Integra Onkyo A 820GGTR, Fully Functional, 100V

The excellent amplifier with very few marks of wear over the years. Have been professionally serviced, tested, cleaned, and replaced components only that were out of spec. All parts are still original.
You will have the quality of build and sound like a 70s-80s amp, which is only a fraction of what you would pay for a modern one to achieve such a level of sound quality.

Japanese version 100V.

You will need a step-down transformer to run it in the UK or Europe. This is not included in the purchase, but I can guide you in purchasing it or supply it for an extra fee. Also, It can be converted to 240V internally for about a 150-170£ extra fee (depending on the amp's power) if you request it.
Feel free to contact me if you have any questions and discuss the price, or have any concerns about which amplifier you choose from those I have in my shop.I provide 5-star friendly customer service with after-sales support.

   Description:

A pre-main amplifier equipped with a super servo integral system and a delta turbo power supply.

In addition to theoretically supporting the cause of the power of large power sources, we have adopted a new circuit called "Delta Turbo Power Source," which reduces the factor that hinders the reproduction of energy sensation to about 1/10 of the conventional one.
The power supply circuit of an amplifier generally consists of a transformer, a rectifier, and a Chemicon for smoothing. In operation, the DC current charged in the Chemicon acts like a battery to supply power to the speakers.
However, when the Chemi-Con actually operates, the impedance of the Chemi-Con varies depending on the frequency of the audio signal, so it sometimes does not work as a battery according to theory. In other words, when the frequency of the audio signal is high, the impedance becomes sufficiently low, so there is no problem. However, when the frequency of the audio signal is low, the effect of the transformer connected in parallel with the Chemi-Con appears.
In other words, the distortion generated in the AC power supply on the transformer side directly affects the power circuit, and this hinders the reproduction of the low-frequency energy sense.
When the capacitance of the Chemi-Con is small, the charge current fluctuates in synchronization with the audio signal, especially for low-frequency audio output when it is charged with the current, and intermodulation distortion occurs. Furthermore, for low-frequency audio signals, this distortion source is connected to the Chemi-Con and Para, so the effect will appear in the power amplifier circuit.
The Delta Servo Power Supply was developed as a result of clarifying the mechanism of strain generation in the power supply as described above. The cross-modulation strain generated in the power supply can be reduced to approximately 1/10 (-20dB) while the Chemi-Con and Transformer remain the same size as before.
In other words, the effect equivalent to 10 times the size of the power supply circuit is obtained.

cross-modulation

Technical data:

Output power (20Hz - 20kHz)

120W+120W (AUX->SP ​​Out, 8 ohm, both channel drive)

THD (20Hz - 20kHz)

0.008%/0.006%

(at the time [ At the time of AUX->SP ​​Out and an Output power ] of / 1 / 2 outputs)

0.003% (Phono man month->Rec Out, 3V)

0.01% (Phono MC->Rec Out, 3V)

Cross modulation distortion (AUX->SP ​​Out)

0.008%

Power Band Width

5Hz - 100kHz (IHF-3dB, THD 0.2%)

Dumping factor

100 (1kHz, 8ohms)

Frequency characteristic

• Phono->Rec out/RIAA deflection : AUX->SP ​​Out :
• 20Hz-20kHz�}0.2dB: 2Hz-100kHz+0 -3 dB

Input sensitivity/impedance

Phono man month: 2.5mV / 47kohm, 100kohm

Phono High MC: 2.5mV/100ohm

Phono MC: 150 microvolt/100ohm, 330ohm

Tuner, AUX, Tape Play: 150mV /, 47kohm

Phono maximum permissible input

(1kHz/10kHz, 0.05%)

Phono MM:300mV/1400mV

Phono High MC:300mV/1400mV

Phono MC:19mV/90mV

An Output voltage/impedance

Tape Rec: 150mV / 2.2kohm

Pre Out: 1.5V/600ohm

S/N ratio (IHF short)

Phono MM:88dB

Phono MC:70dB

Tuner, AUX, Tape Play: 100dB

Tone control (Vol-16dB)

Bass: �}8dB (70Hz)

Treble: �}8dB (20kHz)

Loudness

+4dB, +6dB (100Hz)

Subsonic Filter

15Hz 20Hz, 6dB/oct

Muting

-20dB

Power source

AC100V, 50Hz/60Hz

Power consumption

200W (Electrical Appliance and Material Control Law specification)

AC outlet

unswitched: One piece (200W)

switched: Two pieces (total 200W)

Dimensions

Width 471x height 175x depth of 431mm

Weight

23kg

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Disclaimer:

Although I take every precaution in managing my hi-fi and high-end products, there is a possibility that small scratches may occur during display and storage. I try to check and describe them as much as possible, but I cannot guarantee that every single part is a genuine product.
Additionally, what is depicted in the image is all that is included in the product. Please be sure to check the image, as the current state of the accessories and exterior condition will take precedence. I try to describe the condition of the product, such as scratches, sunburn, and dirt, as much as possible, but I may overlook them. It is not realistic to perfectly describe all of the product conditions.

Therefore, please ensure that you check the product's condition in an enlarged image. Scratches, sunburn, dirt, etc., that can be seen in an enlarged image are not a reason for return.

In addition, I do not accept returns due to minor scratches, sunburn, dirt, etc., that are difficult to see even in an enlarged image.

What is in the image is all that is in the product. Scratches, dirt, defective screws, peeling of glue, etc. on the inside and bottom that are not photographed. Deterioration due to aging. These parts that do not affect the function of the audio equipment are not covered by the warranty.