First, I was sent a free Cable+ Pro, full disclosure. This was my setup for testing: DAC: Audio GD Master 7 (2015 with DSP7 upgrade) AMP: Apex Sangaku Headphones: Focal Utopia I also had a the regular Cable+ to compare with the Cable+ Pro. Let me start with how this product helps regardless of sound technicalities. If you have a weak source, or an amp that needs a hot input source, either the Cable+ or the Cable+ Pro is the perfect cheap solution to fix this type of issue. It gives just a hair over double the voltage of the original input. That...

I'm going to be transparent, and say Burson gave me this for free. The product being Burson Cable+ ($150).     I'm going to give it 4/5 for it's intended purpose. This is strictly for low power devices (cell phone, tablet, PC 3.5mm out, etc..). In that specific sense, it is a good product.  Be aware, if you don't want it to sound like crap, you have to use a battery pack to power it (this conditions the power). Using the provided wall wart makes things muddy.   Even with battery pack, it does overall decrease fidelity, in high end systems...