Like I said... it's just what I've heard. Also, like I said, I haven't been able to work with them personally, yet... so I can't say for sure. If the EKTA mentions a unique part number for the boxes... and it's not the entire headunit... then that would be a more reliable resource than meVelvetFoot said:What makes you think there is no box. ETKA shows part numbers for the XM and Sirius boxes. No location though.