Hi., I now got my soundcraft ghost 24 with mute automation. I think it was a pretty good deal at £750 ($1,200 US). BUT, it came with the old green power supply (PSM 300). After spending hours reading about ghost modifications, virtually everyone says that a better power supply will improve the sound and performance. The newer black powersupply CPS275 is almost as expensive as the desk I bought second hand!! I have read a lot of threads about alternative powersupplies but nowhere can i found a company (or individual) who sells them (I am in the UK) I have almost no electronics knowledge, so I am looking for a power supply that I can simply plug in. I would appreciate any guidance you can give me on this. Thanks!!