The latest firmware update, “ClariiOS Ver.4.0.13,” is now available for Robkoo’s professional wind synthesizer, the “Clarii PRO C20”!
This update introduces a new pitch-bend control feature called “3D Glide.” By gradually pressing or releasing the six round note keys, players can create smooth glissando effects similar to those found on open-hole instruments such as the shakuhachi and tin whistle.

■ Key Updates
・Added the new “3D Glide” pitch-bend control feature
・Improved bite-control response for smoother and more natural vibrato expression
・Added vibrato-rate adjustment for Auto Vibrato and Bite/Lift Vibrato
・Reduced unintended notes when moving across octaves
・Reduced unintended triggering when playing string and percussion sounds
・Improved sustain-pedal behavior for piano and guitar sounds
・Optimized MIDI message timing and data transfer rates
・Expanded the range of parameters that can be saved to User Banks
・Added Wi-Fi update support using a smartphone hotspot

■ C20 Key Glide Upgrade Kit Campaign
By installing the dedicated “C20 Key Glide Upgrade Kit” on the six round note keys of the C20, users can enjoy the 3D Glide feature with optimized sensitivity.
Until December 31, 2026, Clarii PRO C20 owners can apply for the kit with only a JPY 220 shipping charge (tax included). Applications are available through the Kohske Music online store.

※ This campaign is available exclusively through the Kohske Music online store.
For update instructions, detailed changes, and information on how to apply for the upgrade kit, please visit the manufacturer’s update page.
Update your Clarii PRO C20 to the latest firmware and experience its enhanced expressive capabilities!

■ Update Instructions / Details
https://kohske.com/pages/73/
■Robkoo / Clarii PRO C20