In the negative feedback circuit, since the audio signal causes intermodulation and becomes different from the original sound, CSPort, which emphasizes the reproducibility and realism of the music, is consistent without feedback.
The audio signal that has not been feedback is a smooth sound that is not suppressed and reproduces the original sound as it is.
In order to minimize the TIM distortion generated by applying feedback, it is important to make "no feedback" and "to reduce the number of amplifying elements".
Therefore, we achieve low distortion in the following way.
Minimizing the amplification stage using a proprietary transformer,
Set the optimal plate voltage using the straight part of the tube
By placing a MOS-FET between the tubes and performing optimal impedance matching.