# Bitsonic > Bitsonic builds VST instruments, sample libraries and audio tools for music producers, composers and sound designers. Primary site: https://vstplug-ins.com/ Canonical home page: https://vstplug-ins.com/ Sitemap: https://vstplug-ins.com/sitemap.xml Robots: https://vstplug-ins.com/robots.txt Support: https://vstplug-ins.com/support.php Contact: https://vstplug-ins.com/contact.php ## Products - Keyzone Classic 4: piano and keyboard collection for the Bitsonic Sample Player. Page: https://vstplug-ins.com/keyzone-classic-4.php - Keyzone Classic Free legacy notice: explains why the old three-sound free edition is not recommended for new projects and directs users to the current Keyzone Classic 4 release and its audio demos. Page: https://vstplug-ins.com/keyzone-classic-free.php - Easy Peasy: fast mastering plug-in with automatic balance, dynamics, width, saturation, bass reinforcement and maximizing. Page: https://vstplug-ins.com/easy-peasy.php - Melody Harmonizer: free melody-to-chords MIDI plug-in with Basic and Complex generation modes and drag-and-drop MIDI workflow. Page: https://vstplug-ins.com/melody-harmonizer.php - AI Bass Ultimate: bonus bass instrument unlock with keyswitch articulations, groove patterns and a 32-step sequencer. Page: https://vstplug-ins.com/ai-bass-ultimate.php - Pop Violin: bonus solo violin instrument for fast pop, trailer and sketch writing. Page: https://vstplug-ins.com/pop-violin.php - Ballistic Pulse: cinematic impact and weapon-style sound effect instrument, unlocked as part of the bonus bundle. Page: https://vstplug-ins.com/ballistic-pulse.php - Profondo: bass reinforcement and low-end shaping plug-in. Page: https://vstplug-ins.com/profondo.php - Custom Reverb: reverb plug-in focused on direct ambience and space shaping. Page: https://vstplug-ins.com/custom-reverb.php Supported formats vary by product but current product pages describe macOS AU, macOS VST3, Windows VST3 64-bit and Linux VST3 support where available. Downloads are account-based. Product download files are available after login or purchase when the user's account has the correct access. ## Manuals And Support - Support hub: https://vstplug-ins.com/support.php - Keyzone Classic 4 installation guide: https://vstplug-ins.com/support/Bitsonic-Keyzone-Classic4-Installation-Guide.pdf - Keyzone Classic 4 manual: https://vstplug-ins.com/support/Bitsonic-Keyzone-Classic4-Manual.pdf - Easy Peasy manual: https://vstplug-ins.com/support/Bitsonic-Easy-Peasy-Manual.pdf - Melody Harmonizer manual: https://vstplug-ins.com/support/Bitsonic-Melody-Harmonizer-Installation-Guide-and-Manual.pdf - AI Bass Ultimate installation guide: https://vstplug-ins.com/support/Bitsonic-AI-Bass-Ultimate-Installation-Guide.pdf - AI Bass Ultimate manual: https://vstplug-ins.com/support/Bitsonic-AI-Bass-Ultimate-Manual.pdf - Pop Violin installation guide: https://vstplug-ins.com/support/Bitsonic-Pop-Violin-Installation-Guide.pdf - Pop Violin manual: https://vstplug-ins.com/support/Bitsonic-Pop-Violin-Manual.pdf - Ballistic Pulse installation guide: https://vstplug-ins.com/support/Bitsonic-Ballistic-Pulse-Installation-Guide.pdf - Ballistic Pulse manual: https://vstplug-ins.com/support/Bitsonic-Ballistic-Pulse-Manual.pdf - Profondo manual: https://vstplug-ins.com/support/Bitsonic-Profondo-Installation-Guide-and-Manual.pdf - Custom Reverb manual: https://vstplug-ins.com/support/Bitsonic-Custom-Reverb-Installation-Guide-and-Manual.pdf ## Articles - Article archive: https://vstplug-ins.com/articles.php - RSS feed: https://vstplug-ins.com/feed.xml - Author: Ferenc Gyuricza. The articles are based on his original studio experience, tests, opinions and analysis. - Best Piano Plugins in 2026: A Practical Comparison: https://vstplug-ins.com/best-piano-plugins-2026.php - Melody Harmonizer Enters the KVR Developer Challenge 2026: https://vstplug-ins.com/melody-harmonizer-kvr-developer-challenge-2026.php - Why Free Plugins Still Matter in 2026: https://vstplug-ins.com/why-free-plugins-still-matter-2026.php - Budget Studio Monitors Under $250: https://vstplug-ins.com/budget-studio-monitors.php - What You Need to Compose Music: https://vstplug-ins.com/what-you-need-to-compose-music.php - Which Audio Interface Should I Buy?: https://vstplug-ins.com/best-audio-interface.php - Generating Unique Sound Samples with AI: https://vstplug-ins.com/ai-generated-sound.php - Compression and Volume Control for Orchestral Music: https://vstplug-ins.com/compression-and-volume-control-for-orchestral-music.php - Compressor and Maximizer Functions: https://vstplug-ins.com/compressor-maximizer-functions.php - Tips for Audio Mixing and Editing in Film Production: https://vstplug-ins.com/dialogue-edit.php - Studio Monitors: Essential Guide for Better Mixing and Mastering: https://vstplug-ins.com/general-studio-monitors.php - How to Mix Bass Sounds: https://vstplug-ins.com/how-to-mix-bass-sounds.php - How to Use an Equalizer Properly: https://vstplug-ins.com/how-to-use-eq-properly.php - Lewitt LCT 440 Compared to the Audio-Technica AT2020: https://vstplug-ins.com/lewitt-lct-440-test.php - What Is Voice Cloning and How Will It Impact the Film Industry?: https://vstplug-ins.com/what-is-voice-cloning.php - Mastering in the Present: https://vstplug-ins.com/mastering-in-the-present.php - Reverb: Tips and Tricks for Perfecting Your Sound: https://vstplug-ins.com/mastering-reverb.php - Why Free Sample-Based Music Software Still Matters: https://vstplug-ins.com/music-production-software-free.php - Samson Servo 120: A Compact Amplifier for Studio Use: https://vstplug-ins.com/samson-servo.php - The End of DSP Technology?: https://vstplug-ins.com/the-end-of-the-dsp.php - The Impact of Artificial Intelligence on Composers: https://vstplug-ins.com/the-impact-of-artificial-intelligence-on-composers.php - Tips for Creating a Proper Vocal Recording: https://vstplug-ins.com/vocal-recording-in-practice.php - What Will Happen to Avid Pro Tools?: https://vstplug-ins.com/what-will-happen-to-avid-pro-tools.php ## Entity Notes Brand: Bitsonic Domain: vstplug-ins.com Main topics: VST plug-ins, software instruments, sample libraries, mastering, reverb, bass instruments, piano instruments, violin instruments, audio production, mixing, studio workflow. Primary language: English.