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

 
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==Daten==
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== Short description ==
{{Navigation}}
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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!
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== 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
  
'''Allgemein'''
 
* Hersteller: [[Pioneer]]
 
* Modell: A-757 MK II
 
* Baujahre: 1990-
 
* Hergestellt in: Japan
 
* Typ: Vollverstärker
 
* Fernbedienung: Nein
 
* Leistungsaufnahme: 820 W (max)
 
* Abmessungen: 42 x 43,5 x 16,2 cm (B x T x H)
 
* Gewicht: 19,5 kg
 
* Farbe: schwarz
 
* Neupreis ca.: 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
  
'''Anschlüsse'''
 
* Anzahl der Eingänge: 8
 
** DAT /TAPE 1, TAPE 2,  ADAPTER1/ TAPE3,  ADAPTER 2, CD (vergoldet), TUNER, LINE, PHONO (vergoldet)
 
* Anzahl der Ausgänge: 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
  
'''Technische Daten'''
 
* Dauerleistung (bei Klirrfaktor)
 
** 8 Ohm: 2x 95 W (0,003%)
 
** 8 Ohm: 2x 100 W (1,0%, DIN)
 
** 4 Ohm: 2x 140 W (0,05%)
 
** 4 Ohm: 2x 150 W (1,0%, DIN)
 
* Dynamikleistung
 
** 8 Ohm:
 
** 4 Ohm: 2x 250 W
 
* Gesamtklirrfaktor: 0,003% (20Hz - 20 kHz, 95W, 8 Ohm)
 
* Frequenzgang: 1 Hz - 150 kHz 0 dB- 3 dB
 
* Geräuschspannungsabstand: 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
  
'''Besondere Ausstattungen'''
 
* Aufnahmewahlschalter
 
* Lautsprecherpaare und Kopfhörer werden über Relais geschaltet
 
* Metallfrontplatte
 
* Direct - Schalter zum Überbrücken der Klangregelstufe
 
* Phono - Eingang mit Wahlmöglichkeit MM/MM subsonic Filter/MC/MC subsonic Filter
 
* Abschaltbarer Phono-Vorverstärker
 
* auftrennbare Vor- und Endstufe
 
* Anschlüsse für 2 Lautsprecherpaare A+B
 
* verkürzte Signalwege für denkbar sauberen Klang
 
* räumlich getrennte Stufen: Verringerte Interferenzen
 
* resonanzdämpfende Konstruktion: Wabenförmig verstärkte Zarge, Kühlkörper und Dämpfer zur Unterbindung von Mikrofonie- Effekten
 
* leistungsstarkes, niedrigimpedantes Netzteil: 2 Netztransformatoren und gerippte massive Gußgehäuse sichern eine hohe Kapazität
 
* gute Resonanzdämpfung und saubere magnetische Abschirmung
 
* "Non-Switching" Typ III: Wegfall der Schaltverzerrungen und verbesserte Stabilität an niedrigen Impedanzen
 
* Phono-Entzerrer ( abschaltbar) mit hohem Verstärkungsfaktor; geeignet für MM- und MC-Systeme
 
  
==Bemerkungen==
+
== Remarks ==
Weitere Modelle der gleichen Serie
+
* Previous model:
* [[Pioneer A-616]]
 
* [[Pioneer A-616 MK II]]
 
* [[Pioneer A-656]]
 
* [[Pioneer A-656 MK II]]
 
* [[Pioneer A-676]]
 
* [[Pioneer A-701R]]
 
* [[Pioneer A-717]]
 
* [[Pioneer A-717 MK II]]
 
 
* [[Pioneer A-757]]
 
* [[Pioneer A-757]]
* [[Pioneer A-757 MK II]]
+
 
 +
 
 +
* Successor model:
 
* [[Pioneer A-777]]
 
* [[Pioneer A-777]]
* [[Pioneer A-838]]
+
 
* [[Pioneer A-858]]
+
 
* [[Pioneer A-878]]
+
* 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 23:49, 7 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]