Guitar Tone Designer — Shape Your Own Guitar Sound Free

The Tone Lab is a free amp panel for the tool's own guitar voice: gain, pickup brightness, sustain, bass, presence, treble, reverb, echo and tremolo, with presets running from Clean Chime to Screamin' Lead. Dial in a sound and it follows you everywhere — the chords you audition, the scales you play, the Gym workouts, the songs.

It is also a quiet ear-training device: hearing the same chord clean versus driven teaches you what gain actually does to harmony (distortion is why power chords exist — the intervals that survive heavy clipping are the root and fifth). Tweak, listen, and the mixing-desk vocabulary stops being mysterious.