BSS AR-133 - Active Direct Box / Line BalancerDurability and sound quality: the AR 133 direct box is without peer in both categories. The AR 133's metal casing could hold up under a buffalo stampede, and its strong rubber grips ensure it can't be kicked around easily. The sound is low impedance bliss clear, powerful and incredibly transparent. The AR 133 will be part of your gear for a long time to come. The AR 133 Active DI Box from BSS Audio uses an enhanced version of the same audio path as