AVTester.com

Audio Player & Visualizer

Test with your own files or use our calibrated demos.

New sample music for 2026: extra reference tracks are available in Speaker Test and Player.

Files are processed locally. No uploads.

Select Track

🚀 QUICK TEST TRACKS

🆕 NEW SAMPLE MUSIC (2026)

Add the WAV files into /html/demo/ using the same filenames.

YOUR FILES

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Select a track to play

Audio Visualization (FFT)

Why use a local audio player to test speakers?

Streaming services compress audio aggressively. Even on the highest-quality tier, services like Spotify, Apple Music, and YouTube apply lossy compression that can mask subtle issues with speakers and headphones. If you're trying to evaluate gear or verify that a system is working at its best, playing a local file you trust is a much more reliable starting point.

The local player on this page lets you drag and drop any audio file from your computer or phone — MP3, FLAC, WAV, AAC, OGG — and play it back through your speakers without uploading anything. The file is read directly by your browser using the FileReader API and is never sent to AVTester or any third-party server.

What to listen for when evaluating a speaker

  • Tonal balance. A well-balanced system should sound neither boomy nor harsh on familiar tracks. If you have to constantly reach for the volume or EQ, something in the chain is unbalanced.
  • Stereo imaging. Close your eyes and try to point at where each instrument seems to be coming from. On a well-set-up stereo system, voices should sit dead centre between the two speakers, with other instruments spread out to either side of that.
  • Bass cleanliness. Sub-bass should sound tight and defined, not boomy or one-note. If every bass note sounds like the same low rumble regardless of pitch, you're probably hearing a room mode rather than the music.
  • Vocal intelligibility. Even at low volume, lyrics should be easy to follow. If you find yourself turning music up just to hear the words, the midrange is probably scooped or masked.

Choosing reference tracks

It's worth keeping a small set of reference tracks — songs you know intimately on multiple systems — for evaluating new gear. Pick tracks that include solo vocals, dense ensembles, deep bass, and very quiet sections. The point is not that any one track is "objectively best" but that you've heard them so many times you immediately notice when something is different.