I'm sure this is the "wrong way" to do this, but I'd appreciate an answer to my question (you can also tell me this is the wrong way) -- advance apologies. We have a few speakers on an old amplifier in the rack that are fed from a very old system that we don't really want to monkey with (and only has a few inputs, but many outputs). On occasion, we need to mute the signal to these speakers for just a few minutes (it's probably best not to explain why). The current solution is to send someone to power the amp off and back on, but obviously this is silly. Since it is a line level signal (over XLR) that feeds the amp, I'm wondering if there is a device that could be used to just mute this temporarily (obviously, without making a loud pop). Suggestions? I came across this device, but have no experience with it: https://www.rdlnet.com/product.php?page=153