Hello,
I have used a Tice power-block { larger old unit but works perfect } to feed my tube mono blocks, preamp, etc. for many years. Being an electrical engineer I can tell you that there is measurable noise on just about any AC line.
If you want to save the money, you can go with a surge-suppressor AC outlet { amazon } or at least a decent power strip with one in it.
I have used a Tice power-block { larger old unit but works perfect } to feed my tube mono blocks, preamp, etc. for many years. Being an electrical engineer I can tell you that there is measurable noise on just about any AC line.
If you want to save the money, you can go with a surge-suppressor AC outlet { amazon } or at least a decent power strip with one in it.