Kawai Rx2 Vs Gx2 [patched] May 2026

Kawai GX-2 is the modern successor to the highly successful Kawai RX-2

. While the RX-2 remains a beloved staple in the used market, the GX-2 introduced several structural and mechanical upgrades that align it more closely with Kawai's flagship Shigeru line. Core Specification Comparison An authentic tone from the Kawai RX-2 Grand Piano

The transition from the Kawai RX-2 to the GX-2 represents a significant shift in Kawai’s grand piano design philosophy. While the RX-2 was the workhorse of the "Artist Series" for years, the GX-2 (part of the "Grand Series") aimed to correct specific structural issues and elevate the instrument to a higher tier of performance. kawai rx2 vs gx2

This guide analyzes the differences to help buyers, technicians, and enthusiasts understand the evolution.

7. Direct Sound Comparison (Imagined Listening Test)

| Musical Passage | RX-2 Performance | GX-2 Performance | | :--- | :--- | :--- | | Chopin Nocturne (piano) | Sweet, intimate, slightly closed | Open, breathy, with more harmonic shimmer | | Beethoven Hammerklavier (forte) | Punchy, clear, but runs out of headroom | Powerful, authoritative, surprising bass depth | | Bill Evans jazz voicings | Warm, woody, vintage | Clean, modern, with a glassy top end | | Rachmaninoff C# Prelude (climax) | Breaks up slightly with heavy pedal | Stays clear and resonant | Kawai GX-2 is the modern successor to the

The GX-2’s Voice

The GX-2 inherits its scale design from the Kawai EX concert grand. The most notable change is the inner rim: Kawai uses a combination of maple (outer rim, hard) and alder (inner rim, softer). This softer inner rim absorbs less high-frequency energy, allowing the soundboard to vibrate more freely. The result is a darker, richer fundamental tone with a longer sustain and a "halo" of colored harmonics.

• RX-2 clarity: 8/10. GX-2 complexity: 9/10.
• The GX-2’s bass is thunderous for a 5'11" piano, rivaling some 6'3" instruments.

Try this: Play a low C octave on both. On the RX-2, you hear a clean pitch. On the GX-2, you hear the pitch plus a growl of harmonic richness. RX-2 clarity: 8/10

3. Duplex Scaling: A Hidden Difference

Duplex scaling refers to the unused sections of string beyond the speaking length. Both pianos have front and rear duplexes. But the GX-2 uses adjustable duplex bars with individually slotted metal guides, similar to the EX concert grand.

• RX-2: Fixed duplex bars. The sympathetic ring is pleasant but untunable.
• GX-2: Adjustable duplex bars. Your technician can fine-tune the aliquot string length to enhance or mute the sympathetic resonance. This allows you to customize the "halo" of overtones in the upper midrange.

For a classical pianist, the adjustable duplex is a godsend. For a jazz player, you might disable it for a purer fundamental. The RX-2 gives you no choice.

1. The Action: Plastic vs. "Evolution"

The RX-2 introduced pianists to the Millennium III action, which uses carbon fiber instead of wood for the jacks and whippens. It was a revelation—faster repetition, less friction, and virtually no warping due to humidity.

The GX-2 refines this. It features the Millennium III "Evolution" action. While structurally similar, the evolution includes redesigned geometry and a new "soft fall" board material. In practice: The GX-2 feels lighter and more nimble. The RX-2 feels solid and deliberate; the GX-2 feels liquid. If you play rapid-fire Classical or intricate Jazz, the GX-2 lifts the floor off your technique.