Tube type preamplifier with reliable tube C3g. High ability to eliminate common mode noise due to noise processing technology based on power supply development. Provides a noise reduction effect.
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
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.
Power supply for each left and right
Independent power supplies deliver power to the left and right channels as well as control circuits. Using all of the characteristics of the components together, we are able to preserve silence.
Resistance switching ladder attenuator
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 0 dB to -60 dB.
Specifications
Model
C3PR
Type
Vacuum tube stereo preamplifier
Frequency Response
20 Hz-20k Hz +0-1 dB
Max. Input Voltage
4 V/1k Hz
Max. Output Voltage
4 V/1k Hz
THD
0.05%/1k Hz 250 mV
Signal to Noise Ratio
80 dB/ATT 0 dB, 100 dB/ATT -20 dB
Gain
16 dB
Min. load Impedance
600 Ω
Input Terminal
Balanced x2, Unbalanced x4
Input Impedance
7k Ω or more
Output Terminal
Balanced x2, Unbalanced x2
Output Impedance
50 Ω or less
Balance Adjustment
±3.5 dB
Compensator
+2 dB 3 Steps 100 Hz
Remote Control
Infrared transmitter
Power Supply
AC100/120/200/240 V, 50/60 Hz
Power Consumption
30 W
Dimensions
470W×90H×400D mm
Weight
14 kg
Finishing
Anodised aluminium
Accessories
AC cords, Remote control, microUSB cable for charging
Warranty Period
5 years
Please use a pre-stage equipment with an output impedance of 1.5k Ω or less.
Dimensions do not include legs, knobs, and terminals.
The appearance and specifications are subject to change without notice.
Actual colors may differ from those in the photographs due to shooting, lighting, etc.
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