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FM 304

by Paul Betowski more by this developer →

#358,405 of 719,896 by ratings on Apple · #11,366 of 20,928 in Music

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Category: Music

Description

FM 304 — 3x FM Synth Groovebox

FM 304 is a powerful trio of 4-operator FM synthesizers, each with its own sequencer and effects. Built for fast, hands-on sound design, every parameter is available with a one-knob-per-function layout — no menus, no digging.

Create evolving patterns, punchy sequences, and complex FM textures in seconds. Everything is on screen, ready to tweak, making it easy to move from idea to finished loop without breaking flow.

Features

• 3 independent 4-operator FM synthesizers
• Immediate one-knob-per-function control
• 3x 16-step sequencers (one per synth)
• Built-in effects: delay, reverb, chorus
• 3x LFOs for modulation
• 8 FM algorithms
• Note frequency quantisation
• 100 save slots

Designed for speed

No menu diving. No setup.
Just pure FM synthesis with everything visible and playable.

Alternatives to FM 304

Name	Ratings	Rating
Spotify: Music and Podcasts by Spotify	42,096,112	4.8	compare
Pandora: Music & Podcasts by Pandora Media, LLC	11,306,771	4.8	compare
Shazam: Find Music & Concerts by Apple Inc.	8,820,196	4.9	compare
Amazon Music: Songs & Podcasts by AMZN Mobile LLC	3,345,656	4.7	compare
Apple Music by Apple Inc.	3,110,297	4.9	compare
SiriusXM: Music, Sports & News by Sirius XM Radio, LLC	3,077,829	4.8	compare
Audiomack - Play Music Offline by Audiomack, Inc.	2,008,515	4.8	compare
SoundCloud: The Music You Love by SoundCloud Global Limited & Co KG	2,003,458	4.8	compare
YouTube Music by Google LLC	1,515,255	4.8	compare
TuneIn Radio: Music & Sports by TuneIn	1,118,269	4.7	compare

Growth

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History

Tracking since 09/05/2026. History accumulates as changes are observed — check back soon.