Giesemann Clock Sync Module - Impedance Matching DeviceGiesemann Clock Sync Module Impedance Matching Device This version is designed along with customer who is recently purchase the Gastard U18 DDC for his audiopile sysytem. Since U18 is requires a specific 50ohms impednace input to work. He contact AfterDark. and see if we have clocking solution which can provide the flexibility on working with the Giesemann Clock Sync Module (GCSM) special designed to work for the matching the impedance for Gustard