Difference between revisions of "Esoteric Audio Research E.A.R. 509"

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== Allgemeines ==
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== General ==
1977 entsteht Esoteric Audio Research Ltd., kurz EAR. Sein Erstling, der 100-Watt-Monoblock 509, weist als Besonderheit die exklusive „Schnittstelle“ zwischen Ausgangsübertrager und Endröhre auf, den „balanced bridging mode“. Dass seine Konstruktionen ohne Feedback auskommen, ist ein weiteres Merkmal der Paravicini-Entwicklungen. Die 509 beweist, dass Röhren in jeder Beziehung den Transistoren die Stirn bieten konnten. Im Labor zeigten sie Messwerte – z.B. eine Bandbreite von 9 bis 85'000 Hz (-3 dB) –, die völlig jenseits des Retro-Sounds lagen.
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1977 Esoteric Audio Research Ltd., short EAR, was founded. His first product, the 100 watt monoblock 509, has as a special feature the exclusive "interface" between output transformer and power tube, the "balanced bridging mode". The fact that his designs do not require feedback is another characteristic of Paravicini's developments. The 509 proves that tubes could stand up to transistors in every respect. In the lab they showed measured values - e.g. a bandwidth of 9 to 85'000 Hz (-3 dB) - that were completely beyond retro sound.
  
Die Profiendstufen 509 wurde immer wieder als Vergleichsreferenz in Fachzeitschriften herangezogen , um die Qualitäten von Top-Anlagen zu testen. Dass die 509 in allen diesen Vergleichen als Siegerin hervorging, erklärt, weshalb diese Endstufe noch heute gebaut wird.  
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The 509 professional power amplifier was repeatedly used as a comparison reference in specialist magazines to test the qualities of top systems. The fact that the 509 emerged as the winner in all these comparisons explains why this power amplifier is still being built today.  
  
== Daten ==
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== Data ==
'''Allgemein'''
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'''General'''
* Hersteller:[[Esoteric Audio Research]]
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* Manufacturer: [[Esoteric Audio Research]]
* Modell: 509
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* Model: 509
* Baujahre:
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* Years of manufacture:
* Hergestellt in:
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* Made in:
* Farbe:
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* Color:
* Abmessungen:12"(30cm)W10"(25.4cm)D 6"(15cm)H
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* Dimensions:12"(30cm)W10"(25.4cm)D 6"(15cm)H
* Gewicht:18kg  
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* Weight:18kg  
* Neupreis ca.:9.867 €
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* Original price approx.:9.867 €
 
 
  
  
'''Anschlüsse'''
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'''Connections'''
* hier die Anschlussmöglichkeiten aufführen, falls bekannt.  
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* list here the connection options, if known.  
  
'''Technische Daten'''
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'''Specifications'''
*'''Ausgangsleistung:''' (20Hz-20kHz <0,25% in bewerten Load THD) 100W
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*'''Output power:''' (20Hz-20kHz &lt;0,25% in evaluate load THD) 100W
*'''Frequenzgang:''' 8Hz-30kHz +0-1 dB
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*'''Frequency response:''' 8Hz-30kHz +0-1 dB
*'''Frequenzgang:''' 3 Hz-80KHz + 0,3 dB
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*'''Frequency Response:'' 3 Hz-80KHz + 0.3 dB
*'''Power Bandwidth:''' -3dB, 0,5% THD 12Hz-60kHz
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*'''Power Bandwidth:'' -3dB, 0.5% THD 12Hz-60kHz
*'''I.M.D.:''' auf jeder Ebene von 100mW-100W gleicher Leistung <0,2%
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*'''I.M.D.:''' at any level from 100mW-100W of equal power &lt;0.2%.
*'''Ausgang Dämpfungsfaktor:''' (0.4ohm + 4UH) 20
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*'''Output Attenuation Factor:'' (0.4ohm + 4UH) 20
*'''Signal to Noise Ratio:''' von 100W bis 96dB
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*'''Signal to Noise Ratio:'' from 100W to 96dB
*'''Eingangsempfindlichkeit (asymmetrisch):''' 1,2
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*'''Input sensitivity (unbalanced):'' 1.2
*'''Eingangsimpedanz (asymmetrisch):''' 25kOhm
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*'''Input impedance (unbalanced):'' 25kOhm
*'''Stromverbrauch:''' 180V.A.
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*'''Power consumption:''' 180V.A.
  
'''Besondere Ausstattungen'''
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'''Special Features'''
* hier, wenn vorhanden
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* here, if available
  
  
== Bemerkungen ==
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== Remarks ==
Weitere Modelle der gleichen Serie:
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Other models of the same series:
  
== Bilder ==
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== Pictures ==
 
http://i.audioscope.net/ear1.jpg
 
http://i.audioscope.net/ear1.jpg
 
{{Audioscope}}
 
{{Audioscope}}
== Testberichte ==
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== Reviews ==
  
 
== Links ==
 
== Links ==
  
 
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[[Category:Power Amplifiers]]
[[Kategorie:Vintage]]
 
[[Kategorie:Endstufen]]
 

Latest revision as of 14:49, 14 December 2014

General[edit]

1977 Esoteric Audio Research Ltd., short EAR, was founded. His first product, the 100 watt monoblock 509, has as a special feature the exclusive "interface" between output transformer and power tube, the "balanced bridging mode". The fact that his designs do not require feedback is another characteristic of Paravicini's developments. The 509 proves that tubes could stand up to transistors in every respect. In the lab they showed measured values - e.g. a bandwidth of 9 to 85'000 Hz (-3 dB) - that were completely beyond retro sound.

The 509 professional power amplifier was repeatedly used as a comparison reference in specialist magazines to test the qualities of top systems. The fact that the 509 emerged as the winner in all these comparisons explains why this power amplifier is still being built today.

Data[edit]

General

  • Manufacturer: Esoteric Audio Research
  • Model: 509
  • Years of manufacture:
  • Made in:
  • Color:
  • Dimensions:12"(30cm)W10"(25.4cm)D 6"(15cm)H
  • Weight:18kg
  • Original price approx.:9.867 €


Connections

  • list here the connection options, if known.

Specifications

  • Output power: (20Hz-20kHz <0,25% in evaluate load THD) 100W
  • Frequency response: 8Hz-30kHz +0-1 dB
  • 'Frequency Response: 3 Hz-80KHz + 0.3 dB
  • 'Power Bandwidth: -3dB, 0.5% THD 12Hz-60kHz
  • I.M.D.: at any level from 100mW-100W of equal power <0.2%.
  • 'Output Attenuation Factor: (0.4ohm + 4UH) 20
  • 'Signal to Noise Ratio: from 100W to 96dB
  • 'Input sensitivity (unbalanced): 1.2
  • 'Input impedance (unbalanced): 25kOhm
  • Power consumption: 180V.A.

Special Features

  • here, if available


Remarks[edit]

Other models of the same series:

Pictures[edit]

ear1.jpg

Courtesy of audioScope. A use of the pictures by third parties, e.g. in forums or on eBay is not permitted!

Reviews[edit]

Links[edit]