Our mission is to create a harmony between people and music that transcends time and space.
Therefore, the main character is the music and the people who enjoy it.
The moment we drop the needle, our presence ceases to exist and the
ultimate ideal is to compliment the music.

We want to create a world full of emotion with sounds that convey the
grandeur and delicacy , the uplift and silence.

Products Concept

Eliminate all noise and increase silence.
To create a neutral sound without adding or coloring anything.
With these beliefs, we use superior noise processing techniques and
no-feedback methods.
Without adding any audio signals other than those engraved in the sound
groove, it creates a three-dimensional and expressive sound.

CSPort's Three technologies


Adoption of non-feedback system


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.


Optimized switching power supply


Rectifiers and contacts used in general power supplies are sources of noise, and also "power supply quality is sound quality. CSPort has 40 years of knowledge and skills in power supply manufacturing and uses switching regulators optimized for audio applications in all products. An analog regulator is arranged in the latter stage, and the noise level is completely cleared.
By using a switching regulator

  • Realization of stable high-voltage supply at 1,400V (power amplifier 212PA) / 1,050V (power amplifier GM70PA)
  • Weight reduction of 24.5kg (212PA) and 28kg (GM70PA)
  • Worldwide common power supply voltage

And so on.


Outstanding noise control


We have highly reliable noise processing technology based on experience in the production and development of industrial equipment including the medical field, Shields and attenuates mixed noise and unnecessary vibration from inside and outside the system. It does not add any unnecessary signal other than the audio signal engraved on the sound groove. We generously introduce ideas and techniques for creating faithful and quiet sounds.

Company Profile

CSPort is a Japanese audio manufacturer founded in 2014.
Starting with the power amplifier 212PA, phono equalizer amplifier C3EQ, and analog player LFT1 (announced in 2017), it has been widely used not only in Japan but also around the world.

Company name CSPort Co., ltd.
Address 1-1-18 Nishinakanomachi, Toyama-city, Toyama 939-8084 Japan
Phone number +81-76-461-4188
Establishment September 1, 2014

CS ポートロゴ

The origin of the brand name:
Just as the port shields the tide and wind to allow ships to enter and exit, eliminating all noise and creating a warm sound from the in/out of the audio signal.
The symbol "Harmonic wave" and the rounded typeface symbolize the harmony between people and music, people and society through the sounds we create. In addition, an indigo-gray color expresses the neutral and warm sound-making attitude.