OTTO/SANYO DCA-450 Integrated Amplifier Refurbished Serviced Shipped from Japan

Description

OTTO/SANYO DCA-450 Integrated Amplifier Refurbished Serviced Shipped from Japan
OTTO/SANYO DCA-450 Integrated Amplifier Refurbished Serviced Shipped from Japan
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OTTO / SANYO DCA-450 Integrated Amplifier Refurbished Serviced
The Integrated Amplifier which adopted composition almost identical with DCA-650.
The DCA-450 uses high quality fT and small input capacitance small transistors. Moreover, only one place between pre-main is used for phase correction, and it is kept to the minimum minimum. In addition, we also banish stray capacity as much as possible. These measures improve the slew rate and enable amplification that is more faithful to the input signal.
The equalizer circuit of the preamplifier part has high voltage utilization because it adopts a three-step direct connection system of PNP-NPN-PNP, and the output impedance is kept low at the final stage by the emitter follower. For this reason, the allowable input of the high region does not drop by NF. In addition, this circuit can reduce the RIAA deviation and can apply NF up to DC.
The equalizer element selects and uses a thing with little aging and environmental change. For example, capacitors use a special Mylar type that has no leakage current and good frequency characteristics compared to tantalum etc.
There are minor scratches and dirt . There are minor scratches on the side wood
Checked, maintained, adjusted.
It is a fully operational product.
This unit has been serviced and it's in good working order. Please inspect images for condition reference.
Model
Pre-main amp
Music power
80W
Effective output (distortion rate 0.1%)
33
W / 33 W (8 Ω, single channel drive, 1 kHz) 26 W + 26 W (8 Ω, dual channel drive, 1 kHz)
23 W + 23 W (8 Ω, dual channel drive, 20 Hz to 20 kHz)
Harmonic distortion factor
0.1% (at effective output)
0.04% (at 1 W output)
Intermodulation distortion factor
0.2% (at effective output)
0.04% (at 1 W output)
Output bandwidth (IHF, distortion rate 0.5%)
5 Hz to 80 kHz
Frequency characteristic
7 Hz to 100 kHz
Dumping factor
50 (1 kHz, 8 Ω)
SN ratio (IHF-A network)
110 dB or more
Input sensitivity / impedance
1V / 50kΩ
Residual noise
0.3mV (8Ω)
Slew rate
10, 20V / μs
Input sensitivity / impedance
Phono1 / 2: 2.5mV / 50kΩ
Tuner, Aux1 / 2, Tape PB1 / 2
: 140mV / 60kΩ Mic: 2.5mV / 50kΩ
Phono maximum allowable input
400mV (RMS) 1100mV (pp)
Mic maximum allowable input
500mV (pp)
SN ratio
Phono 1/2, Mic: 70 dB
Tuner, Aux 1/2, Tape PB 1/2: 90 dB or more
Output level / impedance
Tape rec1 / 2: 140 mV / 1 kΩ
Tape rec (DIN): 35 mV / 80 kΩ
Pre out (rated): 1.2 V / 1 kΩ
Harmonic distortion factor
0.04% (at rated output)
Phono RIAA deviation
30 Hz to 15 kHz ± 0.5 dB
Frequency characteristic
Tuner, Aux, Tape PB: 10Hz to 60kHz
Tone control
Bass:
Treble:
± 10 dB (50 Hz, turnover 250 Hz)
± 10 dB (100 Hz, turnover 500 Hz)
± 10 dB (10 kHz, turnover 2.5 kHz)
± 10 dB (20 kHz, turnover 5 kHz)
Low filter
70Hz, 12dB / oct
Loudness control
+8 dB (100 Hz)
power outlet
Switch interlocking: 2 systems, 150W
switch non interlocking: 1 system, 200W
Power-supply voltage
AC 100 V, 50 H / 60 Hz
External dimensions
Width 420x height 130x depth 330mm
weight
9.3 kg
Please inspect pictures for condition reference.
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User instructions are mostly written in Japanese. Voltage is 100~110V (+/- 10%) no problem for USA or Canada. Now, for countries with 220~240V please use a step down transformer.
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