This years shootout was about highly efficient speakers.
Here the contestants:
The contestants were all supported by the sub bass of the main system so they could fill the l,arfge room with sound.
In the first round pairs of contestants were listened to and the winner then went into the second round.
Source was a Revox R2R. Here some clips of the first rounds. Distortion in the audio is caused by overload of the mic.
Result of the first round:
The final round will be covered in an upcoming round