Stem & Multitrack verification for audio professionals
Deliver flawless stems every time. No more sync issues or missing audio, no more guesswork. Get early access via TestFlight.
Beta Testers: Get full product for free upon release • Offer ends March 2026
Join 500+ audio engineers testing Stem Checker
Ever bounced or received stems that just aren't right?
These errors slip through every day—and they cost you time, money, and reputation.
Alignment Mismatch
Stems that don't start at bar 1. They weren't exported from the same point.
Dual-Mono Exports
Stereo files where left and right are identical. Wastes space and confuses panning decisions.
"Audio_01.wav"
Ambiguous filenames that force you to solo every track just to figure out what it is.
Silent Stems
A track that should have audio but is blank—because someone left a mute on or routed it wrong.
Check Coherent Metadata
44.1 kHz vs 48 kHz mismatches cause timing drift that only shows up mid-session.
Clipping Detection
Digital overs that went unnoticed during export can ruin an otherwise perfect mix.
“These aren't rare edge cases—they happen in 1 of every 3 stem deliveries. And when they slip through, your reputation takes the hit.”
Try the Interactive Demo
Experience Stem Checker with real audio playback, waveform visualization, and all core features right in your browser.
Built for Professional Workflows
Everything you need to verify audio with confidence.
DAW-Grade Rendering
Multi-resolution LOD system with up to 50x zoom capability.
Streaming Processing
Handles files of any size without eating up your RAM.
Batch Renaming
Smart renaming tools to clean up your stem filenames instantly.
Intelligent Analysis
Automatic detection of identical channels and dual-mono exports.
Dropbox Integration
Import and export stems directly from your cloud storage.
Sync Playback
Sample-accurate playback of multiple stems simultaneously.
Instant Verification in Seconds
01
Drop Your Files
Drag stems directly into Stem Checker from Finder or Dropbox.
Drop Your Files
Drag stems directly into Stem Checker from Finder or Dropbox.
02
Automatic Analysis
Instant waveform rendering and issue detection runs automatically.
Automatic Analysis
Instant waveform rendering and issue detection runs automatically.
03
Verify & Export
Confirm stems are issue free, and export confident deliverables.
Verify & Export
Confirm stems are issue free, and export confident deliverables.
Trusted by Audio Professionals
Join hundreds of engineers who've streamlined their workflow.
“Managing stems used to turn me into 90% detective and only 10% mixer. Now I can actually focus on the creative work instead of hunting down alignment issues and missing files.”
Marcus
Mix Engineer
“It flagged a stem that was slightly shorter than the rest—something I normally wouldn't notice until I'm already mid-session. That alone has saved me from so many awkward client calls.”
Sarah
Post-Production Supervisor
“Being able to check stems without opening a full DAW session is genuinely nice. No more dragging files into Pro Tools just to sanity-check someone else's exports.”
James
Studio Engineer
Frequently Asked Questions
Everything you need to know about Stem Checker.
Stem Checker supports all major audio formats including WAV, AIFF, MP3, FLAC, and AAC. We recommend using lossless formats (WAV/AIFF) for professional stem checking.
No hard limits! Our streaming architecture processes files of any size without loading them entirely into memory. You can check as many stems as you need in a single session.
Our algorithm analyzes the audio data across channels to detect when left and right channels contain identical content. This helps identify mono files that were incorrectly exported as stereo, which wastes file space and can cause issues with panning and stereo processing.
Yes! We have native Dropbox integration, allowing you to import and export stems directly from your Dropbox folders.
All beta testers receive the full version of Stem Checker for free when we launch. This is our thank you for helping us improve the product.
Start Verifying Stems Like a Pro
Join the beta program today.
Beta Perk: All testers get the full product for free upon release • Ends March 2026
Requires TestFlight on macOS 14+