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Previously known as Keppy's Synthesizer, OmniMIDI is a lightweight yet highly configurable MIDI driver for Windows designed after the popular BASSMIDI Driver.

In fact, the main focus behind this utility was to make it meet the demands of any professional sound engineer. This said, if set up correctly, this synthesizer can achieve very low latencies to a degree of 1 millisecond.

Its main features are:

It’s FREE, unlike most other converters.
Clean and easy-to-use UI. No gimmicks that might distract the user from their objective. Just like OmniMIDI!
Ships with LoudMax, which prevents the audio from clipping.
Support for VST instruments.

OmniMIDI allows you to import and edit lists, as well as import specific presets from SF2 files. It also provides you with a quick way to switch between eight saved lists. Furthermore, by taking a look at the File menu, you can open a built-in, self-explanatory mixer and a blacklist manager. It is worth mentioning that the app also enables you to assign a soundfont list to specific sound utilities, as well as to set the synthesizer as the default MIDI output device.