Mix bus vs stems
Most releases master from one stereo bus (interleaved WAV/AIFF). Stems—groups like drums, bass, vocals, synths—are optional but help if you need balance tweaks post-master without remixing. Tell us upfront if you might request stem re-exports after the master; that affects how we print intermediate files.
If you send stems, either deliver a final stereo mix or a stem set that sums to the same balance as your reference bounce. Avoid silent pads or duplicate reverbs on every stem unless intentional.
Suggested stem groups
- Drums (split kick/snare only if the mix demands it)
- Bass and sub (split for some EDM)
- Lead and backing vocals
- Instruments/synths (not twenty ungrouped tracks)
- FX/sends as one aux when audible in the mix
Podcast or speech usually needs only stereo; see chapter markers in podcast sessions if you mark chapters during recording.
Technical specs
One sample rate end to end (44.1 or 48 kHz; 24-bit WAV preferred). No MP3 between mix and master. All stems same start/end; zero offset.
| Field | Guideline |
|---|---|
| Naming | Track01_Drums.wav, consistent prefix |
| Headroom | Peaks well below 0 dBFS on mix bus |
| Dither | Not required on 24-bit delivery |
| Labels | Title and version in folder name |
Attended mastering (€155 for two hours) suits live A-B against references—similar to reference tracks for mix briefings.
Rates and revisions
Per track: €82; EP up to five tracks €280. Mastering revisions: 2 rounds for level/tonal tweaks on the same mix version. A new mix upload is new material.
VAT 21 percent is included in listed prices. Net amounts on request via contact; B2B payment within 14 days.
Delivery and storage
Send via upload link or drive to Haarlemmerweg 239. Before shipping, play all stems together—clicks or phase issues are easier pre-session than after.
We archive masters for 24 months. Request DDP or WAV for distribution in time; see disclaimer for general limits on artwork rights. Label drives clearly if you drop them off in person.
Loudness for streaming
Spotify and peers normalise playback; heavy pre-limiting buys little and restricts tonal work. Say if you want a quieter master than your reference or a compact dance feel.
Broadcast or sync may need other specs—name the platform early. We do not auto-match every regional norm without a brief.
Preparing an attended session
Book attended time if you want to debate micro-dynamics. Bring references on the same medium as the mix (not only Bluetooth). Allow travel: We are at Haarlemmerweg 239, a short walk from the Haarlemmerweg stop (GVB bus 22 towards Indische Buurt). From Amsterdam Sloterdijk station, allow about twelve minutes on foot via Haarlemmerweg. On-street paid parking is available; you can park bicycles in front of the building. The studio entrance is at street level beside the wide front windows..
We are open Tuesday–Friday 09:30–21:00, Saturday 10:00–17:00, closed Sunday and Monday.; book via contact with track title and target date. 40 percent deposit on first booking per terms and conditions.
Delivery checklist
- Final stereo mix or full stem set, equal length
- 24-bit WAV, one sample rate, no clipping
- Short brief: genre, references, do-not list
- Questions: [email protected] or 020 261 3844
- Optional: Mastering for rate detail
After mastering, see services for other steps in the chain.
