I&S｜OUR SERVICES

MASTERING STUDIO

CH MASTERING

At CH MASTERING, every project is approached with precision, sensitivity, and respect for the artist’s intent.
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Our process is built on communication and service — open feedback, transparency, and reliable turnaround.

All masters are delivered to current loudness and format standards across streaming, CD, and vinyl.
Online mastering suits singles, remixes, and smaller projects that need efficiency without compromise in quality.
Each master is handled personally, reviewed in multiple listening environments, and finalized for release.

Every project is unique — it deserves focus and a dedicated touch.
We approach each work with open ears, flexibility, and a musician’s mindset.
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+ Mastering is teamwork: a dialogue built on trust and shared intention.

Daniel Constantin

Daniel Constantin is a Swiss mastering and recording engineer, specialising in acoustic genres such as classical, jazz, folk, and contemporary music.
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+ Learned the mastering craft with Wolfgang Rüfenacht, Jean-Claude Gaberel, F. Tischmeyer
+ Studied at the Zurich University of the Arts (ZHdK)
‍+ Worked 7+ years as sound engineer - Paul&Henri Carnal Hall
+ Working 12+ years at ImagoMusica – Images & Son
+ Member of the VDT (Verband Deutscher Tonmeister)

His approach combines technical precision, musical sensitivity, and a deep respect for artistic intent, shaped by years spent recording and mastering acoustic music — from early music repertoire to contemporary, jazz, experimental noise and electroacoustic creations.

Mastering is the art of minimalism.
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It begins with listening — not only to the music, but to the artist behind it.
It’s built on dialogue, trust, and shared understanding.
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When the artist’s intention is truly heard, emotion flows naturally, and the music speaks for itself. It begins with an intuition — and ends with an evidence.
And quite often, mastering becomes nothing more than a precaution.

Digital Release · CD · Vinyl

Every project begins with listening. We enhance depth, tone, and focus through subtle, precise adjustments — keeping the integrity of your mix intact.

Masters are delivered in all standard formats, optimized for streaming, CD production, or vinyl cutting.

• Macro Mastering — minimal processing, maximum impact.

• Custom-Tailored — each track refined individually, in open communication with the artist or producer.

• Fast Turnaround — efficient delivery without compromise.

• Accessible & Professional — high-quality results at transparent rates.

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Submit a project

Including Hi-Res Mastering (DXD / DSD / 384 kHz)
We specialize in re-mastering classical, acoustic, jazz, folk, and experimental recordings. Older productions or archives are carefully restored and prepared for modern distribution formats, with improved clarity, tonal balance, and spatial definition — always respecting the original sound.
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• High-Resolution Capture — DXD, DSD 512, or high-rate PCM for full detail and
authenticity.
• Vinyl-Ready & Digital-Optimized — prepared for both analog and digital media.
• Ambient Restoration — subtle retrieval of space and reverberation lost in earlier transfers.
• Analog & Digital Sources — renewed without altering their musical character.

Stem Mastering Service – Ideal for all genres, with a focus on classical and acoustic music:
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• Genre Flexibility: Tailored mastering from stems for any style, more flexibility.
• Classical & Acoustic Expertise: Preserves natural dynamics and tone.
• Analog Summing: when it suits, adds a unique texture for a more cohesive sound
• External Reverb & Ambiance Control: Custom reverb and precise ambiance adjustments fine-tuning, for enhanced sonic depth.

CH MASTERING

Why Professional Mastering?

‍Mastering ensures your music sounds balanced, consistent, and true across every playback system — from high-end speakers to streaming platforms.
It provides the final level of control over tone, dynamics, stereo image, and loudness, guaranteeing your work meets professional release standards.

At CH MASTERING, every project benefits from an accurate listening environment, precise signal path,
and experienced balanced musical judgment, shaped by spending years in real acoustic spaces with live acoustic music.
We work in standards format as well as high-resolution format, providing release ready masters for

+ CD
+ Vinyl
+ Digital distribution
+ Audio for video

We following EBU / ITU loudness standards and industry best practices.
ISRC code management, metadata, and DDP preparation are included to ensure your release is technically correct and globally compatible.

Our approach combines
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+ technical accuracy
+ musical sensitivity
+ reliability

We ensure your music translates faithfully, everything is heard the way you intented it.

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ONLINE MASTERING

+ High-quality mastering remotely — quick, reliable, and true to your mix.

+ Macro Mastering: Minimal intervention, maximum effect — preserving the soul of your music

+ Communication: A musician-minded approach, with open communication throughout the process.

+ Fast Turnaround: Master v1 - Revision v.1 included

+ Affordable & Professional: Premium mastering at a fair and transparent rate.

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MASTERING FOR ACOUSTIC GENRE

+ Designed for classical, jazz, and acoustic music.

