Mastering Chain Diagnostic Analyzer
Diagnose mastering chain issues and generate corrective EQ curves from reference data
What You Can Do
You can document your mastering chain's current frequency characteristics, compare your masters directly against professional reference tracks in your genre, identify specific frequency imbalances (brightness, darkness, boomy lows, thin mids), and receive precise corrective EQ curves with exact gain amounts and Q settings. The skill translates technical frequency data and loudness metrics into actionable chain adjustments, helping you optimize for streaming targets (LUFS) while maintaining perceived loudness and tonal balance.
Features
analyze your chain against reference masters to pinpoint tonal differences with specific Hz ranges
receive exact gain amounts (dB), center frequencies (Hz), and Q values for targeted fixes
balance loudness targets (LUFS) with perceived loudness and dynamic range preservation
systematically map your hardware and plugin signal flow to identify problem sources
compare your masters against professional releases in your exact genre for tonal alignment
receive ratio, attack, release, and makeup gain adjustments based on chain analysis
identify whether issues are low-end boom, mid-range muddiness, harsh highs, or presence gaps
Example Output
Input: Your mastering chain (Audient ASP800 > Pultec EQ > Thermionic Culture Phoenix > Weiss DS1 limiter) producing consistently bright masters; reference is Billie Eilish's "Bad Guy" (streaming master).
Output:
DIAGNOSIS: +2.5dB presence peak at 3.2kHz (harsh sibilance match)
CORRECTIVE EQ CURVE:
- Bell EQ: 3.2kHz | Gain: -2.5dB | Q: 2.1
- High-shelf: 8kHz | Gain: -1.2dB | Q: 0.7 (prevent over-brightening)
- Presence dip: 2kHz | Gain: -0.8dB | Q: 1.5 (reduce midrange harshness)
LOUDNESS OPTIMIZATION:
Current: -5.2 LUFS (integrated) | Target: -4.0 LUFS (Spotify)
Action: Reduce peak limiter threshold by 0.8dB; maintain 1dB makeup gain cushion
CHAIN NOTE: Phoenix saturation stage contributing 1.5dB of unwanted harmonic complexity in 4-6kHz range—consider reducing input drive by 2dB
What's Included
- SKILL.md instruction file for Claude's mastering chain analysis workflow:
- Frequency response template: formatted table for documenting chain characteristics and reference data
- EQ curve specification checklist: ensures complete, implementable recommendations (frequency, gain, Q, filter type)
- Reference comparison framework: systematic approach to selecting and comparing professional masters by genre
- Loudness optimization worksheet: LUFS targets, dynamic range, and perceived loudness balancing guide
Who It's For
- Mastering engineers (professional and project studio) troubleshooting chain imbalances
- Music producers working in-house mastering who need objective diagnostic guidance
- Audio engineers optimizing mastering chains for streaming loudness standards
- Studio owners documenting and standardizing mastering chain sonic signatures
- Sound designers and mix engineers setting up monitoring chains for critical listening
Best For
- Diagnosing why masters sound consistently bright, dark, or boomy across multiple projects
- Comparing your tonal output against professional releases in your specific genre
- Troubleshooting excessive corrective EQ moves on certain source material types
- Optimizing chain settings for streaming loudness targets (LUFS) without sacrificing perceived loudness
- Documenting baseline measurements when transitioning mastering hardware or plugins
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