That's a good question... I'm not sure how much those bypass caps influence the sound, and I haven't experimented with mine, but I did upgrade to Jupiters in the signal path... (they aren't recommended for use as bypass caps). I might guess that a nice upgrade would be to replace the electrolytics with Solens or similar, and I don't think you would bypass them...(?) If you try something different report back - I'm interested...