Excellent Musical Fidelity amplifier

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By older Musical Fidelity amplifiers I have often observed that devices of the same type sound very different (e.g. different values of the quiescent current or different brands of capacitors in the power supply).
For me the best of the amps are the A1 and their familiar models, which Mr Tim de Paravicini has designed, see http://www.ear-yoshino.com/tim_bio.html
circuit describtions and service advices you find about
http://www.mhennessy1.f9.co.uk/mf_a1/index.htm
 
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