When shoppers compare small grand pianos, two names often rise to the top: the Kawai GL 20 and the Yamaha GC1. Both are compact Japanese grand pianos from respected manufacturers. Both fit beautifully in homes, teaching studios, churches, and smaller performance spaces. Both offer the elegance, repetition, and musical response of a real grand piano without requiring the footprint of a larger 6 foot instrument.

But while the Yamaha GC1 is a very good piano, the Kawai GL 20 makes a stronger case as the more advanced, more expressive, and more complete musical instrument.

Kawai lists the GL 20 at 157 cm, or about 5 feet 2 inches, with the Millennium III action, longer keys, a solid spruce tapered soundboard, duplex scaling, and 661 lb weight. Yamaha lists the GC1 at 5 feet 3 inches, with duplex scaling, a soft close fallboard, and a 627 lb weight.  

The Case for the Yamaha GC1

The Yamaha GC1 deserves respect. Yamaha has earned a strong reputation for consistent manufacturing, clear tone, and dependable performance. For many players, the GC1 delivers exactly what they expect from Yamaha: a clean, bright sound, a familiar touch, and a compact size that works well in a living room or studio.

The GC1 is also slightly longer than the Kawai GL 20, measuring 5 feet 3 inches compared with the GL 20’s 5 feet 2 inches. In small grands, every inch can help with bass string length and tonal presence, so Yamaha’s extra inch is worth noting. Yamaha also includes duplex scaling and a soft close fallboard, both features that add musical and practical value.  

For someone who specifically loves the Yamaha sound, especially a brighter and more immediate tone, the GC1 can be a very satisfying piano.

The Case for the Kawai GL 20

The Kawai GL 20 is where this comparison gets more interesting. On paper, it is only one inch shorter than the Yamaha GC1. In practice, it feels like a more serious musical instrument than its size suggests.

The GL 20 sits in a very important sweet spot within the Kawai GL Series. It is still compact enough for most homes, but it is large enough to give the player a fuller bass response, more tonal color, and a more satisfying playing experience than many entry level baby grands. It costs less than the larger GL models, yet it still includes the essential design features that make the GL Series so compelling.

Kawai describes the GL 20 as a 5 foot 2 inch grand with the Millennium III action, longer keys, solid spruce tapered soundboard, duplex scaling, and SOLID construction, which is Kawai’s stretcher overlap integrated design.  

Action: Why Kawai Has the Advantage

The biggest difference between these two pianos is the action.

The Yamaha GC1 has a good action. It is dependable, familiar, and responsive. But the Kawai GL 20 has the Millennium III Grand Action, which is one of the strongest reasons to choose Kawai in this category.

Kawai’s Millennium III action uses ABS Carbon components, which are designed for strength, stability, speed, and consistency. Wood is a wonderful material for many parts of a piano, but in an action mechanism, consistency matters. Changes in humidity can affect traditional wooden action parts over time. Kawai’s use of advanced composite materials helps create an action that is stable, responsive, and built for long term performance.

For a pianist, that means more control. Softer playing feels easier to shape. Fast passages feel more secure. Repeated notes respond more cleanly. Dynamic changes feel more predictable.

This is not just a technical difference. It is something a player can feel.

Longer Keys: More Control at the Keyboard

The Kawai GL 20 also benefits from longer keys. This is a major advantage in a compact grand piano.

Longer keys improve leverage. That matters because the player does not always play at the very front edge of the keys. In real music, your hands move in and out of the keyboard. You play between black keys, you voice chords, you shape inner lines, and you need control across the entire playing surface.

Longer keys make the action feel more even from front to back. They help the player maintain control when playing closer to the fallboard. This is one reason the GL 20 can feel more like a larger grand than its size would suggest.

For students, teachers, and serious players, this is a real advantage. It makes the piano more forgiving, more expressive, and more satisfying to play over time.

Tone: Warmth, Color, and a Tapered Soundboard

The Yamaha GC1 has a clear, recognizable Yamaha tone. It is bright, clean, and direct. Many players like that sound, especially for pop, contemporary music, worship music, and settings where clarity is important.

