The  Vahlbruch FX 6-PHI-4 is a high-end, hand-made, analog multi-stage phase shifter manufactured by a German builder on the rise. The circuit is the company's take on the classic JFET phasing effect and uses a matched set of 4 or even 6 new-old-stock 2N5952 transistors. Unlike the vintage unit that…Click on the title for more