If you have a set of these they work great with my Nox 600, you will have to get an adapter for the 1/8 jack on the Nox to accept the 1/4 male jack to the sending unit . Others have posted that you have to have a mono 1/8 to work but i had no problem with a stereo adapter, you just have to grind the end of the plastic down so it will go inside to make contact. With this done it shuts off the sound and works well with my gray ghost headphones also.
I found no lag as i used these with my 705 also, they are not full ear muffs but that is good in the hot summer weather here in California.
I found no lag as i used these with my 705 also, they are not full ear muffs but that is good in the hot summer weather here in California.