The DPA10 precisely divides low, mid, and high frequency signals using a DSP, separating them for the left and right channels, and outputs them as a total of 12 analog signals. These signals are sent to a two-stage, fully independent analog circuit. Each frequency band passes through dedicated analog amplification and buffer circuits, and each driver group is driven by completely separate power amplifiers. This ensures a high dynamic range and achieves low-distortion reproduction. The OP amp + BUF634 buffer configuration reduces the load on each driver, allowing for a more accurate depiction not only of volume changes but also of subtle nuances in dynamics, attack, and the decay of reverberation. Optimally handling independent, dedicated amplifiers for different driver load conditions within the earphones suppresses crosstalk between frequency bands and creates a state where each driver is less likely to exert unwanted influence on others. Rather than a resolution that flashy dissects sound, by separating amplifiers for each frequency band, we suppress the large movements in the low frequencies from clouding the subtle presence of the mid-high frequencies, and we establish a foundation where delicate high-frequency harmonics are less likely to be buried by other frequency bands. It is carefully assembled to naturally distribute roles among the frequency bands, enhancing the overall integrity and expressiveness of the music. Additionally, to achieve characteristics at minute volumes and natural volume changes, a high-quality ALPS analog volume control potentiometer is adopted.