Brand new in box, never used! One Synergistic Research Active Ground Block SE. It is the current European 230 volts version with Atmosphere Active Ground Block power cable. The term “ground” refers to a connection to the earth, which acts as a reservoir of charge. The high-speed, SR Active Ground Block provides a conductive path for this ground, separate from the normal current-carrying path of your components, which under certain conditions can add up to 10 dB of noise if poorly designed! The ground path with the least resistance is the best path to Earth, and there is no better ground path for your components than the Active Ground Block. By cleaning up your system’s ground connection you hear a noticeable improvement in soundstage height, depth and width thanks to a lower noise floor. Soundstage scale is improved with richer tonal density especially at the edges of your sound field. Image outlines are brought into clearer focus while musicality and overall system refinement are greatly improved. Benefits include a noticeable increase in deep bass power and weight, a more holographic sound field, smoother high frequencies with greater extension and ‘air’, a more present and layered mid-range, increased tonal density with an apparent increase in resolution; it’s like going from a standard resolution Redbook file to Double DSD, the improvement is that dramatic. Nearly every aspect of system performance is transformed over the original. The difference between the new Active Ground Block SE and the original Ground Block is greater than the difference between the original Ground Block and no ground filter at all! The Active Ground Block SE is still factory sealed. The original box, manual and accessories are included. Retail price is 3.295 euro. Check our other listings for more interesting items. Free shipping worldwide!