The suite of switches is optically isolated by the SFP optoelectronic converter module. ^^ High current low voltage drop rectifier bridge N filter capacitors, multi-stage filtering, lower ripple, clean sound. ^^ Multi-way power supply, to avoid interference. Multi-stage voltage regulators, cleaner power. Dual device design, internal cascade, one unit can be used as two. ^^ Pluggable SFP optical converter module to isolate network ripple An external 10MHz clock gives the cleaner sound and more analog sense. ^^ Customized C2 clock cables are available for better performance purchase separately Built-in linear power supply, audio specific transformer.