Bypassing any electrolytic with a .01uf is easily heard . Not only that the better the cap the better the result . I am speaking from extensive experience and my modifications to equipment has been very well recieved by audiophiles .
I have also run many experiments to ascertain how small a bypass can be heard .
I got down to 10 pf and could hear the effect . This is like one thousanth of a .01uf . I didnt like the result but the point was you could hear it . This was bypassing a 0.1uf film cap around a tda1541 dac chip.
A .01 uf is the only size to bypass with . Moving away smaller or larger results in subtle but less natural sound .
Quality is paramount and one of the reasons why bypassing is not always liked .
I now only bypass with a top copper foil like Jupiter . But the auricap .01 1500v is special too and yes the 1500v cap is better than the 600v auricap .dont ask why . I dont know .
I just finnished a Marantz cd94 mk2 for someone else and the result was amazing .Very close to my own machine . This was mostly due to extensive bypassing with the best caps available .
Unfortunately there is no free lunch and lower quality caps will not get you to nirvana .
If they did I would use them . I have tried lots .