9U Power Supply Unit Bundles Doepfer PSU3 With Bus Boards – 9U Bundle £260.00 (£216.67 ex VAT) Mean Well Power and Doepfer A-100 Bus Board – 9U Bundle £172.00 (£143.33 ex VAT) Tiptop Audio Zeus Power Bundle – 9URated 5.00 out of 5 £470.00 (£391.67 ex VAT)