Audio apps, builds and opinions, by Chronosaur.

Apps for tuning what you hear, the things I print around listening, and honest notes on IEMs and headphones.

11.11

Black Friday

27.11

Prices refreshed

every 6 h

11.11 and Black Friday 2026

I’ve made a thing again 🙂 It’s a page for 11.11 and Black Friday. It lets you find best prices on IEMs and headphones across the most known vendors.

HiFiGo
Linsoul
Shenzhen Audio
The HiFi Cat
Hangout Audio
Apos Audio

See the deals

Apps

All apps

Android · Google Play · Free

EQ Sweep

Tune your headphones by ear: sweep a tone, mark peaks, export a parametric EQ.

Get it on Google Play

Android · Free

Contour

Parametric EQ for USB DACs, written into the DAC itself from your Android phone, fully offline.

Get it Supported DACs

Latest opinions

All opinions

Short opinion

Moondrop

DUSK (default-DSP)

Neutral

Best sound, flawed package

Sub-bass boosted, technically impressive, yet pleasantly soft. It's really hard to find a more engaging set that doesn't trade neutral sound for some exotic coloration.

Review

Kiwi Ears

Septet

Bright

Conditional Excellence

One of the most surprising IEMs I've owned. The closest thing to an open-back headphone you can fit in your pocket, if you give it a powerful source and your full attention.

Review

YU9

QUE

Bright

Too clean for its own good

One of the most impressive IEMs I've heard, and the cleanest. Coloured, not neutral. Every ingredient is fresh and perfectly separated - and that's exactly why it never quite comes together for me.

Review

Hisenior

Mega5EST

Neutral-warm

The ultimate boring IEM

Hisenior's Mega5EST is a laid-back, warm-leaning set that blends bass, treble and vocals into one of the most natural, cohesive presentations I've heard. And, in the very best way, the most boring.

Eleven open front grilles for the Satyr 3 headphones, lighter and more open than the stock one and mounted the same way. My favourite is the Squircle Oblong, the one I printed for my own pair.

Download on Printables

Non-audio projects

All non-audio projects

In progress

Filament Room

A 3D filament shelf in a painted workshop - open any spool for its print temperatures. Built with three.js and open source; still in progress.

Open Filament Room

In progress

gameblooms

A catalogue of games, each with all its trailers and announcements, release dates per platform, critic and Steam scores, and how long it takes to beat. New trailers are picked up within the hour.

Open gameblooms

Start here

Why it’s worth it, and why you shouldn’t

How I listen, what I chase, and why the chase is the point — read this before the opinions.

Read the essay

Join the community

Questions, feedback or ideas about the apps and projects? Come say hi on Discord.

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Not updated on a schedule — a new opinion when something is worth writing about.