Difference between revisions of "Pioneer A-757 MK II"

 
 
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Auftrennbare Vor- und Endstufe
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__NOTOC__
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== Short description ==
 +
External differences from the A-757: smaller knobs replaced by cylindrical versions resembling the large knobs. Golden dot ''only'' on the volume pot. Inside: still horizontal circuit boards, but already no honeycomb housing around the volume pot at the back right of the unit. No copper bottom anymore!
 +
== Data ==
 +
{{navigation}}
 +
'''General'''
 +
* Manufacturer: [[Pioneer]]
 +
* Model: A-757 MK II
 +
* Type: Integrated amplifier
 +
* Years of manufacture: 1990 - 1991
 +
* Made in: Japan
 +
* Color: Black
 +
* Remote control: No
 +
* Power consumption: 820 W (max)
 +
* Dimensions: 420 x 435 x 162 mm (WxDxH)
 +
* Weight: 19,5 kg
 +
* Original price approx.: 1'000 DM
  
die Standardbrücken habe ich durch " Van den Hul " Silver Bridge Brücken ersetzt.
 
Dadurch wurde der ohnehin  gute Klang noch deutlich verbessert.
 
  
 +
'''Connections'''
 +
* Number of inputs: 8
 +
** DAT /TAPE 1, TAPE 2, ADAPTER1/ TAPE3, ADAPTER 2, CD (gold plated), TUNER, LINE, PHONO (gold plated)
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* Number of outputs: 2
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** TAPE 1/CD-R/MD, TAPE 2 MONITOR
  
Technische Daten
 
  
- Eingänge : 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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'''Specifications'''
- Vergoldete Anschlussbuchsen für Phono und CD
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* Continuous power (at distortion)
- auftrennbare Vor- und Endstufe
+
** 8 Ohm: 2x 95 W / 0,003%
- Anschlüsse für 2 Lautsprecherpaare A+ B
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** 4 Ohm: 2x 140 W
- Regler für: Lautstärke, Bässe, Höhen, Balance
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2 Ohm: 2x 200 W
- Loudness- Taste, Subsonic- Taste, Muting- Taste
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* Dynamic power
- Line Direct- Schalter : Über brücken der Klangregelstufe für maximale Klangtreue
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** 8 Ohm: 2x 150 W
- DIn- Sinusleistung: 150 W + 150 W, Dynamische Ausgangsleistung: 250 W + 250 W
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** 4 Ohm: 2x 200 W
- Gesamtklirrfaktor. 0,003%
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** 2 Ohm: 2x 300 W
- Frequenzgang. 1- 150000 Hz 0 dB- 3 dB
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* Total harmonic distortion: 0.003% (20Hz - 20 kHz, 95W, 8 Ohm)
- Geräuschspannungsabstand: 108 dB
+
* Frequency response: 1 Hz - 150 kHz 0 dB- 3 dB
- Leistungsaufnahme : max 820 W
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* Signal-to-noise ratio: 108 dB
- Abmessungen BxHxT: 420x162x435 mm
 
- Gewicht. 19 Kg
 
  
  
2 Netztrafos und Elkos so groß wie Cola-Dosen. Räumlich getrennte Stufen: Verringerte Interferenzen.
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'''Special Features'''
Hohe Stabilität auch an niedrigen Impedanzen. Verkürzte Signalwege für denkbar sauberen Klang.
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* Recording selector switch
Resonanzdämpfende Konstruktion: Wabenförmig verstärkte Zarge, Kühlkörper und Dämpfer zur Unterbindung von Mikrofonie- Effekten.
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* Speaker pairs and headphones are switched via relays
Leistungsstarkes, niedrigimpedantes Netzteil: 2 Netztransformatoren und gerippte massive Gußgehäuse sichern eine hohe Kapazität,
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* Metal front panel
gute Resonanzdämpfung und saubere magnetische Abschirmung.
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* Direct - switch to bypass the tone control stage
" Non- Switching" Typ III: Wegfall der Schaltverzerrungen und verbesserte Stabilität an niedrigen Impedanzen
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* Phono - input with choice of MM/MM subsonic filter/MC/MC subsonic filter
8 Anschlußmöglichkeiten u. a. für 3 Bandgeräte und 1 Klangprozessor (Equalizer, Hallverstärker etc. )
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* switchable phono preamplifier
Phono-Entzerrer ( abschaltbar) mit hohem Verstärkungsfaktor. Geeignet für MM- MC Systeme
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* Separable pre- and power amplifier
 +
* connections for 2 speaker pairs A+B
 +
* shortened signal paths for the cleanest sound imaginable
 +
* spatially separated stages: Reduced interference
 +
* resonance-damping design: honeycomb-reinforced frame, heat sink and dampers to eliminate microphonic effects
 +
* powerful, low-impedance power supply: 2 power transformers and finned solid cast enclosure ensure high capacitance
 +
* good resonance damping and clean magnetic shielding
 +
* "Non-Switching" Type III: elimination of switching distortion and improved stability at low impedances
 +
* phono equalizer (can be switched off) with high gain; suitable for MM and MC systems
 +
 
