Difference between revisions of "Pioneer A-656 MK II"
(Info from Genuine Pioneer 1990 brochure)
 
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{{braucht Arbeit}}
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__NOTOC__
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*Eccellente e grosso amplificatore integrato della prestigiosa serie
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== Data ==
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*REFERENCE STEREO AMPLIFIER
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'''General'''
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*tra i modelli di punta di casa Pioneer negli
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* Manufacturer: [[Pioneer]]
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*anni '90,
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* Model: A-656 Mark II
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*modello A 656 MK II,
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* Type: Integrated amplifier
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*l'ultima e più recente versione uscita, in (meno diffusa e più rara)  
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* Years of manufacture: 1990 - 1991
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*versione color argento,  
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* Made in: Japan
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*molto bello ed elegantissimo,  
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* Colors: Black, Silver (A-656-G MK II)
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*fratello dei celebri A 757 ed A 858,  
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* Remote control: No
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*eccezionali amplificatori dalle prestazioni
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* Power consumption: 650 W max.
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*HI END che non avevano nulla da temere dalla concorrenza anche la più blasonata!!
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* Dimensions: 420 x 162 x 435 mm (WxHxD)
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*Costruzione robusta e grandi prestazioni,  
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* Weight: 13.5 kg
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*generoso dissipatore a nido d'ape in alluminio,
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* Original price approx.: 800 DM
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*Potenza DIN sui due canali
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**120 Watt su 4 Ohm;
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**80 Watt su 8 Ohm,
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'''Connections'''
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*quindi avrete tanta potenza disponibile e...
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* Number of inputs:
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*tutti Watt REALI....sembrano molti molti di più.....non come le amplificazioni di plastica di oggi; fattore di smorzamento 8 Ohm: 200/70(da 1 kHz/20 Hz a 20 kHz), peso di circa 14 Kg!!!
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** 1x Phono (Cinch): 2.5 mV / 50 kOhm (MM), 0.2 mV / 100 Ohm (MC).
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*Dimensioni L x P x H 420 x 435 x 162 mm.  
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** CD, Tuner, Line, 3x Tape In (Cinch): 150 mV / 50 kOhm
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*Suono tipico Pioneer, dinamico, aperto e limpido,molto apprezzato da sempre.  
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* Number of outputs:
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*Solo pochissimi segni e poco visibili e in maggior parte sul coperchio superiore, molto bello, come da foto,  
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** TAPE REC: 150 mV / 2,2 kOhm
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*interno pulito e ordinato.
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** Loudspeaker: A, B, A + B, OFF
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** Headphones: Low impedance
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'''Technical Data'''
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* Continuous power (at distortion factor)
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** 8 Ohm: 70W + 70 W (20 - 20.000 Hz, T.H.D. 0.005%)
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** 4 Ohm: 95W + 95 W (20 - 20.000 Hz, T.H.D. 0.008%)
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** 2 Ohm: 160W + 160 W (T.H.D. 0.008%)
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* Dynamic power
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** 4 Ohm: 150W + 150 W
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** 2 Ohm: 190W + 190 W
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* total harmonic distortion:
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**0.005% (20 - 20.000 Hz, T.H.D. 70W for channel)
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**0.008% (20 - 20.000 Hz, T.H.D. 95W for channel)
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* Attenuation factor: 200 / 70 (8 Ohm, 1 kHz / 20 - 20 kHz)
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* Frequency response:
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** PHONO (RIAA)
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** MM 20 - 20.000 Hz ±0.2dB
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** MC 20 - 20.000 Hz ±0.3dB
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** CD, TUNER, AUX, TAPE 1 - 150.000 Hz ±0dB - 3dB
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* Signal to noise ratio IHF:
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** PHONO (MM/MC) 95dB / 77dB
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** CD, TUNER, AUX, TAPE 110dB
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* Stereo channel separation:
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* Tone control:
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** Bass: yes, ±8db (100 Hz).
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** Treble: yes, ±8db (10 kHz)
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** Loudness: yes, +5 db (100 Hz)/+3 db (10 kHz)
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** High Filter: no
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** Low Filter (Subsonic): yes, 17 Hz (12 db/oct.)
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** Mute: no
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** Direct/Line-Straight: yes
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== Remarks ==
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* Previous model:
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* [[Pioneer A-656]]
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* Successor model:
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* [[Pioneer A-676]]
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* Other models in the same series:
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* [[Pioneer A-227]]
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* [[Pioneer A-337]]
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* [[Pioneer A-447]]
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* [[Pioneer A-656 MK II]]
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* [[Pioneer A-757 MK II]]
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* [[Pioneer A-858]]
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 +
 
