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#1
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Tube sound notes for Arny, Bret
"Tube/transistor "HYBRID" amplifiers
Tubes are often used to impart characteristics that many people find audibly pleasant to solid state amplifiers, such as Musical Fidelity's use of Nuvistors, tiny triode tubes, to control large bi-polar transistors in their NuVista 300 power amp. In America, Moscode and Studio Electric use this method, but use MOSFET transistors for power, rather than bi-polar. Pathos, an Italian company, has developed an entire line of hybrid amplifiers. To demonstrate one aspect of this effect, one may use a light bulb in the feedback loop of an infinite gain multiple feedback (IGMF) circuit. The slow response of the light bulb's resistance (which varies according to temperature) can thus be used to moderate the sound and attain a tube-like "soft limiting" of the output, though other aspects of "the tube sound" would not be duplicated in this exercise." http://en.wikipedia.org/wiki/Tube_sound |
#2
Posted to rec.audio.opinion
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Tube sound notes for Arny, Bret
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#3
Posted to rec.audio.opinion
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Tube sound notes for Arny, Bret
Jenn:
"I once had a New York Audio Labs preamp and amp. Really nice sound. " But then it broke and no one else could fix it, right?? -- Message posted using http://www.talkaboutaudio.com/group/rec.audio.opinion/ More information at http://www.talkaboutaudio.com/faq.html |
#4
Posted to rec.audio.opinion
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Tube sound notes for Arny, Bret
In article
outaudio.com, "BretLudwig" wrote: Jenn: "I once had a New York Audio Labs preamp and amp. Really nice sound. " But then it broke and no one else could fix it, right?? Nope, worked fine. The power switch went bad, but I fixed that. Sold it later when I needed money. |
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