Sharp-Optonica SO-1800/ Yamaha C-2/ Yamaha C-4 Pre-amplifier

Sharp-Optonica в хорошем состоянии и полностью рабочий аппарат. Японская версия 100В. Трансформатор в комплекте. Очень редкий передний усилитель.
Очень хороший звук. Цена 200е.

Yamaha C-2 предусилитель с превосходным звуком. Японская версия 100 Вольт, понижающий трансформатор в комплекте. Обслуживание сделано. Цена 450е.

Description
The smooth, quiet and faithful reproduction given by the C-2 is such an advance that it can reveal new delights in long familiar favourite program sources with your other existing audio components.

Frequency response: 5Hz to 100kHz

Total harmonic distortion: 0.003%

Input sensitivity: 0.5mV (MC), 2mV (MM), 120mV (line)

Signal to noise ratio: 70dB (MC), 85dB (MM), 100dB (line)

Output: 120mV (line), 0.775V (Pre out), 18V (Pre out Max)

Semiconductors: 2 x IC, 4 x FET, 63 x transistors, 23 x diodes, 7 x zener diodes

Dimensions: 435 x 72 x 320mm

Weight: 7.8kg

Yamaha C-4 предусилитель высокого качества. Японец 100 Вольт. Трансформатор в комплекте. Обслуживание сделано. Цена 400е.

Specifications
Frequency response: 5Hz to 100kHz

Total harmonic distortion: 0.0035%

Input sensitivity: 0.1mV (MC), 2.5mV (MM), 150mV (line)

Signal to noise ratio: 77dB (MC), 85dB (MM), 100dB (line)

Channel separation: 85dB (MM), 85dB (MC), 85dB (line)

Output: 150mV (line), 2V (Pre out), 10V (Pre out Max)

Dimensions: 435 x 116 x 376mm

Weight: 8.6kg

Yamaha C-4 цена 420e.

Model Rating

Type

Control amplifier

Amplifier Unit

Input Sensitivity / Impedance

Phono1/2 : 2.5 mV / variable
Phono3 : 100 μ V/50 Ω
Aux, Tuner, TapePB1/2 : 150mV/47k Ω

Cartridge load

Load resistance : 100 Ω, 33k Ω, 47k Ω, 68k Ω, 100k Ω
Load capacity : 100 pF, 150 pF, 220 pF, 330 pF, 470 pF

Maximum Allowable Input (1 kHz)

Phono1/2:285mV(0.01%)
Phono3:10mV(0.02%)
Aux, Tuner, Tape : 8.2 v (0.01%)

Rated Output / Impedance / Maximum Output

Pre-out1/2 : 2V/600 Ω or less / 10 V
Rec out1/2 : 150mV/180 Ω / 15 V

Frequency characteristic

Phono1/2/3 : 20 Hz to 20 kHz 0 ± 0.2 dB (RIAA deviation)
Aux, Tuner, TapePB1/2 : 5 Hz to 100 kHz 0 ± 0.5 dB

Total harmonic distortion factor

Phono1/2 : 0.0035% or less (Vol. -30dB, 2 V output)
Phono3 : 0.1% or less (Vol. -30dB, 2 V output)
Aux, Tuner, TapePB1/2 : 0.0035% or less (Vol. max, 10 v output)

Inter-channel crosstalk (1 kHz)

Phono1/2 : 85 dB or more (Vol. -30dB, 5.1k Ω short)
Phono3 : 85 dB or more (Vol. -30dB, 0 Ω short circuit)
Aux, Tuner, TapePB1/2 : 85 dB or more (Vol. -30dB, 5.1k Ω short)

Cross modulation distortion factor

Aux, Tuner, TapePB1/2 : 0.0035% or less (10 v output)

Signal-to-noise ratio
(IHF-A network at rated output)

Phono1/2 : 85 dB or more (input short circuit)
Phono1/2 : 73 dB or more (input open)
Phono3 : 77 dB or more (input short circuit)
Aux, Tuner, TapePB1/2 : 106 dB or more (input short, Tone bypasson)
Aux, Tuner, TapePB1/2 : 100 dB or more (input short, tone bypass off)

Residual noise

0.2 μ V or less

Tone Control Width

± 10 dB (both Bass and Treble)

Turnover frequency

Bass : 100 Hz to 500 Hz Continuously Variable
Treble : continuously variable from 1 kHz to 5 kHz

Filter characteristic

Subsonic Filter : 15 Hz, 12dB/oct.
High Filter : 10 kHz, 12dB/oct.

Audio Muting

-20dB

Headphone Amplifier Section

Gain (Pre out output 0.1 V)

6.3 V (Load Open)

Output impedance

330 Ω

Maximum power output
(THD 0.05%, 20 Hz to 20 kHz)

Load released : 18 V or more
8 Ω Load : 19 mW or more

Total harmonic distortion factor (8 Ω Load)

0.02% or Less (20 Hz to 20 kHz at 12 mW output)

Residual Noise (IHF-A)

50 μ V or Less (Load Open)

Frequency characteristic

20 Hz to 50 kHz ± 0.5 dB

<Others>

AC outlet

switched:400Wmax
unswitched:200Wmax

Power consumption

40W

External dimensions

Width 435x Height 116x Depth 376 mm

Weight

8.5kg