Here’s a pair of passive accessories from Mutant Modular with their 3 channel mixer and attenuator that both fit in line between your cables. These have been really handy! Having more mixing, attention (and VCAs!) around your modulation and audio is the key to unlocking a lot of what’s great about the modular format for me. The attenuator has been handy with recording gear, especially with other peoples systems at events when I need to just drop the level of something before it hits a camera or recorder.
More info – http://bit.ly/mutantmodular