Editing Pioneer A-656 MK II

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== Data ==
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Eccellente e grosso amplificatore integrato della prestigiosa serie REFERENCE STEREO AMPLIFIER tra i modelli di punta di casa Pioneer negli anni '90, modello A 656 MK II, l'ultima e più recente versione uscita, in (meno diffusa e più rara) versione color argento, molto bello ed elegantissimo, fratello dei celebri A 757 ed A 858, eccezionali amplificatori dalle prestazioni HI END che non avevano nulla da temere dalla concorrenza anche la più blasonata!! Costruzione robusta e grandi prestazioni, generoso dissipatore a nido d'ape in alluminio,Potenza DIN sui due canali 120 Watt su 4 Ohm; 80 Watt su 8 Ohm,quindi avrete tanta potenza disponibile e...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!!! Dimensioni L x P x H 420 x 435 x 162 mm. Suono tipico Pioneer, dinamico, aperto e limpido,molto apprezzato da sempre. Solo pochissimi segni e poco visibili e in maggior parte sul coperchio superiore, molto bello, come da foto, interno pulito e ordinato.
'''General'''
 
* Manufacturer: [[Pioneer]]
 
* Model: A-656 MK II
 
* Type: Integrated amplifier
 
* Years of manufacture: 1990 - 1992
 
* 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: approx. 14 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:
 
** 3x Tape Out (Cinch): 150 mV / 2,2 kOhm
 
** Headphones (6,3mm jack)
 
** 2 pairs of loudspeakers
 
 
 
 
 
'''Technical Data'''
 
* Continuous power (at distortion factor)
 
** 8 Ohm: 2x 80 W (0.005%)
 
** 4 Ohm: 2x 120 W (0.008%)
 
** 2 Ohm: 2x 160 W (0.008%)
 
* Dynamic power
 
** 8 Ohm: 2x 140 W
 
** 4 Ohm: 2x 200 W
 
** 2 Ohm: 2x 260 W
 
* total harmonic distortion: 0.008%
 
* Attenuation factor: 200 / 70 (8 Ohm, 1 kHz / 20 - 20 kHz)  
 
* Frequency response: 5 - 80,000 Hz (0.05%, 8 Ohm)
 
* Signal to noise ratio: 95dB / 77dB
 
* 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 ==
 
* Previous model:
 
* [[Pioneer A-656]]
 
 
 
 
 
* Successor model:
 
* [[Pioneer A-676]]
 
 
 
 
 
* Other models in the same series:
 
* [[Pioneer A-227]]
 
* [[Pioneer A-337]]
 
* [[Pioneer A-447]]
 
* [[Pioneer A-656 MK II]]
 
* [[Pioneer A-757 MK II]]
 
* [[Pioneer A-858]]
 
 
 
 
 
== Pictures ==
 
* Excerpt from Test: Denon PMA-860, Dual CV-5670, Pioneer A-656 II, Sony TA-F 550 ES
 
[[File:Denon PMA-860-Test-1990.jpg]]
 
 
 
 
 
== Reports ==
 
* 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 ==
 
 
 
 
 
[[Category:Integrated amplifier]]
 

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