Editing Pioneer A-445

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'''Marke''' : [[Pioneer]]
== Data ==
 
{{navigation}}
 
'''General'''
 
* Manufacturer: [[Pioneer]]
 
* Model: A-445
 
* Type: Integrated amplifier
 
* Years of manufacture: 1989 - 1990
 
* Made in: Japan
 
* Colors: Black, Silver A-445-S
 
* Remote control: no
 
* Power consumption: 550 W
 
* Dimensions (WxHxD): 420 x 123 x 330 mm
 
* Weight: 8 kg
 
* Original price approx.: 500 DM
 
  
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'''Modell''' : A-445
  
'''Technical Data'''
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== Technische Daten ==
* Continuous power (with distortion factor)
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*Ausgangsleistung: 2 x 100 W
** 8 Ohm: 2 x 60 W / 0,009% * 4 Ohm: 2 x 80 W / 0,009
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*Leistungsaufnahme: bis 550 W (220 Volt 50/60 Hz )
4 Ohm: 2 x 80 W  
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*Gesamtklirrfaktor: 0,008 %
* Dynamic power
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*Geräuschspannungsabstand: 107 dB
** 8 Ohm: 75 W
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*Eingänge:
** 4 Ohm: 110 W
 
* Frequency response:
 
** PHONO (MM) 20 HZ to 20kHz ± 0.3 dB
 
PHONO (MC) 20 HZ to 20kHz ± 0.5 dB
 
*Total harmonic distortion: 0.008 %
 
*Noise floor: 107 dB
 
*Inputs:
 
 
**PHONO (MC/MM)
 
**PHONO (MC/MM)
 
**TUNER
 
**TUNER
 
**CD
 
**CD
 
**Line/AUX
 
**Line/AUX
2x TAPE/MD/DAT
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**2x TAPE/MD/DAT
*Separable pre- and power amplifier (IN-OUT/PRE-OUT)
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*Auftrennbare Vor- und Endstufe (IN-OUT/PRE-OUT)
*Connections for 2 speaker pairs A + B individually switchable
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*Anschlüsse für 2 Lautsprecherpaare A + B einzeln schaltbar
*Controls:
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*Regler:
**Volume
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**Lautstärke
balance
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**Balance
Bass
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**Bässe
treble
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**Höhen
*Muting button
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*Muting-Taste
*Loudness button
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*Loudness-Taste
*Subsonic button
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*Subsonic-Taste
*Line Direct switch
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*Line Direct-Schalter
 
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*Maße (B x H x T): 42 x 12,3 x 33 cm
 
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*Gewicht: 8 kg
'''Special Features'''
 
*Super Linear Circuit (SLC): by cancelling the non-linearity of one component with the complementary non-linearity of the other, the lowest possible distortion, higher stability and flat frequency response are achieved. Overall, better sound reproduction is achieved thanks to the excellent open-loop frequency response.
 
*Six-position recording selector switch.
 
*Honeycomb-ribbed chassis, honeycomb-structured heat sink and honeycomb damper feet to protect against resonance and microphonic effects.
 
*Digital sound quality even at low impedances: High stability to impedance curve fluctuations.
 
*"Non-Switching" Type II: Amplification without switching distortion; improved thermal stability and high linearity for natural sound.
 
*Direct Connection: Signal reaches the output via the shortest possible path, contributing to sound purity.
 
*Clean Ground System: Ground side free of leakage components due to chassis isolated from transformers and heat sinks.
 
*DIRECT switch: For direct connection to the volume control.
 
*Outputs for two pairs of speakers: Choice of separate or common operation.
 
*High-gain phono equalizer amplifier.
 
 
 
 
 
== Remarks ==
 
* Previous model:
 
* [[Pioneer A-443]]
 
 
 
 
 
* Successor model:
 
* [[Pioneer A-447]]
 
 
 
* Other models in the same series:
 
*[[Pioneer A-225]]
 
*[[Pioneer A-335]]
 
*[[Pioneer A-445]]
 
*[[Pioneer A-656]]
 
*[[Pioneer A-757]]
 
*[[Pioneer A-858]]
 
 
 
 
 
== Pictures ==
 
*[[Picture: Pioneer A-445
 
[[File:Pioneer A-445.jpg]]
 
  
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== Bemerkungen ==
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*Super Linear Circuit (SLC): Duch Aufhebung der Nichtlinearität des einen Bauteils durch die komplementären Nichtlinearität des anderen werden geringstmögliche Verzerrungen, eine höhere Stabilität und ein flacher Frequenzgang erzielt. Insgesamt wird dank des ausgezeichenten Open-Loop-Frequenzgangs eine bessere Klangwiedergabe erzielt.
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*Aufnahme-Wahlschalter mit sechs Positionen.
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*Wabenrippenverstärktes Chassis, wabenstrukturierter Kühlkörper und Waben-Dämpferfüße zum Schutz von Resonanzen und Mikrofonie-Effekten.
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*Digitalgerechte Klangqualität auch an niedrigen Impedanzen: Hohe Stabilität gegenüber den Schwankungen der Impedanzkurve.
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*"Non-Switching" Typ II: Verstärkung ohne Schaltverzerrungen; verbesserte thermische Stabilität und hohe Linearität für natürlichen Klang.
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*Direct Connection: Das Signal erreicht den Ausgang auf dem kürzesten Weg und trägt damit zur Klangreinheit bei.
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*Clean-Ground-System: Von Sickerkomponenten freie Masseseite durch gegen Transformatoren und Kühlkörper isoliertes Chassis.
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*DIRECT-Schalter: Für direktes Durchstellen an die Lautstärkeregelung.
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*Ausgänge für zwei Lautsprecherpaare: Wahlweise getrennter oder gemeinsamer Betrieb.
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*High-Gain-Phono-Entzerrerverstärker
  
== Test reports ==
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Weitere Modelle der gleichen Serie:
* Report in "FonoForum" 12 / 1989
 
  
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== Bilder ==
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[[Datei:Pioneer A-445.jpg]]
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== Testberichte ==
  
 
== Links ==
 
== Links ==
  
 
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[[Kategorie:Vollverstärker]]
[[Category:Integrated amplifier]]
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