How to Improve Your Mix: 10-Point Checklist Before Mastering

Written by Klaus™ · Edited by Michael ChristopherTrackScore's AI Analyst·March 24, 2026

To improve your electronic music mix before mastering, check these 10 areas: sub-bass levels (target ~27% sub-bass / ~54% bass on the % linear-power metric for general electronic music, with low-mids kept to ~6%), overall frequency balance across 7 bands, loudness (-12 to -18 LUFS for pre-master), dynamics (6–12 dB crest factor), stereo width with mono-compatible low end, arrangement energy flow, and headroom. Most issues are fixable in one session with the right diagnostic data.

This checklist is built from real data. After analyzing hundreds of electronic music tracks at TrackScore™, we see the same issues repeatedly. Here's what to check — in priority order — before you send anything to mastering.

The 10-Point Mix Checklist

1. Tame Your Sub-Bass

The #1 problem we see. The average upload has elevated 250–500 Hz energy — the mud zone (ideal ~6% on the linear-power metric) is the most common culprit. High-pass filter pads, leads, and synths to clean up body resonances in this zone. Your dedicated sub element and bass line define the real low end.

Quick test: Solo everything below 250 Hz. If it sounds like a wall, you have too much. For the full breakdown, see our frequency balance guide.

2. Check Your Full Spectrum

On TrackScore's spectrum metric — each band as a share of total power — a balanced master is naturally low-end dominant (roughly 80% sits below 250 Hz), and the mid range (500–2,000 Hz) reads as a single-digit share even on professional tracks. So don't chase a big mid number. The real spectral trap is the low-mid “mud zone” (250–500 Hz): when kick body, bass harmonics, and pad warmth stack up there past ~11%, the mix turns boxy and your leads stop cutting through.

Target: Match the 7-band ideal profile for electronic music.

3. Hit the Right Loudness

Your pre-master mix should sit between -12 and -18 LUFS — quiet enough to give your mastering engineer headroom. If you're self-mastering for club play, your final master should hit -6 to -8 LUFS. Anything louder than -6 is almost certainly over-compressed.

Important: Spotify, Apple Music, and YouTube all normalize playback to around -14 LUFS. Pushing louder gains you nothing on streaming and costs you dynamics. Read the full LUFS targets guide for platform-specific numbers.

4. Preserve Your Dynamics

Target a 6–12 dB crest factor (peak-to-RMS ratio). Too little dynamic range makes your track sound flat and fatiguing — when everything is loud, nothing feels loud. Too much means quieter sections disappear on phone speakers.

Check: Does your drop feel louder than your breakdown? If not, your dynamics are too compressed. Back off the master bus limiter and use per-element compression instead.

5. Fix Your Stereo Image

The critical rule: everything below 150 Hz should be mono. Stereo sub-bass causes phase cancellation on mono playback systems — and most club PAs, phone speakers, and Bluetooth speakers sum to mono. Use a stereo imager or mid/side EQ to collapse the low end to center.

Target: Mid/side ratio between 0.15 and 0.55. Below 0.08 sounds narrow and lifeless. Above 0.60 risks mono collapse.

6. Create Energy Contrast

Your arrangement needs contrast between sections. Breakdowns should feel noticeably different from drops. Builds should escalate. A track that runs at the same energy level for 6 minutes feels monotonous regardless of how well it's mixed.

Quick test: Listen to your track at low volume. Can you hear the structure? Can you feel the build before the drop? If it sounds like one continuous block, you need more dynamic variation between sections.

7. Leave Headroom

Your pre-master peaks should not exceed -3 dBFS. Clipping your master bus before it even reaches a mastering chain introduces distortion that can't be removed. If your peaks are hitting 0 dBFS, pull down your master fader or reduce individual channel levels.

8. Compare Against References

Pick 2–3 professionally released tracks in your subgenre and A/B them against your mix. Listen for low-end weight, high-end clarity, stereo width, and overall energy. Your ears adapt after hours in a session — reference tracks reset your perception. Match-EQ plugins can show you exactly where your frequency distribution differs.

9. Check in Mono

Collapse your mix to mono and listen. If elements disappear, you have phase cancellation from stereo effects. Club systems, phone speakers, and many Bluetooth speakers play in mono or near-mono. A mix that falls apart in mono will sound thin in half the places people hear it.

10. Run an Objective Analysis

Your ears lie to you after 3 hours in a session. Objective analysis catches what adapted ears miss. Upload your track to TrackScore.AI™ and get scores across all the dimensions above — frequency balance, loudness, dynamics, stereo width, danceability, and structure — in about a minute. Fix what the analysis flags, re-upload, and confirm your fixes landed.

For more on how analysis fits into the full production pipeline, see What Is Track Analysis? or our 10-stage production workflow guide.

Fix, Re-Analyze, Repeat

Don't try to fix everything at once. Work through the checklist in order — sub-bass first, then full spectrum, then loudness. Each fix can shift other metrics. Cutting excess sub-bass often improves your mid-range clarity and loudness headroom at the same time. After each round of fixes, re-analyze to confirm the changes landed and didn't introduce new problems.

Most producers see significant improvement after 2–3 analyze-fix cycles. Once your scores stabilize and there are no warnings, your mix is ready for mastering. For tool comparisons to help you pick the right analyzer, see our best music analysis tools roundup.

Frequently Asked Questions