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Excellent observations!

Detail level is the first to go with excess feedback. Instruments become "smooth" and clinical and ambience details more diffused.
Bandwidth increases with feedback, if it's not limited by a component "brick wall" limit.
Bass level sometimes depends on the output impedance, which drops when you increase the feedback level. In some cases I prefered the zero feedback bass, due to its precise tone and "definition". That was the case with a Dyna MkIII amp which I modified to zero-feedback with triode front-end and 6550 finals in triode mode. In that case the front-end circuit (not the final stage) was measued at 80 KHz bandwidth and the full amp extended beyond 20 KHz - without feedback!
I applied my simple rule, if it ain't broke I ain't gonna fixit!


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  • Excellent observations! - serus 08:29:01 09/19/04 (0)


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