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Old 11th May 2010, 02:25 PM   #1
akis is offline akis  United Kingdom
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Join Date: Jul 2008
Default Integrated audio amps without feedback

Is there an op-amp on low frequencies (audio) that only uses pure class A everywhere and does not use negative feedback across multiple internal stages or feedback based on capacitance (eg from collector to base) ? But which somehow allows the gain to be set externally ?
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Old 11th May 2010, 02:37 PM   #2
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Join Date: Sep 2005
Most op-amps use class B at the output. Most op-amps allow the gain to set externally.

Hope this helps.
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