SANSUI C-2105 VINTAGE

Commentary

Stereo control amplifier paired with B-2105.

The power supply board and line amplifier board are made of Teflon, which has extremely low dielectric constant and dissipation factor, maintains electrical flat frequency characteristics up to the GHz range, and has high mechanical vibration absorption.
As a result, various types of interference from the surroundings are suppressed in order to prevent harmful vibration to the elements, loss of passing signal is prevented, and flux jumping and vibration are eliminated.

The line amplifier is equipped with a MOS FET that can set the input impedance high and has excellent high-frequency characteristics.
The second stage is a vertical differential system and has a simple circuit configuration with a Darlington output.
The inverting amplifier has an inverted Darlington output and is mounted on a single channel.
The circuit that requires a power supply is minimized and the balance output is and the balance output is also incorporated into the Teflon substrate to eliminate factors of sound quality degradation.

The power supply section uses a newly designed transformer with low magnetic induction and excellent regulation. The electrolytic capacitor and Teflon power supply board are separated into individual units and mounted floating on the power supply chassis.

Equipped with a phono equalizer that supports three positions : MC, HIGH, MC, and MM.
The input is a FET differential para-connected to achieve low impedance. The second stage is a vertical differential and is output by inverted Darlington.

The left and right channels operate under the same conditions, and independent structures have been introduced to eliminate the effects of electrical and magnetic interference and vibration between units.
In addition, the bottom plate made of pure copper, aluminum line amp base chassis, aluminum side panels, and copper-plated structures are made of non-magnetic materials, non-resonance, and noise prevention. In addition, a teflon sheet is used for the top plate to prevent internal reflection and vibration.

The insulator is made of pure copper material with excellent damping properties and is gold-plated. Genuine leather is used for the installation part to reduce unnecessary internal and external vibrations.

The connector is equipped with WBT's OFC alloy 24-carat hardened gold plated RCA terminal.
In addition, gold plated balanced input-output terminals made by Neutrik are mounted.

6N Teflon shield wire is used for the internal wiring material and each part is carefully selected.

Model Rating

Type	Stereo control amplifier
Input Sensitivity / Input Impedance (1 kHz)	Phono MC : 300 μ V/33 Ω Phono High MC : 2.5mV/100 Ω Phono MM : 2.5mV/47k Ω CD, Tuner, Line, Tape Play1, 2 : 150mV/47k Ω Balanced Input : 150mV/600 ohm
Maximum Allowable Input (1 kHz, THD : 0.01%)	Phono High MC:40mV Phono MM:350mV
Output Voltage / Output Impedance (1 kHz)	Tape Rec1, 2 : 150mV/600 Ω Output1, 2 : 1.2V/600 Ω Balanced Output : 1.2V/600 ohm
Maximum Output (1 kHz, THD : 0.01%)	Output1, 2 : 20 V
Total harmonic distortion rate (20 Hz to 20 kHz)	Phono MM : not more than 0.005% CD, Tuner, Line, Tape Play1, 2 : 0.003% or less
Intermodulation distortion rate (60 Hz : 7 kHz = 4 : 1, SMPTE method)	Phono MM : not more than 0.005% CD, Tuner, Line, Tape Play1, 2 : 0.003% or less
Frequency characteristic	Phono MM : 20 Hz to 20000 Hz, ± 0.2 dB CD, Tuner, Line, Tape Play1, 2 : DC to 500000 hz, + 0 -3dB
Signal-to-noise ratio (A network, short circuit)	Phono MC : 70 dB or more Phono MM : 90 dB or more CD, Tuner, Line, Tape Play1, 2 : 110 dB or higher
Subsonic filter	8 Hz (-3dB), 6dB/oct.
Power supply voltage	100V
Rated power consumption	20W
External dimensions	Width 460x Height 137x Depth 383 mm
Weight	16.5kg