Audio Database


32,000yen(1975 release)

The Integrated Amplifier which carries sufficient power and abundant functionalities.

The dual transistor with high stability to which the property was equal is adopted as an output stage, the power stabilized over the wide band has been obtained, and circuitry is made into the low distortion whole page hardwired-connection pure complimentary scheme.
Furthermore, by supplying +-2 power source to all the circuitries, a distortion harmful from low-pass to a high region was pressed down, and the stable operation has been obtained. Moreover, +-power source is used and the it1 noise generated at the time of a switchpoint switching is made to reduce.

The two-step hardwired-connection circuitry which combined the low-noise transistor and the part selected carefully is adopted as an equalizer part, and it has become it with the low distortion by the low-noise.

The tone control part has adopted the click stop type, and has acquired the gentle property by two-step hardwired-connection tone amplifier and CR type tone control circuit.

The mic mixing circuitry is carried. The mixed voice can be taken out from a sound-recording termination, and also can perform a coordination of mic level.

The electronic circuitry and the protection network by relay are carried.

The one-touch push-button type is adopted as an input selector.

A high filter, a loudness, a speaker changeover switch, a tapes monitor, a mode switching, a headset jack, mic level, etc. are carried.

Rating of a mode
Form Integrated Amplifier
Effective output 22W+22W (8 ohm, both channel operation, 40Hz - 20kHz)
25W+25W (8 ohm, both channel operation, 1kHz)
28W+28W (8 ohm, a one-side-channel operation, 1kHz)
Music power 84W (4 ohms, 1kHz)
THD 0.15% or less
Cross modulation distortion (70Hz:7kHz=4:1, SMPTE) 0.2% or less (Output power)
Power Band Width (IHF) 10Hz - 40kHz
Frequency characteristic (1 W:00) 10Hz-40kHz+0.5 -1.5 dB
RIAA deflection (30Hz - 15kHz) ±0.5dB
Dumping factor 50 (8ohms)
Input sensitivity/impedance Phono: 2.5mV / 50kohm
((Less than) 200mV of maximum permissible inputs, and THD 0.2%)
Mic: 2.5mv/10kohm
Tuner, Aux, Tape Monitor:130mV /, 50kohm
Output voltage (1kHz) Tape Rec(Pin):100mV
A hum and a noise Phono: 75dB or more
Tone control Bass:±12dB (50Hz)
Treble: ±12dB (15kHz)
Loudness (Volume-30dB o'clock) + 10dB (50Hz), +8dB (10kHz)
A high filter 7kHz, 6dB / oct
Power dissipation 58W
Dimensions Width 400x height 120x depth of 240mm
Weight 5.5kg