You're best bet is a linear PSU as these don't chuck out spurious stuff unlike SMPS which is what the Caiman PSU happens to be even if it is a reasonable one.
There are a shed load of threads on here about power supplies
All I can suggest is you look for a linear PSU with the lowest output impedance you can find. A laboratory type would suffice, though I'm sure there are others as good but cheaper.
Apologies as I haven't looked myself as I haven't had to go there