EXs255 Omega Greek Bouzouki

Crafted for KORG KRONOS & NAUTILUS | Inspired by Greek Musical Heritage
Whether you're a seasoned performer, a composer, or a passionate explorer of world instruments, the EXs255 Kelfar Omega Greek Bouzouki from Kelfar Technologies brings the iconic sound of the bouzouki to your KORG KRONOS or KORG NAUTILUS with unmatched realism and depth.

Experience the expressive power of the Greek Tetrachord Bouzouki, captured with meticulous attention to detail. This library features dynamic layers (p, mp, and f) and essential articulations including Glissando (Up&Down), Tremolo, Tremolo Triplet, Staccato, Mute, and individual Up and Down strokes for each of the four string courses - all designed to deliver an authentic and inspiring playing experience.


Two Distinct Versions – One Iconic Instrument

Acoustic Tetrachord (Four-course):

Tuned C3-C4 / F3-F3 / A3-A3 / D4-D4, this version delivers the natural resonance and brightness of the traditional bouzouki. Perfect for Greek folk, laïka, and acoustic fusion styles.

Electric Tetrachord (Four-course):

Tuned C3–C4 / F3–F3 / A3–A3 / D4–D4, this version is recorded through high-quality pickups and amp modeling. It offers both clean and overdriven signal paths, making it ideal for live performance setups and contemporary stage arrangements.


Engineered for Authenticity and Performance
Using a custom Decca Tree-inspired microphone setup developed by Sam Skaf, the EXs255 captures the full stereo depth and tonal richness of the bouzouki. Combined with deep sampling and detailed editing, this results in a four-dimensional sound experience that brings the instrument to life—on stage or in the studio.


Optimized for KORG KRONOS & NAUTILUS
Coinciding with the debut of KORG’s flagship KRONOS 3—Return of the King—the EXs255 library brings HD-1 engine optimization and flawless compatibility to both KRONOS and NAUTILUS. Designed for stage, studio, and screen, it delivers powerful expression, crisp detail, and world-class authenticity.


Realistic Bouzouki Articulations and AMS (Alternate Modulation Source, Real-time Controls):
The EXs255 has the following articulations:

Upstrokes & Downstrokes

Glides

Tremolo

Tremolo (Triplet)

Glissando Up

Glissando Down

Glissando Octave Up

Glissando Octave Down

Staccato

Mute

Key Off / Note Release

All the AMS assignments and Real-Time Controls have been standardized. You have dynamic control over the sound using SW1, SW2, After Touch, Velocity, Joystick, and Ribbon. It is highly recommended that you use the EXs255 Guide to become familiar with the Kelfar Omega Greek Bouzouki.


Wave Sequences:
The EXs255 Kelfar Omega Greek Bouzouki is programmed with round-robins to add more realism to your performance. The Bouzouki will no longer sound static or mechanical. Now, it sounds just like a real Bouzouki. Each new note sounds with fresh dynamics.


Poly Legato for Expressive Bouzouki Performance
The EXs255 Kelfar Omega Greek Bouzouki features a carefully programmed poly legato system, designed to enhance the realism and fluidity of your playing. The voicing team at Kelfar Technologies dedicated significant time and precision to fine-tuning each note offset and transition, ensuring that legato passages sound smooth, natural, and true to the expressive style of the bouzouki.

This attention to detail allows for seamless note-to-note transitions, especially when performing melodic lines or ornaments that are characteristic of traditional bouzouki playing. Whether you're gliding between notes or executing fast melodic runs, the poly legato engine responds musically—bringing your performance to life with authenticity and nuance.


Dynamic Bouzouki with Velocity switching
Many of the combis are programmed to respond to velocity switching dynamics. The EXs255 does respond to Dynamics' Note Velocity: ppp, pp, p, mp, mf, f, ff, and fff.


Effects
Do you need to add specific effects to carry off a solo or flourish? Knobs 7/N-5 and 8/N-6 control the effects in real time. This feature makes it easy to get the right amount of Reverb or Delays whether you're performing live or playing in the studio.

The EXs255 Kelfar Omega Greek Bouzouki was recorded by Issa Jarayseh of Eleen Studio, using his expertise and top-tier audio equipment to achieve a sonically rich and authentic sound. EXs255 Kelfar Omega Greek Bouzouki sound library was mastered by Sam Skaf of Sam Skaf Mastering Studios in New York. His proficiency in audio engineering and musical performance, along with state-of-the-art equipment, ensured true-to-life representations of these highly sought-after instruments. The Kelfar Omega Greek Bouzouki was engineered and programmed by Karim El-Far of Kelfar Technologies.

Bring the soul of the bouzouki to your KORG.
EXs255 Kelfar Omega Greek Bouzouki – Tradition meets technology.


Note: The order of the factory Programs is arranged differently among NAUTILUS, KRONOS3, KRONOS2, KRONOSX/KRONOS. This affects sounds which reference the factory Programs. Please download the file which matches your product model.