The Kawai K3 includes 33 waveforms, with one editable additive waveform, and offers 7 effects types, including 6 chorus and 1 delay.

Membrane switches allow for performative use, making on-the-fly sound editing accessible with the jog wheel.

The K3's oscillators can sound stiff on their own, often benefiting from chorus to add warmth.

Noted for its substantial metal frame, the K3 is described as heavy, requiring careful handling, and has membrane panel buttons with a jog wheel for quick editing.

After decades, keys may require repair, but the K3 remains structurally solid, akin to a tank.

Owners appreciate the K3's unique sonic character, highlighting its ability to produce PPG-style timbres and gritty digital artifacts with a self-oscillating SSM filter.

Despite key issues, it continues to serve as a sound source via MIDI, though it's not multi-timbral.

Some users prefer the K3's straightforward architecture and sound over more complex models like the ESQ-1, citing its ability to fit effortlessly into mixes.

Some owners suggest the K3 takes up a lot of space in a mix compared to the ESQ-1, which excels at 80s pads.

Third-party controllers are available to add knobs for enhanced real-time control, improving the K3's usability despite its push button interface.

Programming the custom waveform involves assigning harmonic amplitudes, which is tedious but manageable, according to experienced users.

Opening the synth to address key malfunctions is necessary for continued playability; users note the need for regular maintenance.

There are discussions about rising prices on platforms like Reverb, reflecting increased interest and valuation.

The K3 appeals to those seeking SSM filters affordably, often as an alternative to pricier options for a PPG-style sound.