Just a couple of comments re bypassing . I dont recomend bypassing in signal path unless its bypassing electrolytics such as the back to back type in many early cd players like the Marantz cd 94 etc ,and its not perfect but still an improvement over the inferior electrolytic on their own . , but you HAVE to use a .01 uf . It may be only one decimal point but will make the difference from being great to crap . .Miflex dont make a .01 uf unfortunately . In fact i did try their .02 uf cap as a bypass and that didn't sound right either .Thats how critical it can be . Secondly , many cheaper film caps can be a bit bright compared to a jupiter copper foil for example and could tilt the the upper frequencies up a bit .
Where bypassing works , is with electrolytics in power supplies . Only use a .01 uf copper foil like Duelund or Jupiter .. they have come down in price now so no one needs to use an inferior .01 uf cap .
If you are using a decent output cap no need to bypass in my opinion. . My vsf caps in the 94 mk2 are not bypassed .