Audio Database

The pictorial image of Integra A-711/150

ONKYO Integra A-711/150 220,000yen(around the 1974 time)
200,000yen(? at the 1970 in-the-early time)

The Integrated Amplifier which removed the high order harmonic content includeded distorted, and realized the clear tone quality while having improved the linearity at the time of the Koide power which was a weak point of the conventional high power amplifier.

While making the electric current at the time of the non-signal of a power transistor into a value as big as 300mA and raising a linearity at the time of the Koide power from 0 to about 1.5W,To the power more than the time of the Nakade power, a total of eight power transistors incorporated as an object for a linearity correction work, and distortion said to be cheap per ear is decreased.
This has the delicate tone quality of the force of the Oide power amplifier, and the Koide power.

It is a peculiar design which carries an input terminal in a top panel.


Rating of a mode
Form Integrated Amplifier
<Power amplifier part>
Circuit system Special pure contest whole page hardwired-connection D&D
Output power (1kHz) 8ohm: 75W+75W
4ohm: 100W+100W
Dynamic power (IHF 8ohm) 200W
THD (1kHz) 0.03% or less (at the time of an Output power)
0.03% or less (at the time of 10W output)
Power Band Width (IHF, -3dB, THD 0.2%) 10Hz - 100kHz
SN ratio (IHF A network) 110dB
Dumping factor (DC-20kHz, 8ohms) 80
Load impedance 4ohm-16ohm
Rated input voltage / impedance
(10Hz - 50kHz)
Gain 28.5dB
<Preamplifier part>
Input sensitivity/impedance Phono: 1.2, 2.4 or 4.8mV / 50kohm
Tuner, AUX, Play:100mV /, 100kohm
THD (1V, 1kHz) 0.03% or less
RIAA deflection Less than ±0.5dB
Maximum permissible input
(1kHz/10 kHz, Input-sensitivity 2.4mV o'clock)
S/N (IHF A network) Phono1, 2:75dB
Tuner, AUX, Play: 90dB
Tone control (2dB step type) Bass: ±10dB (100Hz, F.S.400Hz)
Treble: ±10dB (10kHz, F.S.2kHz)
Turnover frequency Bass: 125Hz, 400Hz
Treble: 2kHz, 8kHz
Light filter High: 5kHz, 20kHz, 12dB / oct
Low: 10Hz, 30Hz, 12 dB/oct.
Dimensions Width 490x height 182x depth of 460mm
Weight 24.5kg