For sale is my Entreq Silver Tellus ground box. Included is an Entreq Eartha Infinity Cupper ground cable with hook terminations. Use it as a chassis or signal ground to lower the noise floor of your Hi-Fi system by connecting your components to a dedicated, shared earth. My experience with Entreq units is that they work well, but less is more. Usually you dont want to use multiple ground cables per component. Prioritize chassis grounds over signal grounds. Only ground your signals if the impedance measured between the ground pin on the IEC and the negative input that youre considering grounding is > 1 Ohm. Do not connect your AC ground to this unit if youre also connecting your chassis/signal grounds. Only use with components that are grounded by design - meaning that it either has a signal ground binding post or it has a three prong IEC inlet. If it only has a two prong IEC and no dedicated binding post, you should not ground the component. Do not use this unit to ground the negative outputs of your amplifier (use separate boxes for each channel in this configuration).