SynthFont2 is a specialized audio tool designed to transform standard MIDI files into high-quality audio recordings by utilizing SoundFonts and VST instruments. Developed by Kenneth Rundt, this software serves as a bridge between raw MIDI data and professional-sounding musical output, allowing users to move far beyond the limitations of the default Windows system synthesizers. By loading custom sound banks (SF2, SFZ, and others) and applying real-time effects, it enables musicians and enthusiasts to render complex arrangements into formats like WAV, MP3, and FLAC with precise control over every instrument.
Key Features
- Advanced SoundFont Engine: Supports a wide array of sample formats including SF2, SFZ, SFArk, and the proprietary SFKR format, allowing users to assign specific sound banks to individual MIDI channels for realistic playback.
- VST & VSTi Integration: Functions as a host for VST effects and instruments, enabling users to replace SoundFont layers with professional virtual synthesizers or apply third-party audio effects like reverb and compression to tracks.
- Deep MIDI Editing Tools: Includes a fully featured Piano Roll and Event List editor, letting users modify notes, velocities, and controller data (such as modulation or pitch bend) directly within the interface without needing external software.
- Non-Destructive Arrangement Files: Saves all mixer settings, instrument assignments, and effect chains into a separate "Arrangement" file, preserving the original MIDI data while storing the user's unique production setup.
- Batch Audio Rendering: Converts entire folders of MIDI files into audio formats (WAV, MP3, M4A/AAC, FLAC) in a single operation, which is essential for archivists or content creators digitizing large libraries of sequences.
- Karaoke & Lyrics Support: Displays and edits embedded lyrics and Karaoke text, making it a practical tool for creating backing tracks or visualizing song structures during playback.
Use Cases
This software is ideal for music hobbyists and retro-gaming enthusiasts who want to listen to or record MIDI collections using high-quality samples rather than the basic Microsoft GS Wavetable Synth. It also serves composers who need a lightweight, dedicated environment to mock up orchestral arrangements or produce backing tracks for live performance without the overhead of a full Digital Audio Workstation (DAW).
SynthFont2 offers a focused, efficient solution for MIDI rendering that combines the simplicity of a player with the deeper editing capabilities of a production suite, making it a standout choice for anyone serious about MIDI fidelity on Windows 7, Windows 8, Windows 10, and Windows 11.
Version 2.9.1.1 — September 2025
- Resolved an issue preventing the application from checking for new version availability
- Introduced a new "Replace MIDI file" function in the File menu to swap out MIDI files used by arrangements
- Corrected display problems in PianoRoll where note length selection buttons appeared truncated on certain displays
- Fixed the free size button functionality that previously failed to open the size configuration window
- Addressed multiple issues in the SoundFont Banks and Override feature, including file addition limitations and disabled button states
- Ensured track changes are properly applied when closing the SoundFont Banks window
- Fixed note pasting functionality in PianoRoll when position ticks were set to zero
- Various other minor bug fixes reported by users
