SM-1 support
Dubspot SM-1 is a semi-modular synthesizer for iPhone and iPad, with a standalone app and an included AUv3 instrument. It requires iOS or iPadOS 16 or later. No account or external hardware is needed.
Product FAQ, module list and patching screenshots · Full SM-1 manual
Play chords
Load Init MK2. In Output, set VOICE MODE to 2 or 4. Notes share the filter and amplifier envelopes: this is paraphonic playing. For four audible notes, use MK2 Oscillators, Mixer and Output. MULTI TRIG restarts the shared envelopes when you add a note; leave it off for legato playing.
Play a sound
Open the app and play the keyboard below the panels. Tap the preset name to choose a factory sound; the arrows move between presets. Tap the keyboard icon if the keys are hidden. Drag a knob vertically to change it, or double-tap to restore its default value.
Build and patch your instrument
Tap a module header to choose MK1 or MK2 and its panel colour. The + controls add modulation or envelope units and optional Delay or Grains effects. Spring Reverb is always available. Drag the highlighted rectangle in the rack overview to reach modules outside the visible area.
Drag between compatible jacks to connect them, or tap the two jacks in turn. Tap a cord to change its level, polarity or colour. Pull an end into empty space to disconnect it. Rear opens extra audio, clock and performance connections. The question-mark button explains the controls and the long-press gestures used by Grains.
MIDI and Bluetooth
Connect a MIDI controller by USB or a compatible hub. Open Instrument settings using the gear button, then MIDI inputs. Newly connected inputs are enabled automatically. Choose All channels or match your controller's MIDI channel. Bluetooth MIDI opens the system pairing interface. Bluetooth pairing is optional.
Use the AUv3 instrument
Install SM-1 and add Dubspot SM-1 as an Audio Unit instrument in a compatible host. The host supplies MIDI, audio settings and project state. The standalone MIDI settings do not change the host's MIDI routing. Desktop AU, VST3 and AAX plug-ins are separate products.
If there is no sound
Check the device volume, audio output route, Output module volume and mixer levels. Try a factory preset. For external MIDI, confirm that the input is enabled and the channel matches. In an AUv3 host, check that the instrument track receives notes and is not muted. A patched input can replace an internal connection; undo the last cable edit or reload the preset.
Contact
Email admin@dubspot.com with the app version, device model, iOS version and steps to reproduce the issue. For AUv3, include the host name and version.