Why some songs are much louder

A sudden jump between tracks is often not a broken player. Many albums were released at different loudness.

Streaming apps usually hide that. ECHO stays closer to the file, so the difference shows up.

This page is about listening safely, then deciding whether to even tracks out. EQ is separate; see the EQ guide.

Volume and loudness are not the same

Term	Plain meaning
Volume knob	What you turn in ECHO, Windows, or on the headphones
Loudness	How loud the recording feels at the same knob position
Clipping	The signal was pushed too far and sounds broken or harsh

Turning every knob to 100% does not “complete” a quiet recording. It only makes whatever is already in the file more dangerous.

Why tracks disagree

Common causes:

1. Era. Older albums are often quieter. Recent pop is often denser and louder.
2. Genre. Classical and jazz use more dynamics. Electronic and pop are often limited hard.
3. Some files include loudness info. Others do not.
4. ECHO volume, Windows volume, a hardware knob, and Windows “loudness equalization” can all be on at once.
5. An equalizer that boosts a band will make some songs jump.

If you just left NetEase or Spotify, the “uneven” feeling is often the missing platform normalizer. Background is in Switching from streaming apps.

Safety check first

When a track hits hard:

1. Turn ECHO’s player volume down first.
2. Leave Windows volume below the top.
3. Leave headroom on the headphone or speaker knob.
4. Disable Windows spatial sound, bass boost, and loudness equalization once.
5. If you just enabled EQ, turn it off and play the same track.

Caution

Three volume stages at maximum is the fastest way to hurt your ears and to misread “the app is clipping.”

If the same track is fine on system output and only fails in exclusive or ASIO mode, start with Audio output. Do not blame the file first.

What ReplayGain does

ReplayGain means: read how loud this track is, then add or subtract a little at play time so tracks feel closer.

It changes playback gain. It does not permanently rewrite the audio to be louder.

Your goal	Suggestion
Fewer jump scares	ReplayGain on is reasonable
Stay as close as possible to the file	Leave it off and ride the knob
Debugging silence, half-speed, or crackle	Turn it off so you have one less variable
EQ already feels like it is slamming	Turn ReplayGain and EQ off, then enable one at a time

The control usually lives under Settings -> Playback. Use the label in your current build.

Change only this one setting, then try three tracks: a quiet older song, a loud pop track, and a soft vocal.

When more volume is the wrong fix

Symptom	More likely cause	Do this first
One or two tracks are huge	Those masters are loud	Turn down, or enable ReplayGain
EQ makes sibilance or breakup	Too much gain, already clipping	Lower the EQ shelf. See EQ guide
Bluetooth is much louder than wired	Different device and codec	Remember two volume positions
Everything is quiet with knobs high	Output or Windows mixer	Audio output
Only one format sounds wrong	File or DSD path	Try a normal MP3 / FLAC. See Audio formats

Night listening

At night, start quiet and turn up. Starting loud is how the first second becomes a flinch.

A boring daily setup

1. Leave Windows volume in a comfortable place, not 100%.
2. Use ECHO’s player volume for small moves.
3. Turn ReplayGain on only if albums still jump too much.
4. Turn EQ on last, if you still want a taste change.
5. When something breaks, disable ReplayGain and EQ, and return to system output.

Separate “play an album safely” from “make every track equally loud and nicer.” The first one comes first.