The Kawai GL 20, however, offers a warmer and more colorful tonal palette. Its solid spruce tapered soundboard is a major part of that. Kawai explains that the GL Series soundboards are made from straight grained, quarter sawn solid spruce and are strategically tapered to allow proper resonant movement in different regions of the board.  

That tapered board design helps the GL 20 produce a tone that is not just loud or clear, but musical. It gives the piano a singing quality, with warmth in the midrange and more color in the treble. The bass is also impressive for a piano of this size, especially because the GL 20 is large enough to move beyond the limitations of the very smallest baby grands.

This is why the GL 20 often feels like the practical sweet spot in the GL lineup. It is not as expensive as the larger GL models, but it gives you enough size, enough bass, and enough tonal depth to feel like a serious grand piano.

Build Philosophy: Kawai’s Piano Focus Matters

Another important difference is company philosophy.

Yamaha is an enormous and impressive corporation. It makes pianos, digital instruments, guitars, drums, audio equipment, professional sound gear, and many other products. That scale has advantages, and Yamaha’s consistency is one of the reasons people trust the brand.

Kawai, however, is far more piano focused. Kawai’s identity is centered around acoustic pianos, digital pianos, hybrid pianos, and piano action technology. That focus shows in the GL Series. Kawai is constantly refining action design, materials, soundboard construction, rim design, and manufacturing methods around one central goal: building better pianos.

The GL Series benefits from that philosophy. Features and ideas from Kawai’s higher end instruments eventually influence the more affordable lines. That means the GL 20 is not simply a budget grand. It is a compact grand that carries meaningful Kawai technology in its design.

The Trickle Down Advantage

One of the strongest reasons to choose the Kawai GL 20 is that Kawai’s technology tends to trickle down from its top end pianos into its more accessible models.

Kawai’s highest level instruments, including the Shigeru Kawai line and the GX Series, represent the company’s most advanced piano building ideas. Over time, many of Kawai’s design priorities, including action stability, longer key design, soundboard efficiency, structural rigidity, and tonal control, influence the GL Series.

That is what makes the GL 20 such a strong value. It gives the buyer access to real Kawai grand piano engineering without requiring the price of a larger GX or Shigeru Kawai instrument.

Awards and Recognition

The Kawai GL Series has also received major industry recognition. In 2016, MMR Magazine named the Kawai GL Series Grand Pianos its Product of the Year, and Kawai’s acoustic pianos later received MMR Acoustic Piano Line of the Year recognition in 2022 and 2023.  

That matters because these are dealer voted awards. Piano dealers see what sells, what holds up, what customers respond to, and what instruments deliver value year after year. The GL Series earning that kind of recognition reinforces what many players already feel when they sit down at the GL 20: this is one of the strongest small grand piano values on the market.

Why the GL 20 Is the Sweet Spot

The GL 10 is a great entry into the Kawai grand piano world, but the GL 20 gives you more piano without becoming too large or too expensive. That is why it may be the sweet spot of the GL lineup.

It is still compact. It still works in most homes. It is still more affordable than the larger GL models. But at 5 feet 2 inches, it has enough scale length and soundboard area to produce a more satisfying tone than many smaller baby grands. Add the Millennium III action, longer keys, tapered soundboard, and Kawai’s build quality, and the GL 20 becomes a very compelling choice.

For families, advancing students, teachers, churches, and serious adult players, the GL 20 offers an unusually strong combination of size, price, tone, and touch.

Final Verdict: Yamaha GC1 Is Good, Kawai GL 20 Is Better

The Yamaha GC1 is a good piano. It is compact, attractive, consistent, and backed by one of the most recognized names in music. Players who prefer a brighter Yamaha tone may enjoy it very much.

But when comparing the two as musical instruments, the Kawai GL 20 comes out ahead.

The GL 20 offers a more advanced action, longer keys, a solid spruce tapered soundboard, impressive tonal warmth, strong bass for its size, and the benefit of Kawai’s piano focused engineering. It feels less like a compromise and more like a serious grand piano designed for real musical growth.

The Yamaha GC1 is a fine small grand.

The Kawai GL 20 is the smarter small grand.

For buyers looking for the best balance of performance, size, price, and long term musical satisfaction, the Kawai GL 20 is the prime choice in this small grand showdown.