CSPort Stereo Preamplifier C3PR

It is equipped with the ultra-reliable C3g, developed by Deutsche Telekom for telephone repeaters. The thin grid lines and large distance between electrodes enable high linearity amplification. The C3g is soldered directly onto the board to reduce noise at the contact point.

Proprietary transformers are used for the input and output. The transformer is an important part that influences the performance of distortion, S/N ratio and input/output impedance. Therefore, the core material, wire material, winding thickness, and winding ratio are meticulously designed and manufactured.

Independent power supply to left and right channels and control circuits. It does not gain S/N in an amplifier circuit. The C3PR gains S/N as a collection of inherent characteristics. So it’s an audibly quiet preamplifier.

In a variable resistor that slides on a resistor, noise is generated by a point-contact diode, which can be a source of distortion. This unit is a crossbar twin structure. A gold and platinum contact relay switches the resistance and attenuates from 0dB to -60dB.

There are two front panels to choose from: one with a graceful design that complements from the music, and the other with a wave pattern that expresses harmony with the music.