Mastering for Vinyl: Plant-First File and Test Guide
Master for vinyl against the chosen cutting engineer or pressing plant's current specification. Lock format, speed, side sequence, exact timings, source resolution, version names, gaps, and references before delivery. Let the engineer manage medium constraints instead of applying internet EQ recipes. Approve test pressings for repeatable audio issues, while preserving a separate streaming master and documented source archive.
Lead visual
Streaming master readout
Loudness meter
Integrated LUFS
-14target
True peak
-1dBTP
Bit depth
24bit
Waveform after normalization
Direct-to-fan · Manufacturing
Playback spec map
Decision
Master for translation, not just for maximum loudness.
Evidence
LUFS, true peak, file format, headroom, codec behavior, and the final exported master.
Risk
A master that feels exciting in the room can distort, turn down, or lose impact after delivery.
Good outcome
A master that survives platform normalization and still feels intentional.
current high-resolution preference in cited plant guidance
streaming and vinyl versions when the engineer requests both
generic internet recipes treated as plant specifications
versioned source, delivery, and approval record
Key takeaways
- Choose the plant and format before final mastering.
- Supply exact side sequence and timings.
- Follow the selected engineer's current file specification.
- Keep streaming and vinyl deliverables unmistakably versioned.
- Approve repeatable test-pressing audio issues, not print appearance.
What belongs in the vinyl master contract?
Velveteen plant-first specification
Eight fields that travel with the audio
Format
Diameter, speed, sides, weight/options where relevant, and chosen plant/cutting engineer.
Defines the physical system the engineer is actually cutting for.
Program
Side A/B sequence, exact titles, timings, gaps, starts, fades, locked running order, and content notes.
Prevents side, sequence, or transition assumptions from reaching production.
Source
Approved mix source, native resolution, channel count, sample-rate history, and checksum/archive location.
Makes the delivered master traceable to the approved mix.
Delivery
Requested file type/resolution, one-file-per-side or track convention, naming, transfer, and deadline.
Converts plant guidance into a versioned handoff rather than a guess.
Treatment
Engineer-owned notes for level, sibilance, low end, phase, spacing, and any approved alternate.
Keeps medium decisions with the qualified person hearing the cut.
Reference
Listening reference, intended transitions, deliberate noises, and differences from the streaming version.
Separates intentional source details from possible production faults.
Approval
Proof/test version, listening protocol, approver, findings, decision, date, and recut responsibility.
Creates one defensible acoustic go or no-go record.
Archive
Final source, vinyl master, streaming master, notes, approvals, identifiers, and future repress instructions.
Allows a future repress without reconstructing undocumented choices.
How should the test pressing be approved?
| Record | Decision rule | |
|---|---|---|
| Identity | Copy number, side, track, exact time, player/cartridge, listener, and date | Reject vague reports such as 'side B sounds wrong' |
| Finding | What is heard, how it differs from source/expectation, and severity | Separate medium character from a reproducible defect |
| Repeat | Other copies and playback systems that reproduce the same issue | Compare independent notes before aligning opinions |
| Disposition | Approve, ask the plant, recut/retest, or accept documented variance | One named owner sends one consolidated response |
Do not remaster from a plant blog alone
Published plant guidance helps frame the conversation, but the chosen engineer controls the actual cut. A rule written for DMM, one diameter, or one vendor workflow may not apply to lacquer cutting or another plant.
connect the approved physical master to the broader release gate
Which sources control vinyl audio delivery?
Frequently asked questions
Do I need a separate master for vinyl?+
Often, but the cutting engineer should decide. Vinyl side length, level, low-frequency stereo content, sibilance, sequence, speed, and program material interact. Preserve the approved streaming master, ask the chosen engineer what changes are required, and create a clearly versioned vinyl deliverable rather than applying a generic preset yourself.
What audio format should I send for vinyl pressing?+
Send exactly what the selected plant or cutting engineer requests. Disc Makers currently recommends 24-bit/96 kHz WAV, while Pirates Press prefers high-resolution 24-bit WAV and rejects common lossy delivery formats. These are vendor specifications, not universal rules. Do not upsample merely to display a higher number.
How many minutes fit on one side of vinyl?+
There is no single safe number. Diameter, speed, desired level, low-frequency energy, stereo width, sibilance, and program dynamics affect the cut. Plants publish format-specific guidance and warn that longer sides can reduce level and dynamics. Send exact side timings and ask the engineer to approve the proposed sequence.
What should I listen for on a vinyl test pressing?+
Check the correct program and order, starts and endings, gaps, left/right orientation, level consistency, distortion, sibilance, skips or repeats, noise, and any issue at an exact side/track/time. Compare multiple copies on multiple maintained players, log independently, then escalate only repeatable findings that differ from the approved source or expected medium.
Does a vinyl test pressing approve the artwork and color?+
No. Pirates Press explicitly defines its test pressings as acoustic-quality approval, not final print or color approval. Review artwork through the manufacturer's separate template and proof process. Preserve both approval records, because an accepted test can govern audio while an accepted PDF or physical proof governs printed packaging.
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