Passive 1x4 selector, use to compare 4 preamps in the studio, XLR i/o
Passive 4x1 selector, use to compare 4 mics in the studio, XLR i/o
8 channel balanced line level splitter with Jensen transformers
Studio Monitor Controller
8 channel mic splitter, Jensen isolation transformers, D-subs & XLRs
Phase adjustment tool, class-A w/ 360 deg. range & low-pass filter