Onkyo A-8780

Data

General

• Manufacturer: Onkyo
• Model: A-8780 / AR-700 = international designation
• Type: Integrated amplifier
• Years of manufacture: 1990 - 1992
• Color: only in black
• Remote control: yes ( RC 180 S )
• Power consumption: 360 W
• Dimensions: 435 x 157 x 391 mm (WxHxD)
• Weight: 14.5 kg
• New price approx.: 1'200 DM

Connections

• Number of inputs: 8 (Cinch)

Phono (MM/MC)

• • Tuner
  • CD
  • Tape 1+2
  • Dat
  • Aux 1+2
• Number of outputs: 4
  • Headphones (6,3mm jack)
  • Tape Rec. 1+2
  • Dat Rec.
  • (2x loudspeaker)

Technical Data

• Continuous power:
  • 8 Ohm: 2x 105W
  • 4 Ohm: 2x 160W 1KHz(DIN)

Dynamic power:

• • 8 Ohm: 2x 160W
  • 4 Ohm: 2x 240W
• Filtering: 2x 18000 mF ( 63V )
• Total harmonic distortion: 0,008% * Attenuation factor: 150
• Attenuation factor: 150 (at 8 Ohm)
• Input (Sensitivity/Impedance)
  • Phono (MM): 2.5 mV / 50 kOhm
  • Phono (MC): 160 µV / 130 Ohm

CD: 150 mV / 30 kOhm

• • Output (level/impedance):
  • Rec. Out: 150 mV / 1 kOhm
• Frequency response: 2 - 50,000 Hz (+0 dB, -1 dB).
• Tone control:
  • Bass: ±8 dB (at 100Hz).

treble: ±8 dB (at 10kHz)

• Loudness: no
• Subsonic: yes
• Mute: yes
• Direct/Line-Straight: yes
• Ripple distance (shorted):
• Stereo Channel Separation:
• Signal-to-noise ratio: 75db (phono), 107db (CD)

Special Features

• Special feature on this unit was the motorized switching mechanism for Alps input selection.
• All made of solid aluminium, split case bottom.

Remarks

• Other models in the same series:
• Onkyo A-8620
• Onkyo A-8630
• Onkyo A-8640
• Onkyo A-8650
• Onkyo A-8670
• Onkyo A-8690
• Onkyo A-8990

• Successors:
• Onkyo A-8870
• Onkyo A-9711

Pictures

• [[Picture: Onkyo A-8780

• Picture: Onkyo A-8780

Reviews

• It is similar with the A-8670. New is the remote control.
• Replacement relay still available ( Omron G4W 2212P US TV5 HP 12VDC ) unit price 6-9 Euro

Beärenstarke power amplifiers According to test report in stereo from 1990 : 141 W at 8 Ohm / 238 W at 4 Ohm / 351 W at 2 Ohm According to Stereoplay review : 135 W at 8 Ohm / 220 W at 4 Ohm / 300 W at 2 Ohm and at 1 Ohm

• Competition : Onkyo A-8780, Onkyo A-8870, Pioneer A-702 R, Yamaha AX-890, Sony TA-F 690 ES, Denon PMA-1080 R, Denon PMA-1315 R