Mix and Master Your Song Online — AI Does the Work

Upload a rough mix or a finished track. Engineer Guy's AI analyzes the audio, balances frequencies, controls dynamics, and hands you back a polished master — all without touching a single plugin.

No credit card · No plugins · Works in your browser

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Mix Coaching

Get specific, actionable feedback on your mix — EQ problems, frequency masking, compression issues — in plain English.

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Auto-Master

One click turns your mix into a streaming-ready master calibrated to Spotify, Apple Music, and YouTube standards.

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Voice Copilot

Talk through your mix hands-free. Ask questions, request changes, get explanations — like having an engineer in the room.

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Batch Upload

Processing a whole EP or album? Upload multiple tracks at once and get them all mastered in parallel.

Mix and Master in One Place

Most producers use different tools for mixing and mastering — a DAW for the mix, a separate plugin chain or service for the master. Engineer Guy combines both into one workflow. Upload your mix, get feedback on what to improve, then master it — all in the same session, all in your browser.

What Happens When You Upload

The moment your file lands, the AI runs a full spectral analysis. It maps the frequency content of your track, measures dynamic range, evaluates stereo width, and compares it against reference standards for your genre. Within seconds you get a detailed breakdown: what's working, what isn't, and specific numbers — "your 250Hz is 6dB louder than reference, causing low-mid mud."

From there, you can ask the AI to apply corrections, generate a master, or dig into any specific problem area using the chat interface.

Online vs. Studio: What You're Actually Getting

A professional mix and master engineer charges $200–$1,000+ per song. What you're paying for is trained ears, reference monitors, and experience. Engineer Guy gives you the technical analysis and corrections that account for most of what a studio engineer does — at a fraction of the cost, in a fraction of the time. For indie releases, it's the practical choice.

Who Uses It

Bedroom producers finishing tracks for streaming. Beatmakers who want their instrumentals to sound competitive. Songwriters recording demos that need to sound polished for pitching. Podcast producers who need consistently leveled audio. If you make audio and want it to sound better, this is for you.

Ready to hear the difference?

Upload your track and get AI feedback in under 60 seconds.

Frequently Asked Questions

Can I mix and master in the same session?

Yes. Upload your track, get mix feedback, make changes in your DAW if needed, then re-upload and master — or let the AI apply corrections directly.

What audio formats are supported?

WAV, MP3, AIFF, and FLAC. For best results, upload a 24-bit WAV with no limiting on the master bus and 1–2dB of headroom.

Is there a file size limit?

Up to 300MB per file. Most 3–5 minute tracks at 24-bit/44.1kHz come in well under that.

What if I only want mix feedback, not mastering?

You can get detailed mix analysis without generating a master. Ask the AI specific questions about your track — 'why does my mix sound muddy?' or 'is my vocal too loud?' — and get specific answers.

Can I re-upload after making changes?

Yes. Upload as many versions as you need within a session. The AI tracks changes between versions so you can see what improved.