 String

  • Ibanez Iron Label

  • 5 String Bass

  • Cubase 6 - 12

  • Wavelab 8

  • A BIG list of both powered and native Plugins

The Man Behind

My name is Nicolas Keller and I am the owner of the Red Door Studio. I grew up in a small hessian village called Rembrücken where my studio is located. I started playing my first acoustic guitar at the age of maybe 6 years old and became fascinated in both heavy music (or what I called heavy back in the days) and sound engineering by the age of around 15. You got to admit – all those shiny buttons look damn cool!

In all seriousness, as much as music is an art form it is also a science and it is incredibly fascinating!

I am a graduate of the Music and Sound Recording (Tonmeister BA Hons) course from the highly regarded University of Surrey, Guildford, England and I majored in the science of analogue summing amplification.

Throughout the years I have been practicing numerous instruments and looking for fresh and innovative ways to improve workflow and achieve the best of results.

Red Door Studio has been work in progress since 2013. There has been a lot of planning, designing and building over the years. In 2017 I finnished building my recording booth, mainly for vocals and both acoustic and electric guitar.

So here we go!


Nicolas Keller

Hauptstraße 46

63150 Heusenstamm/Germany


Phone: +49 (0)176 96977660


USt-IDNr: DE292730033


Website, pictures and logo designed by Marco Klein at Synquadrat

CMS by Patrick Burghard at FISolution

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