Due to its internal ROS V.5 sound source, the DPS-90H exhibits the characteristic non-pitch sounds of acoustic pianos including the string resonance, damper resonance, damper samples and key-off samples which enhances realism in its piano sounds.

The powerful sound system of 2-channel 4 speakers improves the pleasure of playing. The ARHA-3I keyboard, the product of Dynatone's expertise in the field, provides the authentic touch of which even professional players are comfortable with.