Puritan Audio Labs GroundMaster CITY & RouteMaster grounding system

My review on the Puritan Audio Labs GroundMaster CITY and RouteMaster grounding system has just gone up on the Stereo Times website. For all the details how this complete system for less then a $1000 can dramatically improve your system, take a look at the review. This grounding system is one of the greatest bargains in HiFi. Nordost makes a star grounding device that is no better in its influence on a system, quite good indeed, but charges over $5000, compared to the Puritan Audio Labs system's reasonable pricing.


Terry London/Teajay

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A couple months ago I inserted the GroundMaster CITY into my main system and would like to share my thoughts. I have a PSM156 so this was an inexpensive and easy upgrade.  I wasn’t expecting much but boy was I surprised!  It’s very easy to test - just unplug the cable from the port on the PSM156 and listen.  What I (and my wife who could care less about it) noticed, was an immediate bump in clarity.  The music got slightly louder with increased clarity, tighter bass and better space.  At $250 this is probably the best bang for the dollar upgrade I have ever made.  Considering I have a dedicated circuit, quality PCs and a PSM156, it was hard to believe that there was still that much noise on my lines. 

I was so impressed I immediately ordered the GroundMaster CITY and RouteMaster to ground my signal-based components.  I plugged the RouteMaster cables into my DAC, pre and amp.  The result?  Nothing.  I could not hear any discernible difference.  I tried the RouteMaster with and without the PSM156 connected to the GroundMaster CITY.  There may have been a very slight uptick in SQ when the PSM156 was disconnected from the GroundMaster CITY but it wasn’t consistent.

Maybe I need a more resolving system for the GroundMaster CITY/RouteMaster combo to make a difference?  Or maybe draining the noise from the mains filter takes care of 95% of the problem? There probably isn’t a lot of noise being generated by quality electronics downstream of the mains filter. However, if you don’t have a PSM156 with a convenient port to ground the chassis, maybe the GroundMaster CITY/RouteMaster combo is the next best thing?

I currently have the GroundMaster CITY/RouteMaster combo on my second system but it does not have enough resolution to show a difference.  I will probably be selling the  GroundMaster CITY/RouteMaster combo but will keep the GroundMaster CITY connected to my PSM156  forever.  As a matter of fact if I were to order a PSM156/136 in the future I would just add the GroundMaster CITY to the order up front.