Difference between revisions of "Musical Fidelity Power Amplifier"

 
 
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The A100:
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Released in 1986, the A100 (A100X) is a beefed up A1 in a slightly taller case producing 50 watts per channel. To achieve this, there's a bigger transformer giving higher supply rails. Musical Fidelity claim that it operates in class A 99% of the time, so by my reckoning, there's 1.75 amps of standing current per channel, resulting in around 160W of heat dissipation. To cope with this, there are two fans, which become noisy with age. When the bearings get tired, they slow down and the reduced airflow leads to reliability problems. Also, they suck dirt and dust through the case...
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* [[Musical Fidelity A1|A1]]
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* [[Musical Fidelity A1 David|A1 David]]
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* [[Musical Fidelity A1 David II|A1 David II]]
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* [[Musical Fidelity A1 Final Edition|A1 Final Edition]]
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* [[Musical Fidelity A100|A100]]
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* [[Musical Fidelity A1001|A1001]]
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* [[Musical Fidelity A2|A2]]
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* [[Musical Fidelity A200|A200]]
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* [[Musical Fidelity A220|A220]]
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* [[Musical Fidelity A3|A3]]
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* [[Musical Fidelity A3.2|A3.2]]
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* [[Musical Fidelity A3.5|A3.5]]
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* [[Musical Fidelity A300|A300]]
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* [[Musical Fidelity A308|A308]]
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* [[Musical Fidelity A5|A5]]
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* [[Musical Fidelity Nu-Vista M3|Nu-Vista M3]]
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* [[Musical Fidelity Tri-Vista 300|Tri-Vista 300]]
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* [[Musical Fidelity X-A2|X-A2]]
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* [[Musical Fidelity X-A100R|X-A100R]]
  
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The output transistors seem to be the same 2n3055/MJ2955 combination as used in the A1. I'm surprised at this frankly, and failures are all too common. All other comments about the A1 apply to this model, so check for noisy controls and dried up electrolytic capacitors...
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[[Category:Device database]]
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[[en:Musical Fidelity Integrated amplifier]]
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Something that amuses me - reviews often say that the phono stage was much-improved, but as far as I can tell, it's exactly the same as the A1!
 

Latest revision as of 06:40, 15 February 2009

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