The best PS to power Line 6 HX FX (you also need the adapters Cioks 8800 Parallel Adapter Flex and Cioks 3050 Flex Typ 3). The Line 6 HX FX is very power hungry and can draw up to 1.1A under heavy DSP usage. Most PSs have a max. of 500mA outputs, so there's the risk that using a current doubler isn't enough. In this case, the outputs are 660mA, so you're safe.
P.S. The HX Stomp draws is a bit less power hungry, drawing up to 900mA, so you're probably safe if you use a doubler on another PS's regular 500mA outputs.