Art. no. SF1-001 · for iPad and iPhone

A modular synth you build by hand.

Set parts in the bay. Run cables between them. Turn real knobs. What you see is what you hear.

Tell me when it's out

19.99 € · once · no account

Steckfeld SF1 on iPad: a patch of modules in the bay, cables lit between them

01The bay

The whole patch at a glance.

Parts sit on a plate in a grid. Cables run straight from one part to the next in line; a junction splits them, merges them or takes them round a corner. Every cable is lit.

  • Red carries sound
  • Blue carries control: notes, envelopes, LFOs
Modules in the bay, red lights for sound and blue for control between them

02Parts

Nineteen parts. Up to four of each.

Pick one from the parts display, the tweezers bring it, you set it down where it goes.

Sources

  • Analog

    Sine, triangle, saw, square, noise

  • Wavetable

    Basic, pulse, vowel, bright, digital

  • FM

    Four operators

  • String

    A plucked string

  • Audio In

    Mic or interface, through the synth

Effects

  • Filter

    Low, high, band pass, notch

  • EQ

    Band equalizer

  • Comp

    Compressor

  • Dist

    Clip, fold, crush

  • Chorus

    Chorus, flanger, phaser

  • Delay

    Time, feedback, mix

  • Reverb

    Size and mix

Utilities

  • Sequencer

    Sixteen steps

  • Arp

    Up, down, up/down, played, random

  • Envelope

    Attack, decay, sustain, release

  • LFO

    Free, synced or retriggered

  • MIDI In

    Your keyboard or controller

  • Junction

    Splits, merges, turns corners

  • Cover

    A blank plate for a picture

03The programmer

Tap a part. The programmer comes in.

Its screen draws what the part does. Four knobs set it.

Have a MIDI controller? Teach its knobs to turn these.

The programmer on the wavetable: table, position, warp, level
The programmer on the FM voice: algorithm, index, feedback, level
The programmer on the sequencer: its steps around a ring
The programmer on the filter: its curve, mode, cutoff, resonance, drive

04Library

29 patches to start from. Room for yours.

Search them, load one, take it apart, file it under your own name.

The librarian: the patch in the bay, then the library to search and load

  • Bass

    • Fat Ladder
    • Acid Line
    • FM Slap
    • Reese

  • Keys

    • Glass Tine
    • Warm Wurli
    • Drawbar
    • Funk Clav

  • Lead

    • Solo Saw
    • Vowel Lead
    • Fold Scream
    • FM Horn

  • Pad

    • Saw Choir
    • Blade Brass
    • Digi Drift
    • FM Halo

  • Strings

    • Ensemble
    • Orch Swell
    • Spiccato
    • Low Cellos

  • Pluck

    • FM Bell
    • Koto Pick
    • Trance Arp
    • Paper Harp

  • FX

    • Hoover
    • Laser Drop
    • Random Blips
    • Dark Drone

  • Yours

    Slot 01_

05After dark

At night the displays turn red.

Put your iPad in dark mode and the SF1 dims like an instrument on a stage, so it doesn't dazzle.

The same patch in dark mode, the displays glowing red

06Wear

It ages the more you play it.

After 2, 10 and 30 hours the casing shows it: scratches, rust, a dent. The hours count once it's yours.

The casing after many hours of play: scratches, rust and a dent
Steckfeld SF1 on iPad: a patch of modules in the bay, cables lit between them
‹›

New

30+ hours

07Service

Plays with your gear.

MIDI in
USB keyboards, DIN through an interface, Bluetooth, network
Clock
Its own or one from outside. Sends clock, follows start and stop
Audio
Keeps playing in the background, mixes with other apps, latency you set
Pictures
Put your own on the bay, from the Files app
Privacy
No account, no analytics, no tracking
Runs on
iPad and iPhone with iOS 18 or later

One price

19.99 €, once.

Until you buy it, the SF1 is the shop's demo unit, still in its packaging with films on the displays. Press Try me! and listen first.

Tell me when it's out

Steckfeld SF1

Modular synthesizer

Art. no.

SF1-001

2501966000014

19.99 €

One-time purchase