Integrated audio amps without feedback

akis · 11th May 2010, 02:25 PM

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 ?

circuitscc · 11th May 2010, 02:37 PM

Most op-amps use class B at the output. Most op-amps allow the gain to set externally.

Hope this helps.

11th May 2010, 02:25 PM	#1
akis diyAudio Member Join Date: Jul 2008	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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11th May 2010, 02:37 PM	#2
circuitscc diyAudio Member 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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