Difference between revisions of "Pioneer A-858"

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__NOTOC__
Technischen Daten 
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== Short description ==
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Amplifier derived from the A-757 (and thus from the A-717) with even larger transformers and even more power in an oversized cabinet, successor of the A-88X, very similar to the analog section of the A-90D/A-91D. However, only introduced at the same time as the A-757 and A-656, therefore smaller knobs already made of plastic and plugged instead of screwed.
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== Data ==
 +
{{navigation}}
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'''General'''
 +
* Manufacturer: [[Pioneer]]
 +
* Model: A-858
 +
* Type: Integrated amplifier
 +
* Years of manufacture: 1989 - 1991
 +
* Made in: Japan
 +
* Color: Black
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* Power consumption: 1000W (max)
 +
* Dimensions: 420 x 172 x 474 mm (WxHxD)
 +
* Weight: 24,5 kg
 +
* Original price approx.: 1'500 DM
  
glasklarer und dynamischer Klang
 
  
sehr aufwendige und solide Verarbeitung
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'''Connections'''
extrem hohe Ausgangsleistung (immense Stromfestigkeit)  
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* Number of inputs: 8
 +
** Phono
 +
** Tuner
 +
CD/DVD
 +
** Line/Aux
 +
** Tape-1/DAT
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** Tape-2
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** Tape-3
 +
** Adaptor In-Out / Pre-Out
 +
Number of outputs:
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** list the outputs here (with level/impedance).
  
ordentliches Subsonic-Filter
 
  
sehr gutes Rauschverhalten bei Hochpegel und Phono Eingangsteil
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'''Technical Data'''
 +
* Continuous power (with distortion factor)
 +
** 8 Ohm: 2 x 105 W / 0,03%
 +
** 4 Ohm: 2 x 160 W / 0,05%
 +
* Dynamic power
 +
** 4 Ohm: 2 x 230 W
 +
** 2 Ohm: 2 x 350 W
 +
* Total harmonic distortion: 0.03%
 +
* Attenuation factor 1kHz/20Hz ~ 20kHz, 8 Ohm: 200/70
 +
* Bandwidth power 0,05%, 8 Ohm: 5 - 60.000 Hz
 +
* Signal-to-noise ratio phono MM: 74dB
 +
* Signal-to-noise ratio CD, Tuner, Line, Tape: 92dB
 +
* Stereo channel separation:
 +
* Tone control:
 +
** Bass: +-8dB (100Hz)
 +
Treble: +-8dB (10kHz)
 +
* Loudness: Yes, Volume button -40dB position +5dB(100Hz) +3dB(10kHz).
 +
* High Filter:
 +
* Low Filter (Subsonic): Yes, key 17Hz (12db/oct.)
 +
* Mute: Yes, button
 +
* Direct/Line-Straight: Yes
  
geringes Übersprechen zwischen den Eingängen
 
  
sehr wirksame Loudness-Schaltung
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'''Special Features'''
2x120 Watt Sinus (8Ohm)
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* Elaborate and solid workmanship
 +
* Extremely high output power (immense current stability)
 +
* Adapter loop (through bridge plug on the back)
 +
* Direct switch: for direct connection to the volume control
 +
* Phono switch for MM and MC cartridges + subsonic
 +
* Transformers in solid cast housings to protect against resonance and magnetic interference
 +
* Honeycomb-ribbed chassis and honeycomb-structured heat sink (resonance and vibration damping)  
 +
* Robust power supply for stable supply during peak loads
 +
* Spatially separated stages, therefore elimination of mutual interference
 +
* Gold-plated connectors for phono and CD
  
2x180 Watt Sinus (4Ohm)
 
2x350 Watt (2Ohm) <0,1% Klirrfaktor
 
  
auftrennbare Vor- und Enstufe (durch Brückenstecker an der Rückseite)
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== Remarks ==
Anschlüsse für 2 Lautsprecherpaare (auch für dicke Querschnitte)
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* Previous model:
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* [[Pioneer A-88X]]
  
Direct Schalter: Für direktes Durchstellen an die Lautstärkereglung
 
  
Mute Schaltung
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* Successor model:
Phono Schalter für MM und MC Tonabnehmer + Subsonic
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* [[Pioneer A-878]]
  