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== Pictures ==
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* Excerpt from Test: Denon PMA-860, Dual CV-5670, Pioneer A-656 II, Sony TA-F 550 ES
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[[File:Denon PMA-860-Test-1990.jpg]]
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== Reports ==
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* Report in "FonoForum" 7 / 1991
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* External differences to the A-656: smaller knobs replaced by cylindrical versions resembling the large knobs.  
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* Golden dot ''only'' on the volume potentiometer.
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* Inside: still horizontal circuit boards, but already no honeycomb housing around the volume potentiometer at the back right of the unit anymore
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== Left ==
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[[Category:Integrated amplifier]]

Latest revision as of 14:04, 28 September 2024

Data[edit]

General

  • Manufacturer: Pioneer
  • Model: A-656 Mark II
  • Type: Integrated amplifier
  • Years of manufacture: 1990 - 1991
  • Made in: Japan
  • Colors: Black, Silver (A-656-G MK II)
  • Remote control: No
  • Power consumption: 650 W max.
  • Dimensions: 420 x 162 x 435 mm (WxHxD)
  • Weight: 13.5 kg
  • Original price approx.: 800 DM


Connections

  • Number of inputs:
    • 1x Phono (Cinch): 2.5 mV / 50 kOhm (MM), 0.2 mV / 100 Ohm (MC).
    • CD, Tuner, Line, 3x Tape In (Cinch): 150 mV / 50 kOhm
  • Number of outputs:
    • TAPE REC: 150 mV / 2,2 kOhm
    • Loudspeaker: A, B, A + B, OFF
    • Headphones: Low impedance


Technical Data

  • Continuous power (at distortion factor)
    • 8 Ohm: 70W + 70 W (20 - 20.000 Hz, T.H.D. 0.005%)
    • 4 Ohm: 95W + 95 W (20 - 20.000 Hz, T.H.D. 0.008%)
    • 2 Ohm: 160W + 160 W (T.H.D. 0.008%)
  • Dynamic power
    • 4 Ohm: 150W + 150 W
    • 2 Ohm: 190W + 190 W
  • total harmonic distortion:
    • 0.005% (20 - 20.000 Hz, T.H.D. 70W for channel)
    • 0.008% (20 - 20.000 Hz, T.H.D. 95W for channel)
  • Attenuation factor: 200 / 70 (8 Ohm, 1 kHz / 20 - 20 kHz)
  • Frequency response:
    • PHONO (RIAA)
    • MM 20 - 20.000 Hz ±0.2dB
    • MC 20 - 20.000 Hz ±0.3dB
    • CD, TUNER, AUX, TAPE 1 - 150.000 Hz ±0dB - 3dB
  • Signal to noise ratio IHF:
    • PHONO (MM/MC) 95dB / 77dB
    • CD, TUNER, AUX, TAPE 110dB
  • Stereo channel separation:
  • Tone control:
    • Bass: yes, ±8db (100 Hz).
    • Treble: yes, ±8db (10 kHz)
    • Loudness: yes, +5 db (100 Hz)/+3 db (10 kHz)
    • High Filter: no
    • Low Filter (Subsonic): yes, 17 Hz (12 db/oct.)
    • Mute: no
    • Direct/Line-Straight: yes

Remarks[edit]




Pictures[edit]

  • Excerpt from Test: Denon PMA-860, Dual CV-5670, Pioneer A-656 II, Sony TA-F 550 ES

Denon PMA-860-Test-1990.jpg


Reports[edit]

  • Report in "FonoForum" 7 / 1991


  • External differences to the A-656: smaller knobs replaced by cylindrical versions resembling the large knobs.
  • Golden dot only on the volume potentiometer.
  • Inside: still horizontal circuit boards, but already no honeycomb housing around the volume potentiometer at the back right of the unit anymore


Left[edit]

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