at the time the rl-s came out, it's coil technology could only be done in single 3 ohm. it's the first production LMS driver available. you'll have to check out the SSA forum here. it's an 18, but i dunno what they are going to call it or if they are going to include it in the ICON line. wheeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee I think the rlps will only be getting better