Phono Vor-vorverstärker (zuschaltbar)
 
getrennte Spannungs- und Leistungsverstärkung
 
  
Transformatoren in massiven Gußgehäusen zum Schutz vor Resonanzen und magnetischer Interferenzen
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* Other models in the same series:
Wabenrippenverstärktes Chassis und wabenstrukturierter Kühlkörper (Resonanz und vibrationsdämpfend)
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*[[Pioneer A-227]]
 +
*[[Pioneer A-337]]
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*[[Pioneer A-447]]
 +
*[[Pioneer A-656 MK II]]
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*[[Pioneer A-757 MK II]]
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*[[Pioneer A-858]]
  
Robustes Netzteil für stabile Versorgung bei Lastspitzen
 
räumlich getrennte Stufen, daher Wegfall gegenseitiger Interferenzen
 
  
vergoldete Anschlußbuchsen für Phono und CD
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== Pictures ==
8 Anschlussmöglichkeiten ( Phono, Tuner, CD/DVD, Line/Aux, Tape/MD/Dat-1, Tape/MD/Dat-2, Tape/MD/Dat-3, Adaptor IN-OUT/Pre-out
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*[[Image: Pioneer A-858
 +
[[Image:Pioneer A858.jpg]]
  
Kopfhörer-Klinkenausgang an der Frontseite
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Abmessungen: 42cm x 17,2cm x 47,4cm (BxHxT)
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== Reports ==
Gewicht 24,5 KG
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 +
 
 +
== Links ==
 +
 
 +
 
 +
[[Category:Integrated amplifier]]

Latest revision as of 00:52, 8 April 2021

Short description[edit]

Amplifier derived from the A-757 (and thus from the A-717) with even larger transformers and even more power in an oversized cabinet, successor of the A-88X, very similar to the analog section of the A-90D/A-91D. However, only introduced at the same time as the A-757 and A-656, therefore smaller knobs already made of plastic and plugged instead of screwed.

Data[edit]

General

  • Manufacturer: Pioneer
  • Model: A-858
  • Type: Integrated amplifier
  • Years of manufacture: 1989 - 1991
  • Made in: Japan
  • Color: Black
  • Power consumption: 1000W (max)
  • Dimensions: 420 x 172 x 474 mm (WxHxD)
  • Weight: 24,5 kg
  • Original price approx.: 1'500 DM


Connections

  • Number of inputs: 8
    • Phono
    • Tuner

CD/DVD

    • Line/Aux
    • Tape-1/DAT
    • Tape-2
    • Tape-3
    • Adaptor In-Out / Pre-Out

Number of outputs:

    • list the outputs here (with level/impedance).


Technical Data

  • Continuous power (with distortion factor)
    • 8 Ohm: 2 x 105 W / 0,03%
    • 4 Ohm: 2 x 160 W / 0,05%
  • Dynamic power
    • 4 Ohm: 2 x 230 W
    • 2 Ohm: 2 x 350 W
  • Total harmonic distortion: 0.03%
  • Attenuation factor 1kHz/20Hz ~ 20kHz, 8 Ohm: 200/70
  • Bandwidth power 0,05%, 8 Ohm: 5 - 60.000 Hz
  • Signal-to-noise ratio phono MM: 74dB
  • Signal-to-noise ratio CD, Tuner, Line, Tape: 92dB
  • Stereo channel separation:
  • Tone control:
    • Bass: +-8dB (100Hz)

Treble: +-8dB (10kHz)

  • Loudness: Yes, Volume button -40dB position +5dB(100Hz) +3dB(10kHz).
  • High Filter:
  • Low Filter (Subsonic): Yes, key 17Hz (12db/oct.)
  • Mute: Yes, button
  • Direct/Line-Straight: Yes


Special Features

  • Elaborate and solid workmanship
  • Extremely high output power (immense current stability)
  • Adapter loop (through bridge plug on the back)
  • Direct switch: for direct connection to the volume control
  • Phono switch for MM and MC cartridges + subsonic
  • Transformers in solid cast housings to protect against resonance and magnetic interference
  • Honeycomb-ribbed chassis and honeycomb-structured heat sink (resonance and vibration damping)
  • Robust power supply for stable supply during peak loads
  • Spatially separated stages, therefore elimination of mutual interference
  • Gold-plated connectors for phono and CD


Remarks[edit]




Pictures[edit]

  • [[Image: Pioneer A-858

Pioneer A858.jpg


Reports[edit]

Links[edit]