Electra One

The Electra One is a generic controller rather than a synth.

Note that on Windows, MIDI USB ports are always opened exclusively - if you have the Electra One web page open e.g. in Chrome, it will lock the USB port and KnobKraft will not be able to open it, and fail to detect the Electra One. You will see fleeting error messages in the KnobKraft log, if you look closely, pointing this out.

Currently, the Electra One (Firmware V1.5.x) transports it's presets in a single sysex dump, which can get very big (e.g. 128KByte). Most MIDI interfaces don't allow these data transfers, and it is unknown why Chrome Web MIDI would support an upload via the USB interface of the Electra One but e.g. MIDI-Ox can not. Therefore, you are limited to smaller presets in KnobKraft for the time being.

Update: Since Firmware version 2 the Electra One is fully class compliant (it used an additional serial over usb connection before) and can be hooked up to the iConnectivity Midi Interfaces via USB. With that you gain multi-client compatibility, which means Chrome AND KnobKraft can simultaneously access the Electra. Another way of gaining multi-client capability is to attach the Electra via DIN Midi to a multi client capable Interface such as the RME audio interfaces.