Mastering Studio Freising, Bavaria, Germany

The GKG Mastering studio - Designed by Mueller-BBM the leading acoustic engineering company - is able to acoustically challenge even the most renowned competition. With a perfect frequency linearity and lowest reverberation time it is a truly world-class workplace. To make use of these perfect conditions, some of the best speakers in the world are available: Revel Ultima Salon 2, Bowers & Wilkins Diamond and KEF Blade.
The electric power conditions on site are very stable and clean, complemented by the highest quality cabling. This perfectly balanced power system enables an excellent signal-to-noise ratio and perceived dynamics, as well as enabling the outboard to truly shine.
To achieve the highest possible flexibility, the combination of cutting-edge digital technology with the most acclaimed outboard is available. Every piece of hardware at the GKG studio has been meticulously adapted and customized to complement the mastering chain perfectly. The audio converter system, as well special mastering software are custom built, in-house designs, and deliver a very crisp and natural sound with up to 64 bits resolution.
These optimal listening conditions are complemented with a relaxed atmosphere, a light design by Occhio and abundant parking possibilities.
We have developed a unique technique in cooperation with vinyl record cutting engineers, that enables to record an optimal vinyl record master parallel to the CD/digital distribution master., This process is used in every project, and combines and transports all positive attributes of the master formats. It guarantees a dynamic and loud, yet broad sound on vinyl record and delivers masters that have the same dynamic sound and groove on all media, guaranteeing a high recognition value.

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Mastering Studio Szentendre, Budapest, Hungary

Mastering Studio Palma de Mallorca, Spain (Identical to studio Freising)

Monitor Systems

Bowers & Wilkins 802 Diamond S2 (Freising)Revel Ultima Salon 2 (Palma)MT-Audiodesign Extreme Class-AHeadphones: Audeze, Stax, Meze


Sontec MES 430Avalon 2077 Mastering EQChandler Curve BenderBarry Porter Mastering EQFocusrite Blue 315Mk||Epitome Audio Tilt FilterLauterleizer 3 Band Mastering EQ2 Boutique Baxandall EQ


Elysia Alpha Compressor 1st. EDElysia Alpha Compressor 2nd. EDKnif Vari-Mu IIShadowhills Mastering Comp. Class A Ed.Rupert Neve Portico || Master Bus ProcessorChandler Ltd, LTD-2Me - 1. series Neve ironsRS 124 EMI/BBCPM Fairchild 670Epitome Audio AmbrosiaNeve 2254C Mastering ModificationMaselec MLA-4 Expander/CompressorChiswick Reach Valve CompressorManley Vari-Mu Mastering EditionNTP modules rackedNeumann modules racked

DA/AD Converter

ARDA Flagship Audio ConverterCustom ESS Sabre 64Bit Reference ConverterRME ADI-2Pro

Vinyl Playback

Transrotor DarkstarOrtofon Rondo Blue MCEpitome Audio Class A Phono Preamp


Mogami NEGLEX Reference for all connectionsShielded pure copper Powercable

DAW & Software

Masterpiece No. 1 - high-power mobile DAW
Master Manufaktur
Steinberg - WavelabSteinberg - NuendoAvid - Pro ToolsWeiss - SaraconFlux - everythingFabFilter - everythingWaves - everythingDMG Audio - everythingPlugin Alliance - everythingiZozope - everythingSonoris DDP Player OEM

Ludwig - Mastering Engineer

Ludwig Maier is a multi-award winning mastering engineer, that has over three thousand international productions of all musical genres under his belt. The scope of his experience in the audio industry is extensive and diverse; he has worked for Major and Indie labels, production music libraries like Sonoton, songwriting teams like Truva Music and hundreds of independent producers, bands and recording studios.
In 2007 he founded GKG Mastering and by now thousands of songs have been mastered with a lot of success.
“Ludwig’s master celebrates the mix” Timothy Auld
One of the most defining factors about Ludwig’s work is that he puts the same level of love, commitment and energy into every song he masters: 100%. A true perfectionist, he always seeks to transport the emotional and conceptual message of the music into a master- instead of simply making it louder.
Such a high standard is made possible through many years of experience, absolute dedication, studios with meticulously perfected acoustics and monumental analog hardware and the newest inovations in digital audio.

Christian - Mastering Engineer

Joe - Mastering Assistant

Marcus - Quality Control

René - Mixerman

Mike - Project Manager South East & Asia

Steinberg Wavelab 9.5 Release Promo Video