Японский предварительный усилитель Accuphase C-280V. Год выпуска аппарата 1990, стоимость на момент производства составляла 800,000 ¥.
Спецификация:
Model : Stereo pre-amplifier
Frequency characteristic : balanced input (CD, Line): 1.0Hz ~ 350kHz +0 -3.0dB
20Hz ~ 20kHz +0 -0.2dB
CD, Tuner, Line, Tape Play: 1.0Hz ~ 350kHz +0 -3.0dB
20Hz ~ 20kHz +0 -0.2dB
AD: 20Hz ~ 20kHz ± 0.2dB
Total harmonic distortion : 0.005% (in all of the input terminal)
Input sensitivity / impedance (at the rated output /0.5V output) AD MM: 2.0mV / 0.5mV / 47kΩ
AD MC (26dB): 0.1mV / 0.025mV / 10Ω, 30Ω, 100Ω
AD MC (32dB): 0.05mV / 0.0125mV / 10Ω, 30Ω, 100Ω
Balanced: 252mV / 63mV / 40kΩ (20kΩ / 20kΩ)
Unbalanced: 252mV / 63mV / 20kΩ
Rated output / impedance Balanced output: 2.0V / 10Ω (5Ω / 5Ω)
Unbalanced output: 2.0V / 5Ω
Tape rec: 252mV / 200Ω
S / N · input referred noise Input terminal Input Short IHF-A correction EIA S / N
Rated input S / N Equivalent input noise
AD MM: 90dB -140dBV 86dB
AD MC (26dB): 80dB -154dBV 85dB
AD MC (32dB): 75dB -154dBV 85dB
Balanced: 111dB -123dBV 95dB
Unbalanced: 111dB -123dBV 95dB
Maximum output level
(Strain rate 0.005%, 20Hz ~ 20kHz) Balanced output: 7.0V
Unbalanced output: 7.0V
Tape rec: 19.0V
AD maximum input voltage
(1kHz, distortion rate 0.005%) MM: 300mV
MC (26dB): 15mV
MC (32dB): 7.5mV
Minimum load impedance Balanced output: 600Ω (300Ω / 300Ω)
Unbalanced output: 600Ω
Tape rec: 10kΩ
Gain Balanced input → Balanced output: 18dB
Balanced input → Unbalanced output: 18dB
Unbalanced input → Balanced output: 18dB
Unbalanced input → Unbalanced output: 18dB
Unbalanced input → rec output: 0dB
AD MM input → Balanced output: 54dB
AD MM input → Unbalanced output: 54dB
AD MM input → rec output: 36dB
AD MC (26 / 32dB) input → Balanced output: 80 / 86dB
AD MC (26 / 32dB) input → Unbalanced output: 80 / 86dB
AD MC (26 / 32dB) input → rec output: 62 / 68dB
Loudness compensator
(Volume -30dB) 1: + 3dB (100Hz)
2: + 8dB (100Hz), + 6dB (20kHz)
Subsonic Filter 10Hz, -18dB / oct
Attenuator -6dB, -20dB, -30dB, -∞
Semiconductor used Transistor: 216 pieces
FET: 15 pieces
IC: 18 pieces
Diode: 158 pieces
Power-supply voltage : AC100V / 117V / 220V / 240V, 50Hz / 60Hz
Power consumption : 53W
External dimensions : Width 468 × height 171 × depth 415mm
Weight : 25.2kg
