AtomMarkt Auction - Auction Details

Auction Details

Type

Stereo pre-main amplifier

Power Amplifier Unit

Circuit system

Pure complimentary service OCL

Effective output (both channels driven, 20 Hz to 20 kHz)

45W + 45W (4 Ω)
40W + 40W (8 Ω)

Harmonic distortion factor (20 Hz to 20 kHz)

0.1% or Less (Effective Output)
0.05% or Less (8 Ω at 20W output)
0.05% or Less (8 Ω at 1W output)

Cross modulation distortion factor

0.1% or Less (Effective Output)
0.05% or Less (8 Ω at 20W output)
0.05% or Less (8 Ω at 1W output)

Output Bandwidth (IHF, both channel drives)

5 Hz ~ 30 kHz (Distortion Factor 0.1%)

Frequency characteristic

10 hz to 80 khz + 0 -1dB

Input Sensitivity / Impedance

Power amp in : 1V/50k Ω

Output terminal

Speaker A / B : 4 Ω ~ 16 Ω
Speaker A + B : 8 Ω ~ 16 Ω
Headphone : 4 Ω ~ 16 Ω

Damping factor (20 Hz to 20 kHz)

25 or More (8 Ω)

S/N (IHF, A-Network, short circuit)

100 dB or more

Preamplifier Section

Circuit system

Equalizer amplifier : Two positive and negative power supplies, three stages connected directly
Control amplifier : Positive and negative 2 power supply, first stage FET

Input Sensitivity / Impedance

Phono1, 2 : 2.5mV/50k Ω
Tuner, Aux, Tape PB1, 2, DIN : 150mV/50k Ω

Phono maximum allowable input (harmonic distortion rate 0.1%)

200mV(1kHz)

Output Level / Impedance

Tape Rec1, 2 : 150 mv
Tape Rec2 (Din) : 30mV/80k Ω
Pre out : 1V/1k Ω

Harmonic distortion factor (20 Hz to 20 kHz)

Not more than 0.05%

Frequency characteristic

Phono (RIAA deviation) : 30 Hz to 15 kHz ± 0.3 dB
Tuner, Aux, Tape PB : 10 Hz to 50 kHz + 0 -1dB

Tone control

Bass:	± 7 dB (100 Hz) / ± 11 dB (100 Hz) Turnover Frequency : 200Hz/400Hz
Treble:	± 7 db (10 khz) / ± 11 db (10 khz) Turnover Frequency : 5kHz/2.5 kHz

Filter

Low : 30 Hz, 6dB/oct.
High : 8 kHz, 6dB/oct.

Loudness contour (Volume -40dB)

+8.5dB(100Hz)
+4dB(10kHz)

Muting

-20dB

S/N (IHF, A-Network, short circuit)

Phono : 70 dB or more
Tuner, Aux, Tape PB : 90 dB or higher

Semiconductor used

Transistor : 35
FET : 2
Diode, etc. : 21

AC outlet

Power switch interlock : 2 systems
Power switch not linked : 1 system