 +
 
 +
== Remarks ==
 +
* Previous model:
 +
* [[Pioneer A-757]]
 +
 
 +
 
 +
* Successor model:
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* [[Pioneer A-777]]
 +
 
 +
 
 +
* 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 ==
 +
*[[Picture: Pioneer A-757 MK II
 +
[[File:Pioneer A-757 Mark II.jpg]]
 +
 
 +
 
 +
== Reviews ==
 +
 
 +
== Links ==
 +
 
 +
 
 +
[[Category:Integrated amplifier]]

Latest revision as of 00:49, 8 April 2021

Short description[edit]

External differences from the A-757: smaller knobs replaced by cylindrical versions resembling the large knobs. Golden dot only on the volume pot. Inside: still horizontal circuit boards, but already no honeycomb housing around the volume pot at the back right of the unit. No copper bottom anymore!

Data[edit]

General

  • Manufacturer: Pioneer
  • Model: A-757 MK II
  • Type: Integrated amplifier
  • Years of manufacture: 1990 - 1991
  • Made in: Japan
  • Color: Black
  • Remote control: No
  • Power consumption: 820 W (max)
  • Dimensions: 420 x 435 x 162 mm (WxDxH)
  • Weight: 19,5 kg
  • Original price approx.: 1'000 DM


Connections

  • Number of inputs: 8
    • DAT /TAPE 1, TAPE 2, ADAPTER1/ TAPE3, ADAPTER 2, CD (gold plated), TUNER, LINE, PHONO (gold plated)
  • Number of outputs: 2
    • TAPE 1/CD-R/MD, TAPE 2 MONITOR


Specifications

  • Continuous power (at distortion)
    • 8 Ohm: 2x 95 W / 0,003%
    • 4 Ohm: 2x 140 W

2 Ohm: 2x 200 W

  • Dynamic power
    • 8 Ohm: 2x 150 W
    • 4 Ohm: 2x 200 W
    • 2 Ohm: 2x 300 W
  • Total harmonic distortion: 0.003% (20Hz - 20 kHz, 95W, 8 Ohm)
  • Frequency response: 1 Hz - 150 kHz 0 dB- 3 dB
  • Signal-to-noise ratio: 108 dB


Special Features

  • Recording selector switch
  • Speaker pairs and headphones are switched via relays
  • Metal front panel
  • Direct - switch to bypass the tone control stage
  • Phono - input with choice of MM/MM subsonic filter/MC/MC subsonic filter
  • switchable phono preamplifier
  • Separable pre- and power amplifier
  • connections for 2 speaker pairs A+B
  • shortened signal paths for the cleanest sound imaginable
  • spatially separated stages: Reduced interference
  • resonance-damping design: honeycomb-reinforced frame, heat sink and dampers to eliminate microphonic effects
  • powerful, low-impedance power supply: 2 power transformers and finned solid cast enclosure ensure high capacitance
  • good resonance damping and clean magnetic shielding
  • "Non-Switching" Type III: elimination of switching distortion and improved stability at low impedances
  • phono equalizer (can be switched off) with high gain; suitable for MM and MC systems


Remarks[edit]




Pictures[edit]

  • [[Picture: Pioneer A-757 MK II

Pioneer A-757 Mark II.jpg


Reviews[edit]

Links[edit]