The Yamaha C5X 6’7″ chamber grand piano takes the qualities of the more popular C3X and adds more depth and warmth to its lower registers. Whilst representing a subtle refinement, the C5X does bring a darker tone characteristic that makes it that bit more interesting and capable. Yamaha’s C5X is more similar to the C3X than the C6X – so don’t be under the illusion than its half way there. If you need what a C6X does, then you need to step up to it. If you like all that is good about the C3X but can accommodate a larger version; the C5X will reward you with a fuller and warmer tone, most noticeable in the bass.