More parts... Have two Autocom Superpro AVI wired intercoms. I used these on the V-Star, now with the Trophy I'm using a BT headset since the stereo already has BT built in (and the audio quality is not as good with BT). The Superpro series also have headsets with ambient noise sensors, and adjust volume automatically based on background noise. VOX for intercom between rider and passenger is built in, and all volumes etc. can be individually adjusted. If you're after high quality sounds into your helmet, wired is the way to go. They don't need to be repaired, the batteries never run out, etc. Options for GPS input, music input, phone, and 2-way radio. Each has two headset leads, plus the 2-way radio lead installed. Each includes one headset and one extension. Also have lots of accessory wires - Kenwood radio wires (works on the TH-D7A and compatible), two TK-3300 radios with power packs (commercial-grade UHF 2-way radios, powered by the intercom), a few isolated input adapters (helps eliminate ground loop noise when both the intercom and audio source are bike-powered), and assorted other wiring bits. $50 each for the intercoms, willing to dicker if you want extra interface wires as well. Will post or e-mail pics if someone is interested.