It's hardly conceivable that upgrading from the potentiometer/balance control to the coarse/fine stepped attenuator could make such a huge difference. I've only been listening for about half an hour since installing it, but my impressions are resoundingly positive. I'm cycling through some well-known acoustic and non-acoustic tracks and all I can say is, "Wow!" There is improved clarity and pitch definition. I plan to give a more critical listen tomorrow, but for now I can say without reservation that the TwoQuiet is worth every penny. Nice!
Joe.