What do you consider to be a narrow filter as it measures at -6dB

What do you consider to be a Normal filter as it measures at -6dB

What do you consider to be a wide filter as it measures at -6dB

Do you prefer a tube FM tuner or a SS FM tuner for your listening pleasure?                    Power supplies excluded for "integrated" pieces. A good video to watch on this very subject. https://ww

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