I first reported on my experimentation with and very positive results from the Groundmaster City devices on this forum in December 2021, with subsequent posts into the Spring of 2022. Started off with one for signal grounding of my amp and player, and one for chassis grounding my power supply and conditioner. After being advised (prior to Routemaster's release) by the folks at Verdant Audio (where I bought them) to keep amp and digital components on separate devices, and hearing no incremental benefit from chassis grounding, I switched to using one for the Pathos TT and one for the SACD player. I added the third Groundmaster City when I upgraded to the latest version of the Bybee Wire Stealth power conditioner which unlike previous versions had a ground connection. As I reported in my earlier posts I ordered Russ Andrews Kimber based grounding cables with the appropriate connectors, which seem to have a slight performance advantage over the stock Puritan wire. Still very pleased with their performance.In case they don't improve anything... Plus, another reason to go retail and for the Routemaster is being able to choose among the six types of connectors, e.g., spade.
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