So far all the Radiohead LPs I've gotten have been quiet.
In the CD world, those with analog master tapes are frequently reissues of older LPs. Older master tapes have degraded with time; its not that the original LPs covered up the hiss, the hiss was often simply not there. If you get a chance to play with a 1/2" format stereo tape machines you find out what I really mean.
A lot of transistor tape machines will make a sort of 'modulation noise' that is absent on the tube tape machines, and it is transistor recorders that often are used to master CD reissues. So CDs will often have tape hiss that the original LP issues will not, though no fault of either media- its more of a mastering problem.
In the CD world, those with analog master tapes are frequently reissues of older LPs. Older master tapes have degraded with time; its not that the original LPs covered up the hiss, the hiss was often simply not there. If you get a chance to play with a 1/2" format stereo tape machines you find out what I really mean.
A lot of transistor tape machines will make a sort of 'modulation noise' that is absent on the tube tape machines, and it is transistor recorders that often are used to master CD reissues. So CDs will often have tape hiss that the original LP issues will not, though no fault of either media- its more of a mastering problem.