Grannyring, I haven't experimented with Wimas. Back in the days when I had ARC preamps I listened to Wimas because they were used extensively in the ARC power supplies, but I wouldn't draw any conclusions from that----too many other variables.
On your comment about 2 camps of people----one appreciating bypass caps and the other disliking bypass caps---I agree completely. Some like 'em, some don't. I am in the Don't Like Them camp. Each time I try a bypass, I hear an emphasis in the highs, like a spotlight has been turned on. This accentuates treble speed, focus and apparent detail and there is more "air" in the mids and highs. These qualities seem---at first---like genuine improvements. Unfortunately, to my ears, they quickly become artificial and unmusical. The unbypassed cap also sounds more coherent; it doesn't change character across the tonal spectrum. The unbypassed cap sounds like one voice rather than a smeared chorus of different voices.
On your comment about 2 camps of people----one appreciating bypass caps and the other disliking bypass caps---I agree completely. Some like 'em, some don't. I am in the Don't Like Them camp. Each time I try a bypass, I hear an emphasis in the highs, like a spotlight has been turned on. This accentuates treble speed, focus and apparent detail and there is more "air" in the mids and highs. These qualities seem---at first---like genuine improvements. Unfortunately, to my ears, they quickly become artificial and unmusical. The unbypassed cap also sounds more coherent; it doesn't change character across the tonal spectrum. The unbypassed cap sounds like one voice rather than a smeared chorus of different voices.