i have never found a use for subcards - i used a pair of the DPA 4015s for a while, and found them to have weird imaging, and even a rather dullish sound compared to my DPA 4011s. i tried them in various config's, but just couldnt get to like them. one thing to be sure and try with the 414s, if you find yourself in a nice venue and farily close in, is blumlein pair - excellent! i always wonder how a pair of 414s would compare to a C426, since it uses the same capsules and probably most of the same electronics (but seems to cost quite a bit more...)