Introducing the GL20 ATX4 ‘AnyTime’ hybrid grand piano—a perfect blend of classic elegance and cutting-edge digital technology.
Drawing on nearly a century of expert piano craftsmanship, the GL20 ATX4 baby grand offers the responsive touch and rich tone that pianists love.
With advanced digital features, you can play with headphones for private practice. Experience the harmony of tradition and innovation with the GL20 ATX4 grand piano.
Providing a greater bass resonance and a more impressive visual profile.
The GL-20 ATX 4 offers the same careful attention to detail and quality found in our larger pianos—with a classic “baby grand” profile that will adapt to almost any room.
The Millennium III action
The Millennium III Action is made from ABS-Carbon, a strong and lightweight composite combining carbon fiber with ABS Styran.
This durable material allows for lighter action parts without losing strength, resulting in a faster, more powerful, and more stable performance than traditional all-wood actions.
Longer keys
Longer keys make playing easier and ensure a consistent feel across the entire surface.
Their taller profile and concert-length buttons add rigidity, allowing for better energy transfer and power.

Tapered Soundboard Made of Solid Spruce
The soundboard is the heart of a piano. Its purpose is to transform the vibrations of the piano’s strings into a rich, resounding tone. Kawai uses only straight-grained, quarter-sawn solid spruce for GL series soundboards. Each one is strategically tapered to provide the proper degree of resonant movement in each region. Only soundboards that meet or exceed our demanding resonance standards are selected for use in the GL series grand pianos.

SOLID (Stretcher Over-Lap Integrated Design)
SOLID construction creates an exceptionally rigid foundation to support string tension. First, the pinblock is fitted to the plate. Then, the pinblock and overlapping stretcher bar are integrated into a single structure and solidly anchored to the rim. The extraordinary thickness of the stretcher bar exemplifies the structural integrity of this sturdy framework designed to ensure stable tuning and powerful tone.

V-Pro Plate
The plate is the acoustically neutral iron superstructure of the piano over which the strings are tensioned. All GL Series plates are molded using the Vacuum Mold Process (V-Pro) with “Crossbone Design.” The result is a plate that is strong, stable, and beautiful.
Specifications
| Size | Length | 5”2″ (157 cm) |
| Width | 59″ (150 cm) | |
| Height | 40″ (102 cm) | |
| Weight | 661 lbs. (300 kg) | |
| Touch | White Key Surfaces | Acrylic |
| Black Key Surfaces | Phenol | |
| Action | Millennium III Action with Carbon Fiber | |
| Hammers | All Underfelted | |
| Sound | Soundboard | Solid Spruce, Tapered |
| Agraffes | 1-46 keys | |
| Duplex Scaling | Fore & Back | |
| Back Posts | 3 | |
| Exterior Design | Pedals | Damper, Sostenuto, Soft |
| Casters | Single, Brass | |
| Lid Props | 2 | |
| Fallboard | “Soft Fall” Closing System | |
| Music Rack | Position | 5 Positions |
| Hard Finish | – | |
| Lock | – | |
| Other Features | Stretcher Over-Lap Integrated Design (SOLID) Longer Keys Steel-Reinforced Keyslip & Keybed V-Pro Plate |



