For those of you who demand reviews and get off on rave reviews never fear, there is an extensive review of the Entreq Grounding boxes, which actually comprise many sizes and prices. Here's an excerpt from the Audio Beat review. Did someone say Avantgarde Trio? Lol

"Adding the Minimus/Eartha combination to the preamp created a huge lift in quality on this system -- an increase out of all proportion with the modest price of the Entreq products. Of course, the results will be system dependent, but I chose this system with some care. Using the Wadia S7i and the Avantgarde XA/Trio amplifier and speaker combination presents a system that is at once hyper-revealing of ground quality and grain in the signal (110dB sensitivity speakers will do that for you), but also a system that has already taken considerable steps to immunize itself from the impact of AC pollution and poor grounding. The preamp is entirely galvanically isolated by its battery supply, while the power amp is extremely well regulated and filtered. So by connecting a spare input socket on the preamp to the Minimus, I’m only impacting the common signal ground. Yet the results are exceptionally worthwhile and musically satisfying -- definitely food for thought in a general sense, a no-brainer as an audio upgrade."

The entire review can be viewed at,

http://www.theaudiobeat.com/equipment/entreq.htm

Tootles,

Geoff Kait
Machina Dynamica