ZU Birth comes to mind. I use one on an Odyssey amp in a tight place and hear no difference from a Harmonic Tech 9 that was on it in another setting.
Short runs of flexible power cord?
I just spent $ 200 (mostly for shipping) to have my Jolida 302B repaired: the IEC was damaged due to the torque from the heavy Transparent power cord. It's admittedly too long but also incredibly stiff. I could really use some help here. Are there companies that make flexible power cables in shorter (less than 1 M) runs, that sound good??????