Modjeski designed, made, and sold modestly-priced speaker cables (he stopped including a power cord with his amps, saying everyone already has a spare computer cord that would do the job ;-) , and Keith Herron makes interconnects. I'm going to go out on a limb and guess nether are directional. Yet both somehow managed to make superior sounding electronics. Thank God for good ol' blind luck.
@tomic601, maybe on my next trip down to SoCal I'll stop by Vandersteen's place (it's not far off I-5) and give his new stuff a listen. I spent an interesting evening at CES drinking the expensive wine Richard bought for the dinner part (he, Brooks & Sheila Berdan, myself & my woman, another couple), eating Filet Mignon while listening to Richard and Brooks talk shop.
I had been planning to go to Modjeski's new place in Berkeley/Oakland and listen to his direct-drive ESL's (OTL amp driving the stators directly---no step-up transformer), but that's no longer possible. Bummer.