Did the A/B. Only once. I'm not sure if it's better or not. I know the music sounds good when they are in, so I will go with that.
I got them for speech recognition in noisy environments. Haven't really tested that yet.
Anyway, its nice to be listening to my BH gear, which thankfully is still working. I think the only problems I've ever had is trying to run delicate tubes.
Anybody listen to Mandolin Orange? Find it on Tidal HIFI.