I was looking to add a volume control for a set of outdoor speakers and was ready to buy a Russound ALTX-2D Autoformer volume control and weatherproof cover from htp://futurehomesystems.com. While I was searching for pricing I found another company, Knoll Systems (http://www.knollsystems.com/whitepap.htm),that manufacture a volume control that uses a V-Pad transformerless design. This type of design is not supposed to generate the heat of a transformer or L-pad design while also giving a linear frequency response. It is also quite a bit smaller than the Russound making it easier to install. Does anyone have any experience with this type of volume control and if it is indeed a better method of controlling volume? Thanks!