They are pearl pcl-100 rack clamps they adjust to take a large range of diameter tube.
I bought mine from Thomann at around 12 Euros each.
Done quite a lot of work on the step by step config manual. Tested it out myself as I lost all my settings when I upgraded my firmware last week!
I'm on my holidays in sunny Florida at the moment, so I will post something in 2 weeks..
			
		


 Where are you Macca? I'm at the beach in St. Augustine right now. weather has been great!
  Where are you Macca? I'm at the beach in St. Augustine right now. weather has been great!

