I am using one pair to Cyberlights to great effect. Since purchasing them several years ago my system is now fully balanced, except for my tuner and the ocassional need to replace my source with my single ended back up.
I also have the upgraded battery pack but haven't taken it out of the box. However the sonics are even better via the battery.
I also have the upgraded battery pack but haven't taken it out of the box. However the sonics are even better via the battery.