+ Focused on ambience matching (digital, Concert Hall playback capture), macro-dynamic management / enhancement, and natural tonal balance, silence management & feel

+ Stem Mastering I Analog Sum I Blending spots mics and main array

+ High-Resolution Analog remastering up to 384 kHz DXD or DSD512

+ Shaped by years of trained ears in classical music

STEM MASTERING

+ Stem Mastering For projects requiring deeper control of balance, tone, and spatial coherence. Ideal when mix adjustments are still needed at the mastering stage.

+ Analog Sum summation and capture at higher SR resolution, avoids upsampling, improves transient definition.

AUDIO FOR VIDEO - Acoustic

Audio for Video – Live Acoustic Service

+ budget friendly & designed to improve and finalize the sound of video projects featuring acoustic or classical performances, and beyond.
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+ provide a fast, musical remaster that enhances recordings made by non-specialized or live sound engineers, ensuring pleasant tone I focus I ambiance rework.

ANALOG + DIGITAL

+ Speakers

GMS - 3 way AMT Heil, Davis 20DE8
concept I Design I Built by JC Gaberel

+ Amplification

+ Headphones

+ Playback

Amplification 2x Mimetism pre-amp I Amplifiers I PL432
Cabling - SSC102 - by JC Gaberel
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Stax Alpha, Stax tube preamp
JPS Labs Abyss

various
Weiss Man301 CD player
Weiss DAC2
ProjectCarbon RPM9 - Rowen Pre
Rowen AT1, Hyperion 938,
Stenheim Alumine (Jean-Claude Gaberel)

+ Compressors

Tube

HCL Varis
custom transformers I wiring

Tube

custom CK1 inspired - VariMu
Sowter I Lundahl I Telefunken transformers

Solidstate

Massenburg GML 2030

Solidstate

Elysia Xpressor

Solidstate / Tube

Millennia TCL2 Opto - MAST Option

+ EQ

Tube

HCL OZ EQ
custom transformers I wiring

Solidstate

Millennia NSEQ4

+ Mastering Console

Dutch Audio IMC2

+ DRC

Acourate 64bit 44.1KhZ to 384KhZ

+ ADC DAC

AD Merging Tech HAPI - Custom PSU -
Premium 24/384 I DSD
DA Analog loop + monitoring - Merging Hapi
Premium 24/384 I DSD

+ DAW

Pyramix 14 Mascore

+ Plugins

Weiss, Flux, MAAT, DDMF,...

+ Room Acoustic

precisely tuned and controlled listening environnement.

A mastering room is more than a space — it’s an instrument.
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At CH MASTERING, every element is crafted for precision work. The monitoring system features custom three-way loudspeakers designed by Jean-Claude Gaberel, who also conceived the room’s acoustic architecture.This synergy provides linearity, detail, and spatial coherence, ensuring reliable and consistent translation — allowing immediate, in depth precise work on every project. Our analog chain combines carefully selected gear from Dutch Audio, Millennia, Weiss Engineering, GML, and Elysia, alongside custom-built tube units tuned to our own standards.

High-resolution analog loop capture up to 384 kHz DXD and DSD512 preserves the full integrity of the analog path. Everything here serves a single purpose: to let the music flow.

RATES

+ Online Mastering

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For singles, EPs, and smaller projects.
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+ 1–3 songs → CHF 85.– / song
+ 4–10 songs → CHF 80.– / song
+ Additional songs → CHF 70.– / song
+ Analog revision from new mix file → CHF 50.– / song

Maximum song length: 8 minutes — longer pieces are billed proportionally.
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24-hour express option available (+50%) depending on schedule.

Additional delivery formats:
+ Vinyl master preparation → CHF 14.– / song
+ Alternate version or sample rate / codec (FLAC, MP3, ADM, 192k, 384k, DSD, etc.) → CHF 10.– / version
+ HiRes analog re-capture → CHF 20.– / version

+ Stem Mastering

+ For projects that need refined control of balance, tone, or space.2 stems → + CHF 15.– / song
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+ 3–8 stems → CHF 90.– / hour Recommended when mix balance still requires detailed shaping at the mastering stage.

+ Analog Summing - 3–8 stems → CHF 120.– / hour Recommended when mix balance still requires detailed shaping at the mastering stage.

+ HighRes capture included, part of workflow.

+ Attended Mastering

In-person sessions with real-time communication and listening.
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CHF 120.– / hour (minimum 2 hours)
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Presence recommended at the start (1–2 h) and end of session (max. 2 persons).

Includes mix feedback and optimisation if required.
24-hour express (+50%) subject to availability.

+ Audio for Video

HCL Varis
custom transformers I wiring

+ Classical & Acoustic Music / Re-Mastering

Tailored mastering for orchestral, chamber, or solo repertoire, from early music to contemporary works, Jazz, folk music.
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Includes ambience control, tonal adjustment, and dynamic balance optimised for acoustic integrity. Because each work differs in length and structure, quotes are prepared individually — please write to discuss your project.

+ Independent & Budget Projects

For independent artists or limited budgets.
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Send your request, budget, and 2–3 mixes via Swisstransfer — we’ll find a fair solution together.