I've had the Sirius adapter in my car for many years, the boom box too. I recently purchased another car kit for the AS. I haven't installed it yet but I was able to get it to work (had to tape the antenna to a window

) so I could hear it play through the Sony radio. It sounds pretty good. Looking forward to a permanent installation.
I'm fortunate that my son pays the Sirius bill for me. He has one in his car / boat and got the second subscription for a discount. He says it's my annual Father's Day gift that I can enjoy all year long.
I know you can get Sirius built in, but using just the head unit I can transfer from the boom box to the car to the AS. It's very handy
For a guy who used to listen to static filled, AM station rock 'n roll on a 7 transistor plastic radio, this technology blows my mind, but I like it. Then again, I'm still amazed by cordless phones.