Specification of ONKYO - Integra A-701XG

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I have ONKYO TX-2000 with stk465 35WX2
is best old amp!!!


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Information ONKYO A-701XG

95,000 (around 1989)

The pre- main amplifier of the D/A converter built-in which adopts the BI-MOS drive amplifier.
The A-817XG was adopted for the analog base, 18 bit optical D/A converter which in this is protected with the sealed case was loaded, it has become the optical / coaxial digital corresponding amplifier.

Becoming independent on left and right, it loads the real 18 bit D/A converter to the D/A converter section.
Furthermore we load the ACCU BIT 4 system in order to make the linearity show which is superior the very little signal regeneration time, we adjust the error of the ladder network which barely it occurs concerning each superior 4 bits left and right.
Because of this, the linearity at the time of the small signal has been improved.
The digital input signal is caught securely, the 2PLL digital interface demodulator circuit which holds down the strain of the time base of analog output and 8 time over sampling * digital filter which cuts the noise component are adopted.
In addition, in order to hold down the emission of noise to the analog section, the digital circuit the seal is done with the pure copper sealed case.
Digital input light of 2 systems / has adopted the coaxial automatic electronic switch. In addition, input and digital out of coaxial 3 system and optical 2 system (the same axis) it is on-board.
You can verify sampling frequency by the Digital LOCK in Gee k tar of the 32/44.1/48kHz.
The digital section, when inquiring about digital input, in order to hold down digital noise, has loaded the automatic digital OFF circuit which excludes digital noise turning to a power source OFF.

With the system to which the BI-MOS drive amplifier has the MOS FET and the bipolar * transistor respective output step, drives the speaker with both, attendant upon the increase of input potential, first the MOS The FET stands and rises, it is designed to be the structure that after that the bipolar ¥ transistor stands up.
Because of this BI-MOS synthetic quality in the small electric current territory shows the quality of the loose standing rising curve which the MOS FET has, in the heavy-current territory the bipolar ¥ transistor it is comfortable and rectilinear quality becomes dominantly.
As a result, + / - as for overall characteristic in the crossover territory you can obtain the quality which is close to the quite straight line, the quality which is superior in the linearity which has the extension even in the large amplitude territory actualizes.

In order power transformer to prevent the fact that the harmful noise due to magnetic induction inside the amplifier circuit as an occurrence source of the magnetic leakage ¥ flux, is given, developing & adopting Laser trance.
This Laser trance has adopted the EI core of the new model whose width of the peripheral section is wider than standard, it makes the reluctance of the peripheral section decrease, it has made the structure to which magnetism is difficult to leak from the core.
Furthermore, around the core the seal it does strictly with the silicon steel sheet sealed material, administers the seal even around the coil, prevents a leak of the flux.
Because of this the leakage * flux has been decreased up to 1 of 20 parts vis-a-vis former EI trance.

The input selector and the wireless remote control which can control volume with labor assistant standard are equipped.
Furthermore, mechanical it drives with the motor we adopt system, we hold down the occurrence of the non- linearity strain like the solid state switching, prevent the adverse effect to the sound quality.

3 systems of the image input/output terminal it loads and the time, video recording and playback and BGV playback it is possible.

We adopt optical drive and the current converter for the differential amplifier of the power amplifier circuit first level, we obtain the reference voltage which is not fluctuation from the light energy which the photoelectromotive force element creates and stabilizes.
This voltage / the electric current which uses the operational amplifier (V-I) fixed electric current is created in the conversion circuit, the differential amplifier is driven.
Because of this the unstable operation which originates in the fluctuation component and the power source ripple fluctuation et cetera by the music signal is held down.

Because removes the interference which is during each staging, it actualizes pure signal transmission furthermore without letting flow unnecessary electric current to the gland line which is during staging, the secondary winding of power transformer it is separated freeing to the power amplifier section, the EQ amplifier section, the micro-computer section and the D/A converter section et cetera.

Putting the heat sink, it separates input, the voltage amplifier and the power amplification section, furthermore also the power source section and the micro-computer section et cetera have done the independent * seal, the block separated construction which removes mutual interference completely is adopted.

In order to reproduce all music signals to high purity, the source the source direct switch which is sent to the power amplifier to direct is loaded via private volume.
When position is designated as the TONE, adjustment is possible with direct tone. In addition, with Processor-TONE position the ƒOƒ‰ƒCƒR and the like which is connected possible the control by the equipment outside is.

The high-speed diode is adopted for twin roll Chemical Condenser and all power source rectifier diodes of large capacity low impedance at power source Chemical Condenser.
In addition, volume of die-cast * D tent type is adopted to volume, selecting also the part, you have used e.g., the gold-plating * pin jack, the large-sized speaker terminal and the polarity indicatory attaching AC cord/code et cetera are adopted.

Rating of type D/A converter on-board BI-MOS drive amplifier
100W + 100W (CD -> SP Out, 6 Omega, both ch drive)
80W + 80W (CD -> SP Out, 8 Omega, both ch drive)
2 Omega: 245w + 245w
4 Omega: 195w + 195w
6 Omega: 155w + 155w
0.0015% (CD -> SP Out, at the time of 10W output, 8 Omega)
0.003% (Phono mm -> Rec Out, at the time of 3v output)
0.015% (Phono MC -> Rec Out, at the time of 3v output)
0.004% (CD -> SP Out, at the time of rated output)
5hz - 100kHz (IHF-3dB and THD 0.2% and 8 Omega)
150 (1kHz, 8 Omega)
Phono -> Rec Out (RIAA deviation): 20Hz - 20kHz�}0.2dB
CD -> SP Out: 2hz - 100kHz+0 -3dB
Mm: 150mV/710mV (1kHz/10kHz, 0.005%)
MC: 9mV/42mV (1kHz/10kHz, 0.005%)
Phono mm: 2.5mV/47k Omega
Phono MC: 160 mu V/220 Omega
CD and Tape Play, Processor IN, other things: 150mV/47k Omega
Tape Rec, Processor Out, other things: 150mV/560 Omega
VCR and other things: 1vp-p/75 Omega
Electrical: 0.5vp-p/75 Omega
Optical: TOSLINK standard
32, 44.1, 48kHz
Phono mm: 94dB (5mV input)
Phono MC: 75dB (0.5mV input)
CD and other things: 107dB
Bass: �}10dB
Treble: �}8dB
AC100V and 50Hz/60Hz
Switched: 1 system, 100W
Unswitched: 2 systems, total 100W
Width 435�~ height 161�~ depth 394mm
Attachment: Remote control RS-160CA
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