We’ve come across eurorack synth modules that can interface with an iPhone or iOS device, but the MIDI-SEQ-8 from Personal Circuits might be the first we’ve encountered to date that plays nice with Android devices.
It’s quite simple really. The MIDI-SEQ-8 is a step sequencer (no prizes there) that sends MIDI files over USB from an Android device to an analog synthesizer.
Here’s some spec & features:
This Eurorack module “uses a PIC 24 bit microprocessor to convert the midi messages from the Android app into digital codes which are then converted into gate/trigger and control voltages for 8 channels with TI DACs. These are buffered with precision TI op amps providing precise tracking over three octaves and to within 0.01V over 5 octaves.”
The MIDI-SEQ-8 retails for $149 USD and you can download the MIDI sequencer Android app too.
Download Abroid App: https://play.google.com/store/apps/details?id=com.pmfoundations.android.midiseq8